Living in Whittier, Boulder: The Unmapped Preservation Rule
Whittier is not one of Boulder's ten local historic districts, and buyers read that absence as freedom. What applies instead is the citywide demolition review, where enlarging a street-facing window counts as demolition. Unmapped is not a lighter rule. It is a less predictable one.
Whittier and Mapleton Hill share two things that matter to a buyer: the era of the housing stock and the walk to Pearl Street. They sit a street apart, either side of Broadway. Buyers read the two as the same product at different prices, and read the difference as a discount. It isn't one. Mapleton Hill is a designated historic district with a published file you can read before you make an offer. Whittier carries no designation, and almost everyone takes that absence as freedom: fewer rules, fewer hearings, do what you like with your own porch. The truth is stranger, and more expensive. Living in Whittier, Boulder can put you under a citywide preservation rule that nobody drew on a map, and that can turn a front window into a public hearing.
Whittier sits just east of Broadway, beside downtown Boulder, and it is not one of the city's ten local historic districts. The citywide demolition review applies instead, reaching any undesignated building over 50 years old: touching any portion of a street-facing wall can trigger a discretionary hearing and a stay of up to 180 days.
Boulder has ten historic districts, and Whittier is not one of them
Boulder's ten local historic districts are Floral Park and Chautauqua (1978), Mapleton Hill (1982), West Pearl (1994), Chamberlain (1995), Downtown (1999), Hillside (2001), Highland Lawn (2005), and University Place and 16th Street (2006). Whittier is on none of them, despite how often agent pages say otherwise. A district for part of the neighborhood was proposed in 1999 and never reached the city's list.
Read that list twice if you have seen a listing description or a brokerage page call Whittier a historic district, because plenty of them do. That claim is confident, widely repeated, and contradicted by the city's own list. The mistake is also an easy one to make honestly. A district covering a strip of Whittier was proposed in 1999 and written about at the time. It never reached the city's list.
Boulder does carry roughly 200 individually designated landmarks, and between its districts and its individual landmarks the city protects more than 1,300 properties. One of those individual landmarks sits in the middle of the neighborhood. Whittier International Elementary was built in 1882 and is the oldest continuously operating school in Colorado, and the building itself is designated. So Whittier contains protected buildings. Whittier is not a protected place.
The turn this guide rests on is the opposite of what that absence suggests. A missing designation is not a missing preservation power. It changes which power applies, who exercises it, and whether you can read the rules before you commit any money. In Mapleton Hill the district file and its design guidelines are published documents. You can sit down with them and price your remodel against them before you write. Whittier has no file to read, because it has no district. What it has is a citywide ordinance and a board.
How a front window becomes a demolition hearing
Boulder reviews the demolition of any building more than fifty years old that is neither individually landmarked nor inside a historic district. In 2026 that threshold reaches anything built before 1976. The city's own planning record describes Whittier as one of the oldest and most architecturally distinct neighborhoods in Boulder, with a concentration of buildings eligible for landmark designation, and the neighborhood carries no district designation. So the rule that most buyers file under "things that happen to people who buy a house to knock it down" is a rule that reaches ordinary houses here. It turns on one parcel's construction date, though, not on the neighborhood's reputation, so the answer can differ from house to house on the same block. That date is a public record, and it is the first thing to establish.
Now read the trigger, because the trigger is where this bites. The city's definition of Demolition (Historic) is met by removing one or more of the following: half or more of the roof area, measured in plan; half or more of the exterior walls; or any portion of a street-facing wall, which the city states explicitly includes enlarging a window or a door opening, removing an enclosed porch, and removing or concealing the exterior wall finish, such as stucco or siding. Two details in that sentence do a lot of work. "Measured in plan" means the roof as it projects onto a flat horizontal plane, not the sloped surface you would walk on, which makes the threshold easier to cross than it sounds. And the clauses are independent: meeting any one of them is enough, so no clause needs help from another. The definition also carries its own exceptions, which is one more reason to put your actual plan to the city rather than read it off a summary.
The third clause is the one that catches ordinary people. Widening the front window of a pre-war bungalow to get more light into the living room is, on the city's own definition, demolition. So is stripping the stucco off the front of the house, and so is taking off the enclosed porch somebody added to the front of a bungalow decades ago.
