Boulder County property record for 2801 21st St, Boulder, CO 80304
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.5 ba · 1,359 sqft · built 1955 |
| Lot Size | 0.21 acres (9,124 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $164,000 (Sep 1993) |
| Tax Bill | $4,632 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 1463-30-1-08-008 |
| Primary APN | 1463-30-1-08-008 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,359 sqft Living Area |
| 1st Floor Area | 1,359 sqft |
| Interior Walls | Plaster |
| Year Built | Built 1955 |
|---|---|
| Effective Year Built | Effective 1955 |
| Architectural Style | Ranch |
| Exterior Material | Brick Veneer |
| Construction Type | Masonry / Concrete Block |
| Lot Area | 9,124 sqft (0.21 acres) |
| Garage Type | Carport |
| Garage Area | 220 sqft |
| Carport | Carport |
| Carport Area | 220 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Porch |
| Porch Area | 63 sqft |
| Patio Area | 189 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0002700 |
|---|---|
| Street Address | 2801 21ST ST |
| City | BOULDER |
| State | CO |
| Zip | 80304-2707 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 18 BLK 2 EDGEWOOD 1 |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 30 |
| Legal Subdivision | EDGEWOOD 1 - BO |
| Legal Block | 2 |
| Legal Lot Number | 18 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 2 |
| Census Block | 2006 |
| Census Tract | 12107 |
2801 21st St is owned and occupied by two individuals who acquired it in April 1994.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 2801 21ST ST, BOULDER, CO 80304-2707 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 3, 1993 · Amount on File |
| Deed Sale | Sep 3, 1993 · Amount on File |
| Deed Document Number | 19931333823 |
| Last Transfer Date | Apr 20, 1994 |
| Transfer Doc | 0001418322 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 2801 21st St was $4,632.
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 | $54,903 (+0.12%) Land $48,937 Building $5,966 | $877,400 (-) Land $789,660 Building $87,740 | |
| 2025 | $4,632.00 | $54,838 Land $49,354 Building $5,484 | $877,400 Land $789,660 Building $87,740 |
| 2023 | $4,779.00 (+18.09%) | $65,727 (+30.07%) Land $59,154 Building $6,573 | $981,000 (+34.92%) Land $882,900 Building $98,100 |
| 2022 | $4,047.00 | $50,533 Land $45,168 Building $5,365 | $727,100 Land $649,900 Building $77,200 |
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.
FEMA maps place 2801 21st St in Zone X, an area of moderate flood risk, within 100 ft of a high-risk flood zone.
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 moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Nearest Special Flood Hazard Area | Zone AE, within 100 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File 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.
Wildfire risk around 2801 21st St is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 97% of the US · lower than 98.8% of Colorado |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | Direct burnable vegetation |
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 640 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 | 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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