Boulder, Colorado
In Boulder the owner, value and sale history of every account is free to download from the Boulder County Assessor, refreshed nightly; the City holds about 5,100 acres of the parcelled land inside its limits.
11 buildings · 11 with an owner established · 5 sources · 10 tier A · 1 tier B · prepared 2026-11-01
Can you find out who owns it?
Colorado records title by deed with the county Clerk and Recorder; Boulder lies in Boulder County. The County Assessor publishes its whole database as free CSV downloads, refreshed at 4 a.m. daily: owner name and mailing address, land, buildings, 2026 actual and assessed values and every recorded sale with its price, for every account in the county, with no account or licence step. Prices reach the record because a State documentary fee of $0.01 per $100 is paid on recording any deed over $500.
Is ownership public?An open dataset names the owner
Cost of one title searchOwner of record free (Boulder County Assessor property search and data download, no account). Recording fee $43 per document; State documentary fee $0.01 per $100 of consideration over $500; certified copy $1, paper copies $0.25 per page (Boulder County Clerk and Recorder, fees effective 1 July 2025)
Bulk ownership dataBoulder County Assessor 'Data Download': Owner_Address, Account_Parcels, Land, Buildings, Values, Sales, Permits, Tax areas and Business Personal Property CSVs for every account in the county, free, refreshed daily at 4 a.m. (assessor.boco.solutions/ASR_PublicDataFiles). A general disclaimer only; no licence stated
Sale pricesEvery sale, with its address
1
The marquee buildings
The towers that set the tone of the core, and who holds them. A price is the price a document states, on the date it states — not an estimate of what the building is worth now.
| Building | Use | Owner | Owner type | Last price paid |
|---|---|---|---|---|
| Boulder Municipal Building (City Hall) 1777 Broadway 7.6 acres (parcel 146330357002, County GIS) |
Civic | City of Boulder The Assessor's roll names 'City of Boulder' as owner of account R0515476 at 1777 Broadway, exempt, legal description 'Blks 11 & 12 & track adjacent to Blk 11 on the west - Boulder O T ... & vac Riverside St & 10th St & 11th St', 2026 actual value $33,051,231. No sale is recorded with a price. |
Government | —A |
| Boulder County Courthouse 1325 Pearl St 2.1 acres (parcel 146330324001) |
Civic | County of Boulder The roll names 'County of Boulder' as owner of account R0085095 at 1325 Pearl St, exempt, 2026 actual value $49,271,001. The Assessor's own Boulder office is listed at the same address, 2nd floor (Assessor contact block on the County site). |
Government | —A |
| University of Colorado Boulder main campus (incl. Folsom Field) 1950 Colorado Ave and adjoining accounts Main-campus account 230 acres; CU-named accounts in the City about 607 acres in all |
Institutional | State of Colorado The roll records the 'Main Campus 31-1N-70 less Tr 156C', 230.15 acres at 1950 Colorado Ave, in the name 'State of Colorado' (account R0085173, exempt, $55.3M). Other campus accounts stand in the University's own name: 'University of Colorado' at 2250 Willard Loop Dr ('C U Dormitories Hallet Hall', $598.3M, the highest 2026 actual value of any account in the City) and an unaddressed 30th St account (65.7 acres, $297.9M); 'Regents of the University of Colorado' holds 171.9 acres off Arapahoe Ave and 'University of Colorado Regents' the 4001 Discovery Dr research park account (30 acres, $175.1M). |
Government | —A |
| Twenty Ninth Street (regional shopping centre) 1960 29th St 685,000 sq ft total GLA, 543,000 sq ft mall and freestanding (Macerich 10-K); 17.7 + 2.6 acres on the roll |
Retail | Macerich Twenty Ninth Street LLC 51% (Macerich joint venture) The roll names 'Macerich Twenty Ninth Street LLC' (mailed to Santa Monica, CA) as owner of 'Lots 1-3 & 6-7 & all imps lots 8-12 Twenty Ninth Street', 17.73 acres, 2026 actual value $217.0M, plus outlots. Macerich's 2025 10-K lists Twenty Ninth Street, Boulder, as an unconsolidated joint venture at 51%, anchor Home Depot, 95.2% leased, and states: 'Effective February 6, 2026, the $150,000 ($76,500 at the Company's pro rata share) loan on Twenty Ninth Street went into default. The Company's joint venture is in negotiations with the lender.' (dollars in thousands). |