Which is worth calibrating immediately, because the rule sounds broader than it lives. None of the three clauses reaches the inside of the house, and two of the three turn on how much of the exterior comes off rather than on which room you are redoing. So a kitchen, a bathroom, a finished basement, a like-for-like window replacement or paint does not come near any of them. Work at the back of the lot usually does not either, but that one is a question of scale rather than of category, because a large rear addition can reach the roof clause or the exterior-wall clause without ever touching the front of the house.
Three kinds of work do come near it. The first is the front elevation: enlarging a front window or door opening, taking off an enclosed porch, re-siding or stripping the stucco off a street-facing wall. One wrinkle there is worth checking before you plan anything, because it changes how much of the house counts. A corner lot has two street-facing walls, so on a corner the elevation that feels like the side of the house may be a front as far as this rule is concerned.
The second is a pop-top, and it gets there by a different clause entirely. Because the three clauses are independent, the roof threshold stands on its own: if your plan takes off half or more of the roof area measured in plan, which a full-width second storey does by definition, you are in the review on that clause alone, whether or not you go near a street-facing wall. A modest rear dormer may not reach it. This is one of the commonest value-add moves on a Boulder bungalow, and it is the one most likely to blindside a buyer who has read only the street-facing-wall clause. The city does not discuss pop-tops in its demolition-review material, so treat this as what the threshold says rather than as a worked example the city has published: the test is area removed, so price it as a question about area.
The third is sheer extent. Half or more of the exterior walls is a clause of its own, so a renovation that takes that much of the shell off is in the review on that basis, wherever on the house the work sits. Like the roof clause, it is a measurement rather than a category, which is why a large rear addition is worth putting to the city even though nothing about it faces the street.
Then there's the schedule, and the city's own fee schedule shows how these cases sort into tiers. The base path is a staff review: $51 for a post-1940 structure, $282 for a pre-1940 primary structure, resolved by city staff or its design review committee in one to three weeks. The $1,504 fee belongs to the other tier, the one that applies when an application is referred on to the Landmarks Board, which adds one to six months. Referral is an escalation, not the default route. It is also the tier the rest of this section is about, because it is where the stay and the designation power live, so read what follows as the exception rather than the ordinary case.
| The question | Inside a designated district | An undesignated Whittier house over 50 years old |
|---|---|---|
| What governs your exterior work | The district designation, with published design guidelines | The citywide demolition-review ordinance. No design guidelines exist |
| What triggers a review | Any exterior alteration, through a Landmark Alteration Certificate | Half or more of the roof area, half or more of the exterior walls, or any portion of a street-facing wall; any one of the three is enough |
| Who decides | Staff for minor work, the Landmarks Design Review Committee for most alterations including additions, and the Landmarks Board for demolition and new construction, all against published design guidelines | City staff first, then the Landmarks Board if the application is referred |
| The worst case | The alteration or the demolition is denied | A stay of up to 180 days, and the board can start a designation, which City Council then decides |
| What you can know in advance | The rules are published, so you can read them before you offer | You describe your plan to the city and wait for an answer |
| What it costs to ask | A different process applies | $51 for a post-1940 structure, $282 for a pre-1940 primary structure, $1,504 if it reaches a board hearing |
During that stay, the Landmarks Board can initiate landmark designation on the house. That is the part almost nobody prices in. Not a house someone nominated, not a house already on a list. The house you bought partly because it was the one in the neighborhood with no rules attached.
None of that is hypothetical. The clearest recent instance is not in Whittier at all. In February 2026 an application to demolish a 1920s Craftsman bungalow at 990 Arapahoe Avenue, a house nobody had ever designated and not a Whittier address, went to the Landmarks Board. On February 26 the board voted 4 to 1 to initiate the designation process, which protects the house from demolition while a full designation hearing proceeds, and City Council makes the final determination. Read it with its context attached, because the context is doing work: that was an institutional application, filed as part of a senior-housing redevelopment rather than by an owner remodeling a house, which is a good part of why it drew a board referral rather than a counter-level answer. That it made the newspaper at all is a fair signal of how uncommon the outcome is. It belongs in a Whittier guide for one reason: it shows the citywide rule reaching an ordinary undesignated pre-war Boulder house.
