Boulder County property record for 2520 23rd St, Boulder, CO 80304
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3.5 ba · 3,502 sqft · built 1999 |
| Lot Size | 0.187 acres (8,133 sqft) |
| Owner | Company Name on Record |
| Last Sale | $1,755,000 (Mar 2016) |
| Tax Bill | $18,459 (2025) |
| Deeds & Mortgages | May 2018 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 1463-30-1-00-025 |
| Primary APN | 1463-30-1-00-025 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 12 Rooms |
| Stories | 2 Stories |
| Building Area | 3,502 sqft Living Area |
| Gross Area | 3,985 sqft |
| 1st Floor Area | 1,373 sqft |
| Upper Floors Area | 1,060 sqft |
| Basement Area | 1,069 sqft |
| Finished Basement | 1,069 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1999 |
|---|---|
| Effective Year Built | Effective 1999 |
| Architectural Style | A-Frame |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Roof Material | Asphalt |
| Lot Area | 8,133 sqft (0.187 acres) |
| Garage Type | Attached |
| Garage Area | 483 sqft |
| Porch | Porch |
|---|---|
| Porch Area | 104 sqft |
| Deck Area | 239 sqft |
| Total Buildings | 2 Buildings |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0067690 |
|---|---|
| Street Address | 2520 23RD ST |
| City | BOULDER |
| State | CO |
| Zip | 80304-3706 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | TRACT 563B LESS B1 BO 30-1N-70 TRACT 563-A LESS A1 & TRACT 563 LESS A-B-C |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 30 |
| Legal Subdivision | TR, NBR 101-103,105,107,109,170 |
| Legal Tract | 563B,563-A |
| Legal Block | 2 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 12107 |
Source: Boulder County records, as of September 18, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 2520 23RD ST, BOULDER, CO 80304-3706 |
| Owner Type | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Mar 31, 2016 · Amount on Record |
| Deed Sale | Mar 31, 2016 · Amount on Record |
| Prior Sale | Oct 3, 2005 · Amount on Record |
| Deed Document Number | 20163509393 |
| Prior Transfer Date | Aug 5, 2004 |
| Prior Transfer Doc | 0002618873 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | May 30, 2018 |
| Property Address | 2520 23RD ST, BOULDER, CO 80304-3706 |
| Document Number | 0003657939 |
| Instrument Date | May 9, 2018 |
| Instrument | 3657939 |
| Transaction Type | Transfer |
| Record Updated | Jun 8, 2018 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 2520 23RD ST BOULDER CO 803043706, BOULDER, CO 80304-3706 |
Source: Boulder County assessment roll, as of September 18, 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Municipality | Boulder City |
| Unified School District | Boulder Valley School District RE-2 (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $204,959 (+6.33%) Land $73,943 Building $131,016 | $3,084,100 (-) Land $1,157,400 Building $1,926,700 | |
| 2025 | $18,459.00 (+0.7%) | $192,757 (-8.8%) Land $72,338 Building $120,419 | $3,084,100 (-2.24%) Land $1,157,400 Building $1,926,700 |
| 2024 | $18,330.00 (+1.78%) | ||
| 2023 | $18,010.00 (+9.81%) | $211,365 (+20.22%) Land $76,179 Building $135,186 | $3,154,700 (+24.71%) Land $1,137,000 Building $2,017,700 |
| 2022 | $16,401.00 | $175,814 Land $59,450 Building $116,364 | $2,529,700 Land $855,400 Building $1,674,300 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
Source: FEMA National Flood Hazard Layer, effective October 14, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 31 policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 31 in force |
| Nearby Flood Claims | 5 (2013) |
| Claims Outside the SFHA | 2 of 5 |
| Most Recent Claim | Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides |
| Claims by Event |
|
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.1% of the US · lower than 99.6% of Colorado |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond ember reach |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | CITY OF BOULDER serves 166,080 people · EPA ID CO0107152 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Sep 2024 |
| Lead | 2 ppb (2023–2025) action level 15 ppb |
| Water Quality | Haloacetic acids resolved · Jul 2017 |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 1 last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 663 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Ayva Networks Fixed Wireless | 2,500 / 2,500 |
| CenturyLink Fiber · DSL in parts of the area | 2,000 / 1,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| LiveWireNet Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: AT&T.
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