REIT | —B |
| St Julien Hotel & Spa 900 Walnut St |
Hotel | St Julien Partners LLC A commercial condominium. The roll names 'St Julien Partners LLC' as holder of 'Units H & HG Ninth and Canyon Hotel and Parking Condominium' (account R0608066, 2026 actual value $93.8M) and of a possessory interest in a 234 sq ft patio in the right of way along Walnut St. Unit G of the same condominium (the parking) stands in the name 'City of Boulder Central Area', exempt. No priced sale of the hotel units is in the Assessor's sales file. |
Private company | —A |
| Hotel Boulderado 2115 13th St (and annex at 2190 Broadway / 1230 Pine St) |
Hotel | GBCO Owner LLC The roll names 'GBCO Owner LLC', mailed to 429 Chestnut St (Nashville, TN), as owner of six accounts: the hotel (2115 13th St, 'Lot 11 less W 7 ft & Lot 12 Blk 120 Boulder O T', $21.1M), the Boulderado Annex lots at 2190 Broadway and 1230 Pine St, and lots at 2150 13th St and 1312 Pine St. The Assessor's sales file records deed 4081657 of 22 Mar 2025 at $102,000,000 against five of them. No filing naming the LLC's members was opened. |
Private company | $102,000,000 2025-03-22 Special warranty deed 4081657 covering five GBCO Owner accounts (hotel and annex); the Assessor codes the sale 'U' (not used as a qualified sale). A |
| Foothills Hospital (Boulder Community Health) 4747 Arapahoe Ave 29.3 acres, plus a 30.5-acre adjoining account |
Institutional | Boulder Community Health The roll names 'Boulder Community Health' as owner of account R0602022 at 4747 Arapahoe Ave, part exempt, 2026 actual value $169.1M, and of an adjoining exempt 30.5-acre account on Arapahoe Ave. In the City it holds 17 accounts (62.5 acres, $220.7M) and, as 'Community Hospital Association', 7 more ($124.0M). |
Institution | —A |
| Google Boulder campus 2930 Pearl St and 3000 Pearl Pkwy (Unit O100) |
Office | Google LLC The roll names 'Google Inc' (mailed to Mountain View, CA) as owner of 'Lot 1A Pearl Place', 2930 Pearl St, 4.45 acres, 2026 actual value $104.4M, and 'Google LLC' as holder of commercial condominium 'Unit O100 Reve' at 3000 Pearl Pkwy ($55.6M), bought by deed 3915154 of 10 Sep 2021 at $97.8M. The other Reve units are held by 'Reve VQOF I SPE LLC et al' (apartments), recorded at $151.25M on 25 Feb 2021. 'Public-company' rests on the Google name; no Alphabet filing was opened. |
Public company | $97,800,000 2021-09-10 Special warranty deed 3915154 for Unit O100 of the Reve condominium, 3000 Pearl Pkwy. A |
| Boulder Municipal Airport 3300 Airport Rd 118.3 acres (account R0604168) plus 19.3 acres at 3158 Airport Rd |
Civic | City of Boulder The roll names 'City of Boulder' as owner of 'Lot 2C Airport South Replat C' at 3300 Airport Rd (exempt, $38.5M) and of hangar improvements; aviation businesses (Journeys Aviation Inc, Specialty Flight Training Inc, Scientific Aviation Inc) hold possessory interests in leased hangars and offices on it. Boulder County holds the neighbouring 21.8-acre account at 3180 Airport Rd ($78.4M). |
Government | —A |
| Former IBM campus, Gunbarrel 6300 and 6301 Diagonal Hwy 1,377.8 + 479.5 acres (County GIS acreage) |
Office | Kyndryl Inc The roll names 'Kyndryl Inc', mailed to New York, as owner of the two accounts at 6300 and 6301 Diagonal Hwy (account type 'AG_MIXED', 2026 actual values $71.9M and $19.7M), legal description of the larger 'SW 1/4 35-2N-70 & W1/2 2-1N-70 346.92 AC M/L'. They passed by deed 03915919 of 31 Aug 2021 for $10. The GIS acreage (1,857 acres) is far above the 346.92 acres in the legal description, so the holding's true size is uncertain. Kyndryl's FY2026 10-K was opened and does not name Boulder. |
Public company | —A |
| NCAR Mesa Laboratory and NIST/NOAA Boulder campus 1850 Table Mesa Dr; 325 Broadway 268.7 + 277.3 acres (Table Mesa); 205.3 acres (325 Broadway) |
Institutional | U S Government The roll names 'U S Government' (mailed to Washington, DC) as owner of the two accounts at 1850 Table Mesa Dr, exempt, and of 205.3 acres at 325 Broadway ($115.6M). The University Corporation for Atmospheric Research holds its own buildings at 3450 Mitchell Ln ($115.4M), 3300 Mitchell Ln and 3090 Center Green Dr. Which federal agency occupies each site is not stated on the roll. |
Government | —A |
2
The core land
The most valuable ground in the city, and what the public record says about it.