The rule is usually told as a horror story, and the other half of it gets lost. The stay is a delay, not a veto. If the Landmarks Board does not initiate designation before the stay runs out, the demolition is approved, and that approval is good for a year. Inside a designated district, demolition of a contributing house can be refused outright. Outside a district, the review itself cannot refuse a demolition — it can only delay one. What it can do instead is start a designation, and that, if City Council confirms it, is what protects the house. The same missing district also means nobody reviews your paint color or a like-for-like window replacement when the work leaves the street-facing walls alone, which a Mapleton Hill owner cannot say. Whittier's regime is slower and less certain than a district's. It is not stricter.
One line for anyone who already owns here, because this cuts your way at sale: a buyer who understands the review will price the uncertainty into their offer, and a seller who can hand over the permit record and a straight account of what has already been reviewed takes that discount off the table.
What changed next door in 2025
The 2025 change landed on your neighbor's parcel rather than in your own file. Parts of Whittier are zoned RMX-1, Boulder's residential mixed district, and on February 6, 2025 the city council adopted Ordinance 8666 on a 7 to 2 vote, with the changes effective the following month. It reduced the minimum lot area required per dwelling unit in RMX-1, which is the number that decides whether an existing single-family house may legally be converted into two or three units.
That reduction is not blanket, though, and the conditions matter more than the headline does. The city's pre-adoption Planning Board record enumerates four cases it applies to: lots that already carry at least a stated existing density per dwelling unit; a new building added to a property that already has a principal building; a new building on a vacant lot, as long as the work does not require deconstructing a building potentially eligible for landmark designation; and the alteration of an existing building to add units, as long as the majority of the building is kept, or the work goes through a landmark alteration certificate. That same record frames the package as standards meant to protect historic housing stock. Note what that source is, though, because it bounds what we can tell you: it is the pre-adoption record rather than the adopted ordinance, and the adopted code text was not publicly readable when this guide was written. What governs a specific lot is the adopted code, so confirm it with the city for the parcel you care about.
Keep the scale of that honest, because the reform gets overstated in both directions. Height, massing and setbacks were left alone. A conversion has to fit inside the building envelope that is already standing, so the realistic outcome is an older house that becomes a duplex or triplex behind the same walls, not a new building looming over the one next to it. The low-density districts got a different mechanism entirely. In RR-1, RR-2 and RL-1, which cover Newlands, Old North Boulder and much of South Boulder, a duplex became permissible within 350 feet of a bus line regardless of lot size.
Put the zoning beside the missing district and you can see what is fixed here and what isn't. What a buyer pays a premium for in Whittier is the built street: the porches, the scale, the age of the block. Nothing guarantees that street stays as it is, in either direction. A neighboring house can come down once a stay expires, and a neighboring house can lawfully become two or three units inside its existing walls. Neither outcome is governed by a district file you could have read before you bought, because there is no district file. One is a discretionary decision by a board. The other is a right attached to the lot.
The same zoning cuts your way as well, and that half gets buried when the conversation is only ever about the neighbors. Go back to the trigger: it is a street-facing test. So the work that avoids it is the work at the back of the lot. A rear addition, an alley or garage conversion, or a detached accessory dwelling unit all sit behind the house, away from any street-facing wall, which makes the back of the lot the trigger-free place to add space and value in Whittier. Two conditions on that. Boulder's ADU rules carry their own size, setback and envelope limits, which the Newlands guide sets out rather than this one repeating them. And eligibility is a per-parcel question: RMX-1 and the low-density districts do not behave the same way here, so the answer follows the lot's zoning district, not the neighborhood's name.
Verify this per parcel
Zoning is a property right attached to a lot, so check the zoning district for the house you are buying and for the lots on either side of it and behind it. Whittier is not uniformly RMX-1, and the difference between an RMX-1 lot and a low-density one changes what may lawfully happen next door for as long as you own the house.
So what does an in-band budget actually buy here?
Position is the product. Walk Score rates Whittier 86 and ranks it the third most walkable neighborhood in Boulder, which is the measurable version of what people mean when they say you can walk from here to dinner and to the office. The houses are old and the lots are small, so the price isn't paying for square footage. It's paying for where the square footage sits.
Where Whittier stops isn't settled, which is worth saying before any number gets attached to the name. Published descriptions run east from Broadway to 26th Street or to 28th, and south from Alpine or Bluff down to Canyon. This guide describes the neighborhood as an approximation because the sources do.
Why a Whittier price is really two prices
Whittier's for-sale stock is not one product. Detached houses, condominiums, townhouses and small multi-family buildings sit on the same blocks, because the zoning permits them there. Any single Whittier median therefore averages across property types, and citywide those types are more than double apart: in June 2026 the median single-family home in Boulder sold for $1,266,912, while the median townhouse or condominium sold for $580,000. A blended figure lands between two markets and describes neither buyer.
Two further reasons we won't publish one. CAR and LBAR publish town-level market updates and there is no Whittier sub-area report, so any neighborhood figure is somebody's private cut. And because the boundaries above are unsettled, two published "Whittier medians" may not even cover the same ground.
What we anchor to instead: across sales year to date through June 2026, the median single-family home in the city of Boulder sold for $1,295,000. For a real number on a real house, the honest instrument is a comparative market analysis on that specific property, read against the wider Boulder market.
For a buyer working in the $800,000 to $1.5 million band, the practical consequence is a question about product rather than price. The band straddles the middle of Boulder's single-family market, its ceiling above that median and its floor well below it, and here the same budget reaches different things depending on whether it lands on a detached house, an attached one or a unit in a small building. That is a decision to make on the property in front of you, with comparable sales, not on a neighborhood average.
How to price the uncertainty before you offer
The checks below exist because the regime here is unmapped. In a designated district your diligence is largely reading: the file, the guidelines, the prior approvals. Here your diligence is asking, and the asking has a clock on it.
Two things make that clock workable. Colorado's Contract to Buy and Sell runs on dated deadlines, and the two that matter here are the Inspection Objection Deadline and the Inspection Termination Deadline, the second of which lets you walk if the answer does not arrive or does not suit. But treat the demolition question as a pre-offer one wherever you can, because a referral to the Landmarks Board runs on months and will outrun any inspection window you are likely to negotiate. And the pace of this market gives you room to ask first: across the city, single-family homes were taking about 68 days to go under contract in June 2026, on 4.5 months of supply. Both of those are citywide, all-price-band figures rather than a read on any one house, so treat them as the reason the calendar is usually workable, not as a promise that a particular listing will wait for you.
Pull the age and permit record, then describe your actual plan to the city
Get the parcel's construction date and its permit history, then put the specific work you are picturing in front of the city and ask whether it meets the Demolition (Historic) definition. The permit history is the half buyers skip, and it is the likelier problem of the two. Front elevations on old houses get changed: a porch enclosed or opened up, siding swapped, a front window widened. Where that work was done without a permit, the rule never fired at the time, because nobody applied. It can fire on you instead, at your first permit application, when the city has the parcel record on one side and the elevation actually standing there on the other. Ask about it before you write an offer, and if the answer is messy, it is a negotiation item rather than a surprise. Either way, ask early: staff can answer a simple question in one to three weeks, but a referral to the Landmarks Board adds one to six months, which is longer than your inspection deadline will wait.
Confirm the zoning district, for this lot and its neighbors
RMX-1 and the low-density districts now behave differently after Ordinance 8666, and Whittier is mixed. What matters is not only what you may do, but what may lawfully appear beside you inside an existing footprint.
Read the parking permit terms as they actually stand
Whittier is one of twelve residential neighborhood parking permit zones in Boulder. On Whittier's terms, parking without a permit is capped at three hours from 8 a.m. to 8 p.m. Monday through Friday, and a permit is required from 8 p.m. to midnight on Friday and Saturday. As the city's terms stand now, residential permits are issued one per licensed driver, a change that took effect at the start of 2026, and Flex Permits are capped at two per household per year rather than two per driver. On a block with no driveway, that is your household's parking plan. So establish two things about the specific parcel. Whether it has any off-street parking at all, including a garage or pad reached from a rear alley, which is what decides whether these terms bind your household or are merely background. And what a permit actually buys you: it is permission to park in the zone, not a space reserved for you, so walk the block on a weekday evening before you decide. Read the current terms from the city rather than a description of them.
Check the parcel against the city's floodplain maps, and distrust 2013
The 2013 flood did not hit Boulder's drainages equally, which is exactly why "it was fine in 2013" is such an unreliable answer about any particular house. On Goose Creek, where the city is running a Goose Creek and Twomile Canyon Creek flood mitigation project, the city records that this reach did not flood significantly in 2013, while a 100-year event there would carry roughly four times the flow that moves through Boulder Creek at peak spring runoff. 16 percent of the city sits in the 100-year floodplain. Floodplain status is a fact about a parcel rather than a neighborhood, so check the address against the city's maps of floodplains.