The most valuable ground in Boulder is the University and the City's own utility land; the most valuable private parcel is the Twenty Ninth Street shopping centre. All figures are 2026 actual values from the Assessor's Values file of 31 Oct 2026.
Highest-valued account$598.3M
University of Colorado, 2250 Willard Loop Dr ('C U Dormitories Hallet Hall'), exempt. Assessor Values file, tax year 2026.
Highest-valued taxable account$217.0M
Macerich Twenty Ninth Street LLC, 1960 29th St, 17.73 acres. Assessor Values file, tax year 2026.
All accounts in the City$57.2B
35,643 active accounts in the City of Boulder tax areas; residential $30.1B, exempt $8.3B, commercial $6.5B, residential condominium $5.1B, apartment $4.5B. Assessor files of 31 Oct 2026.
Downtown land benchmark$287 per sq ft of land (median); $663 highest
Land actual value per GIS square foot for the 74 commercial parcels over 0.1 acre on the 900–1900 blocks of Pearl, Walnut and Spruce Sts; the highest is Jared Investment Company's 1445 Pearl St. This research's calculation from the Values and Land files, tax year 2026.
3
Who owns the town
At this scale the significant owner is rarely a trust or a fund: it is one or two local holding companies, a family in its second or third generation, and often the land around the town rather than the buildings in it.
Parcels in the 54 tax areas that levy the City of Boulder mill cover about 28,500 acres on the County's GIS acreage, each parcel counted once. The City of Boulder holds about 5,120 acres of that in its own name, 18%, most of it open space, water and utility land inside the limits. Kyndryl's former IBM site in Gunbarrel is the largest private holding by mapped area, then the federal laboratories, the University and the State. Figures are this research's sums from the Assessor's files of 31 Oct 2026; holdings of private individuals are left out.
| Name | Type | Holdings in the City, Oct 2026 |
|---|---|---|
| City of Boulder Mostly 'City of Boulder' (493 accounts), plus 'City of Boulder et al', 'City of Boulder The', 'City of Boulder Central Area' (downtown parking) and single accounts for housing and 'Real Estate & Open Space'. Its highest-valued account is the 'New Water Treatment Plant 63rd & Diagonal' ($463.5M). Open space outside the City limits is not counted here. |
Government | 511 accounts, about 5,120 acres, 2026 actual value $2.89BA |
| Kyndryl Inc The former IBM campus at 6300 and 6301 Diagonal Hwy, transferred by deed 03915919 on 31 Aug 2021 for $10; the GIS polygons and the legal description disagree, so the acreage is uncertain. |
Public company | 2 accounts, about 1,860 acres by GIS (346.92 acres in the larger account's legal description)A |
| U S Government (federal laboratories, post offices) 'U S Government' at 1850 Table Mesa Dr (two accounts, 546 acres), 325 Broadway (205 acres) and Deer Valley Rd (40.5 acres), plus the 15th St post office and a USPS account at 2935 55th St. |
Government | 7 accounts, about 800 acres, $222MA |
| University of Colorado (Regents, University, Foundation) 'Regents of the University of Colorado' in several spellings (44 accounts), 'University of Colorado' (3, incl. the $598.3M Hallett Hall dormitory account), 'University of Colorado Regents' (Discovery Dr research park) and the University of Colorado Foundation Inc (2, a private foundation). The 230-acre main campus account is in the State's name and counted below. |
Government | 54 accounts, about 607 acres, $1.73BA |
| State of Colorado Includes the 230.15-acre CU 'Main Campus' account at 1950 Colorado Ave, 59.4 acres at 975 Regent Dr ($99.5M) and 109.5 acres on N Foothills Hwy. |
Government | 14 accounts, about 421 acres, $266MA |
| Boulder Valley School District RE-2 Recorded as 'Boulder Valley School District RE-2J', 'RE-2', 'No RE-2' and similar. |
Government | 41 accounts in six spellings, about 302 acres, $500MA |