Verify the school assignment by address, because it just moved
Whittier is in Boulder Valley School District, which made its first major attendance-boundary changes in more than forty years for the 2026-27 school year now under way. A small disconnected area previously assigned to Creekside moved to Whittier Elementary, and the Casey Middle boundary expanded to take in the whole Whittier Elementary attendance area, which had been split between Casey and Manhattan. Boulder High continues as the assigned high school. Because the assignments changed this year, confirm any specific address on the district's school finder.
Four things this guide deliberately does not re-derive, because a sibling guide already does each one properly. What a century-old house asks of its systems, from knob-and-tube wiring to a clay sewer lateral, is in the Mapleton Hill guide. What you may actually build on a Boulder lot once you are past the demolition question, meaning floor-area ratio, bulk plane and solar shadow, is in the Newlands guide. If you are the buyer who genuinely intends to take a house down and rebuild, the economics and the approval path are in the North Boulder guide. And the inspection load on a pre-war house is in our Boulder County home inspection guide.
The buyer Whittier actually suits
Whittier fits your situation if
- You want the walk to downtown more than the square footage, and you plan to own the house roughly as it stands.
- The changes you have in mind are interior, or exterior work that leaves the street-facing walls alone and stops short of taking off half the roof or half the exterior walls.
- You are comfortable owning on a block that will keep changing, both by demolition and by conversion inside existing footprints.
- Your parking need fits the permit zone's terms rather than requiring a driveway.
Look elsewhere if
- Your plan needs a front-facing addition, enlarged street-facing windows, new siding or stucco across the front, or a pop-top that takes off half or more of the roof, on a fixed timeline.
- You want a streetscape that is guaranteed in writing, which is a designated district and a different guide.
- You are underwriting off a portal's neighborhood median rather than comparable sales on the actual property.
- A discretionary review with a range of outcomes is a risk you would rather not carry at all.
Frequently asked
Is Whittier a historic district?+
No. Boulder has ten local historic districts, and Whittier is not among them: Floral Park and Chautauqua (1978), Mapleton Hill (1982), West Pearl (1994), Chamberlain (1995), Downtown (1999), Hillside (2001), Highland Lawn (2005), and University Place and 16th Street (2006). The claim that Whittier is a designated district turns up on a lot of agent and brokerage pages, and it is wrong. A district covering part of the neighborhood was proposed in 1999 and never reached the city's designated list. Individual buildings inside Whittier are landmarked, including Whittier International Elementary, but the neighborhood itself carries no district designation.
Can I remodel or add on to a Whittier house?+
Interior work, generally yes. Work at the back of the lot usually is too, because it does not touch a street-facing wall, but scale decides that one rather than location: a rear addition or a pop-top large enough to take off half or more of the roof area, or half or more of the exterior walls, meets the definition on those clauses alone. Exterior work at the front is where the surprise lives. The City of Boulder's citywide demolition review covers any building more than fifty years old, which in 2026 means built before 1976, that is neither individually landmarked nor inside a historic district. The city describes Whittier as one of its oldest neighborhoods, so start by confirming the construction date for the specific parcel. The Demolition (Historic) definition is met by removing any one of the following: half or more of the roof area measured in plan, half or more of the exterior walls, or any portion of a street-facing wall, which the city states includes enlarging a window or door opening, removing an enclosed porch, and removing or concealing the exterior wall finish such as stucco or siding. So a front-facing addition, a widened front window or new siding across the front can require a demolition application, and so can a full-width pop-top, which meets the roof clause on its own. Staff can resolve an application in one to three weeks, or refer it to the Landmarks Board, adding one to six months. Ask the city about your specific plan before you are under contract.
Can my neighbor build a duplex next door?+
In the parts of Whittier zoned RMX-1, converting an existing single-family house into two or three units became easier. Ordinance 8666, adopted February 6, 2025 on a 7 to 2 council vote and effective the following month, reduced the minimum lot area required per dwelling unit in RMX-1. What it did not change is height, massing or setbacks, so a conversion has to fit inside the building footprint that is already there. This is a fact about what a parcel is permitted to hold, not a prediction about any particular property. Confirm the zoning district for the lot you are buying and for the lots around it.