| BNSF Railway Company and Union Pacific Land Res Corp BNSF Railway Company 9 accounts; Union Pacific Land Res Corp 2. Railway accounts carry no value on the County roll (state-assessed). |
Public company | 11 accounts, about 89 acresA |
| Housing Authority of the City of Boulder (Boulder Housing Partners) and its partnerships 84 accounts in the Housing Authority's own name (in ten spellings, 69 as 'Housing Authority of the City of Boulder') plus 40 accounts of 12 LLLPs mailed to its 4800 Broadway address, among them Vistoso Community LLLP (15 accounts), 30Pearl LLLP (80 units, built 2023), Hawthorn Court LLLP (96 units, 2025) and Mount Calvary LLLP (60 units). Tying the LLLPs to the Authority rests on the shared mailing address only. |
Government | 124 accounts, about 81 acres, $421MB |
| Boulder Community Health / Community Hospital Association Foothills Hospital campus at 4747 Arapahoe Ave and medical offices on Riverbend Rd and 48th St. |
Institution | 24 accounts, about 66 acres, $345MA |
| County of Boulder 'County of Boulder' (20) and 'Boulder County' (4): the courthouse at 1325 Pearl St, the 3180 Airport Rd complex ($78.4M) and offices. Unrelated bodies with 'Boulder County' in their names are excluded. |
Government | 24 accounts, about 65 acres, $448MA |
| Public Service Co of Colorado (Xcel Energy) Recorded as 'Public Service Co of Colorado - Xcel'; utility property is state-assessed, so no County value is shown. |
Public company | 18 accounts, about 18 acresA |
5
Who builds the houses
New-home building in this market: the volume, and the firms behind it. Ownership of a builder matters as much as its volume — a private-equity platform and a family firm behave differently.
Boulder builds little new housing and almost none of it on greenfield land: the Census Bureau Building Permits Survey (source s5) counts 336 units permitted in the City in 2025 (31 single-family, 2 in a duplex, 303 in three 5+-unit buildings) and 406 in 2024. Volume homebuilders are absent from the roll's new-construction accounts; what is built is apartments, infill condominiums, a few single-family lots and Boulder Housing Partners' affordable LLLPs. The firms below are the roll's owners of accounts with buildings dated 2023–2026; they are owners of record, not necessarily the builders.
| Name | Type | Accounts / units with 2023–26 buildings |
|---|---|---|
| The Standard at Boulder LLC Mailed to 315 Oconee St, Athens, GA; 1345 28th St. Its 303 units match the Census's three 5+-unit buildings permitted in 2025 only in number; no permit record was opened to tie them. |
Private company | 1 account, 303 units (built 2025)A |
| Housing Authority of the City of Boulder partnerships (30Pearl, Hawthorn Court, Mount Calvary LLLPs) 30Pearl LLLP 80 units (2023), Hawthorn Court LLLP 96 units (2025), Mount Calvary LLLP 60 units (2023), all mailed to 4800 Broadway, the Housing Authority's address. |
Government | 236 units in three buildings (2023–2025)B |
| 30 Pearl Q3 OZ LLC Market-rate multifamily beside the 30Pearl affordable building at Boulder Junction. |
Private company | 3 accounts, 83 units (2023)A |
| 3303 Broadway LLC New condominium units at 3303 Broadway, mailed to a Richmond PO box. |
Private company | 12 condominium accounts (2025)A |
| KC Broadway LLC Mailed to 5291 E Yale Ave, Denver; lots around 1120 Violet Ave. |
Private company | 17 accounts, 11 with single-family buildings dated 2025A |
6
Commercial landlords
The commercial side, counted separately from housing: who holds the office, retail and industrial floor area.
Boulder's commercial ground is held mostly by single-asset LLCs, many of them mailed out of state. The largest groups by 2026 actual value of commercial, industrial, mixed-use and apartment accounts are below. Parents are named only where a filing says so; elsewhere the roll's own entity names stand, and the note says what the mailing address shows.