What is the median home price in Whittier?+
We do not publish one, and the reason is specific to Whittier. Its for-sale stock is not one product: detached houses, condominiums, townhouses and small multi-family buildings sit on the same blocks, because the zoning allows them there. Citywide those types are more than double apart, with the median single-family home selling for $1,266,912 in June 2026 against $580,000 for the median townhouse or condominium in the same month, so a blended Whittier figure would land between two markets and describe neither buyer. There is also no CAR or LBAR sub-area report for Whittier, and published descriptions of the neighborhood's boundaries disagree. We anchor to the city-of-Boulder single-family median, which was $1,295,000 for sales year to date through June 2026, and price a specific house with a comparable-sales pull.
What schools serve Whittier, and did the boundary change?+
Whittier is in Boulder Valley School District, and the assignment has just changed. BVSD made its first major attendance-boundary changes in more than forty years for the 2026-27 school year, which is now under way. A small disconnected area previously assigned to Creekside moved to Whittier Elementary, and the Casey Middle boundary expanded to cover the whole Whittier Elementary attendance area, which had been split between Casey and Manhattan. Boulder High continues as the assigned high school. Because the assignments changed this year, confirm the exact address on the district's school finder rather than relying on the neighborhood name.
The bottom line
Whittier is a genuinely good address sold on a false premise. The premise is that no historic district means fewer rules. What it actually means is that the rule is citywide, discretionary, and unwritten for your particular house until you ask. That is not a reason to avoid the neighborhood, and the same absence buys you freedoms a Mapleton Hill owner does not have. It is a reason to ask the question while you can still walk away, because the answer can take longer than your contract's deadlines allow.
The city's calendar is the one part of this you cannot compress. Staff can settle a straightforward demolition question in a week or three, a referral to the Landmarks Board runs on months, and no contract deadline waits for either. So the asking comes first. Describe the work you actually intend to do, put it to the city, and let the answer set what the house is worth to you.
That is a question we will put for you on a Whittier house you are looking at, along with the parcel's age, its zoning district and its permit record, and where the reply is likely to land: before your own deadlines, or after them. For how Whittier sits among Boulder's other in-band options, the Boulder area guide covers the rest of the map.
True North Boulder is a real-estate team with eXp Realty.
Sources & data notes
- Historic districts: City of Boulder, what is a historic district (the ten local districts and their designation years) and landmarks and historic districts (roughly 200 individual landmarks; more than 1,300 designated properties). Whittier appears on neither list, and the city's own list is what this guide's central assertion rests on.
- The 1999 proposed Whittier district is reported by BizWest, "Historic preservation efforts more powerful under local designations", September 1, 1999, which describes a proposed district running east of Broadway to 22nd Street; the article is paywalled. It is cited only for the proposal. That no such district exists today is established by the city's designated list above, not by this source.
- Demolition review: City of Boulder, historic preservation demolition review for buildings older than 50 years (the Demolition (Historic) trigger definition, the 180-day stay, approval valid one year, review timelines, and the $51 / $282 / $1,504 fee schedule). On the threshold wording: the ordinance language, quoted on the city's historic preservation FAQ, defines demolition as the act or process which removes "one or more of the following: Fifty percent or more of the roof area… Fifty percent or more of the exterior walls… Any exterior wall facing a public street." The city's summary page renders this as "more than 50%." The two diverge at exactly 50 percent, and this guide follows the ordinance, which is the controlling text and the broader of the two. "One or more" is why the roof threshold stands independently of the street-facing-wall clause. The definition also carries an exceptions provision that was not readable in the adopted code at the time of writing, so this guide does not present the trigger list as exhaustive.
- Who reviews what on the designated side (the comparison table): City of Boulder, Landmarks Design Review Committee (the LDRC is two Landmarks Board members and a historic preservation planner, and "reviews most requests for alterations to properties that are individually landmarked or located within a historic district, including proposed additions, new accessory buildings less than 340 square feet in size, and alterations to porches, windows, and doors"; the Landmarks Board takes demolition, larger new free-standing construction and LDRC referrals), the Landmark Alteration Certificate application and review process, and the published guidelines for individual landmarks and historic districts.
- 990 Arapahoe Avenue, a 1920s Craftsman bungalow and not a Whittier address, cited only as evidence that the citywide rule reaches undesignated pre-war houses: Boulder Reporting Lab, Landmarks Board votes to protect century-old home, February 26, 2026 (the board voted 4 to 1 to initiate designation; City Council makes the final determination).
- Zoning: Ordinance 8666 reduced the RMX-1 minimum lot area per dwelling unit while leaving height, massing and setbacks unchanged; the low-density districts (RR-1, RR-2 and RL-1) instead permit a duplex within 350 feet of a bus line regardless of lot size. The ordinance number and the RMX-1 conversion mechanism appear in the City of Boulder's Planning Board agenda item 5B of November 19, 2024, which is the pre-adoption record. The adoption on February 6, 2025 on a 7 to 2 council vote, effective the following month, is reported by Boulder Reporting Lab, January 5, 2025 and February 6, 2025. The specific minimum-lot-area figure is deliberately not published here: the adopted code text was not readable at the time of writing, so the change is described by mechanism rather than by number.
- Whittier's age and character: the same city Planning Board document, page 12, describes the RMX-1 district as covering "some of the oldest and most architecturally distinct neighborhoods in Boulder, including Whittier," citing "the concentration of eligible buildings and a high level of integrity of the neighborhood's distinct historic character." This guide deliberately states no proportion of houses by age. The demolition rule turns on whether one specific building is over 50 years old, which in 2026 means built before 1976, so the parcel's construction date is the thing to confirm.
- Price and pace context: CAR/LBAR Local Market Update, Boulder (IRES data), single-family, median of sold listings, city of Boulder: $1,266,912 for June 2026 and $1,295,000 year to date through June 2026; townhouse/condominium median $580,000, June 2026. Days on market until sale, single-family, June 2026: 68 (an average, measured from list to accepted offer, not to closing). Months supply of inventory: 4.5. June 2026 Boulder housing statistics. The days-on-market and months-supply figures are city-wide and span every price band, so they are cited here only as context for how much calendar a buyer generally has, and deliberately not converted into transaction-level advice for the $800,000 to $1.5 million band, which is a different and thinner slice of the same market. No Whittier sub-area report exists, so a neighborhood median is refused (market-data-sourcing §5).
- Walkability: Walk Score, Whittier (score 86, third most walkable Boulder neighborhood), accessed August 2026.
- Parking: City of Boulder, neighborhood parking permits (Whittier is one of twelve residential zones; three-hour limit without a permit 8 a.m. to 8 p.m. Monday to Friday; permit required 8 p.m. to midnight Friday and Saturday; one residential permit per licensed driver as of January 1, 2026, and Flex Permits "up to two per household per year", which is a household allowance and not a per-driver one). Annual cost is not stated on the city's page and is therefore not quoted here, and permit terms change, so the city's page governs rather than this description of it. On "a permit is permission, not a reserved space": the city states in terms that "leasing a permit does not guarantee you a space on your assigned block number," but publishes that sentence under the commuter permit terms. It is cited here for what it is. The residential terms grant permission to park in the zone and allocate no particular space, and this guide asserts nothing further about residential permits than that.
- Flood: City of Boulder, Goose Creek and Twomile Canyon Creek flood mitigation (this reach did not flood significantly in 2013; a 100-year event would carry roughly four times the flow of Boulder Creek at peak spring runoff). The 16 percent of the city in the 100-year floodplain is via Boulder Reporting Lab, Boulder's flood risk a decade after 2013, September 11, 2023. This guide asserts no drainage for the neighborhood, because the city's project documents describe reaches rather than neighborhood boundaries; floodplain status is a per-parcel fact, and the city publishes the maps of floodplains.
- Schools: Boulder Valley School District attendance-area boundary changes for 2026-27 (Whittier/Creekside and Casey/Manhattan), plus the BVSD school finder. Whittier International Elementary, built 1882, the oldest continuously operating school in Colorado, is itself a designated landmark.
- Neighborhood boundaries are described as an approximation because published sources disagree (east to 26th or 28th; north edge given as Alpine or Bluff).
- As of August 2026. Verify the demolition-review answer for your specific plan, the zoning district for the parcel and its neighbors, floodplain status, parking permit terms and school assignment for any specific address.