| Name | Type | 2026 actual value (roll) |
|---|---|---|
| BRE-BMR Flatiron I–VIII, 2100 Central and 1855 Flatiron LLCs The Flatiron Park life-science and office cluster on Central Ave and Flatiron Pkwy. Account R0093094 (5700 Flatiron Pkwy) last sold by deed 3954819 on 18 Mar 2022 for $76.4M. No filing opened ties the 'BRE-BMR' names to a parent; the Blackstone REIT's 2025 Exhibit 21 (significant subsidiaries only) does not list them. |
Private company | 25 accounts, about 68 acres, $278MA |
| Macerich Twenty Ninth Street LLC Twenty Ninth Street; Macerich holds 51% in a joint venture whose $150M loan went into default on 6 Feb 2026 (Macerich 10-K). |
REIT | 2 accounts, 20.1 acres, $217MB |
| Google Inc / Google LLC 2930 Pearl St and Unit O100 at 3000 Pearl Pkwy. |
Public company | 2 accounts, $160MA |
| KG 3100 Pearl Owner LP Apartment and mixed-use accounts at 3080–3160 Pearl Pkwy, mailed to San Antonio, TX; deed 4048421 of 23 May 2024 at $159.0M (previous sale 28 Oct 2016, $136.0M). |
Private company | 3 accounts, 6.0 acres, $150MA |
| Reve VQOF I SPE LLC et al The Reve apartment condominium at 3000 Pearl Pkwy, mailed to Irving, TX; deed 3862718 of 25 Feb 2021 at $151.25M. |
Private company | 7 accounts, $132MA |
| BCSP Pearl East Property LLC Pearl East office park, 4840–4949 Pearl East Cir, mailed to Boston, MA; deed 03894850 of 17 Jun 2021 at $190.0M across nine accounts (previous: 8 Jan 2019, $150.0M). |
Private company | 10 accounts, about 32 acres, $121MA |
?
Looked for and not found
Claims this page would have made if a source could be opened. They are left out rather than guessed.
- Who stands behind the single-asset LLCs: GBCO Owner LLC (Hotel Boulderado), St Julien Partners LLC, BRE-BMR Flatiron (Flatiron Park), BCSP Pearl East Property LLC, KG 3100 Pearl Owner LP, Reve VQOF I SPE LLC and The Standard at Boulder LLC. No filing or register opened names their members or parents.
- The size of Kyndryl's Gunbarrel holding: the County's GIS gives 1,857 acres for its two accounts, the larger account's legal description 346.92 acres.
- Which federal agencies occupy the U S Government accounts at 325 Broadway and 1850 Table Mesa Dr; the roll names only 'U S Government'.
- Who actually built the new housing. The roll gives owners of record, not builders, and the City's permit files were not opened.
- The Assessor's sale code 'U' marks a sale it does not treat as qualified; prices so coded (Hotel Boulderado, Google Unit O100, Pearl East) are the deed's recorded consideration, which may include personal property or several accounts.
- Residential and condominium owners who are private individuals are not named anywhere in this record, including where one appears among the largest commercial holders by value.
§
Sources
- Data Download: 'The Boulder County Assessor's office makes the following public data available for download. The datasets are refreshed at 4 a.m. daily' (Owners and Addresses, Buildings, Land, Permits, All Sales, Tax Areas, Property Values, Business Personal Property CSVs); General Disclaimer: data 'developed solely for internal use only by Boulder County' with no warranty — Boulder County Assessor · openA
- Owners and Addresses, Account Parcels, Land, Property Values (tax year 2026) and All Sales CSVs, files of 31 Oct 2026 (created 4:00 a.m.); accounts filtered to the 54 tax areas that levy the City of Boulder mill (Tax Areas and Tax Authorities CSV): 35,643 active accounts on 33,955 parcels, total 2026 actual value $57.2B. Acreages are this research's sums of the Land file's GIS_acreage, each parcel counted once — Boulder County Assessor · openA
- Recording Fees (effective 1 July 2025): recording fee $43 per document; documentary fee 'if consideration is more than $500 on a deed ... per each hundred dollars of consideration given $0.01'; certifying a copy $1; copies $0.25 per page — Boulder County Clerk and Recorder · openA
- The Macerich Company, Form 10-K for 2025: Item 2 property table ('51% Twenty Ninth Street(5) 1963/1979 2007 685,000 543,000 95.2% — Home Depot Boulder, Colorado') and debt notes ('Effective February 6, 2026, the $150,000 ($76,500 at the Company's pro rata share) loan on Twenty Ninth Street went into default') — US Securities and Exchange Commission (EDGAR) · openA
- Building Permits Survey, annual place files for the West Region, 2025 and 2024 (we2025a.txt, we2024a.txt), row 'Boulder' (state 08, FIPS place 07850): 2025 1-unit 31, 2-unit 2, 5+-unit 303 units in 3 buildings; 2024 1-unit 35, 2-unit 6, 3-4-unit 4, 5+-unit 361 — US Census Bureau · openA