Boulder County property record for 350 20th St, Boulder, CO 80302
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 872 sqft · built 1954 |
| Lot Size | 0.217 acres (9,452 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $421,000 (Sep 2001) |
| Tax Bill | $5,809 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 1577-06-1-10-007 |
| Primary APN | 1577-06-1-10-007 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 872 sqft Living Area |
| Gross Area | 1,062 sqft |
| 1st Floor Area | 872 sqft |
| Interior Walls | Plaster |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 1964 |
| Architectural Style | Ranch |
| Exterior Material | Brick Veneer |
| Construction Type | Masonry / Concrete Block |
| Roof Material | Asphalt |
| Lot Area | 9,452 sqft (0.217 acres) |
| Garage Type | Attached |
| Garage Area | 190 sqft |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | 192 sqft |
| Patio Area | 520 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0007593 |
|---|---|
| Street Address | 350 20TH ST |
| City | BOULDER |
| State | CO |
| Zip | 80302-8011 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | S 2.87 FT LOT 7 ALL LOT 8 & N 10 FT LOT 9 & ALLEY ADJ BLK 16 INTERURBAN PARK |
| Legal Range | 70 |
| Legal Township | 1S |
| Legal Section | 06 |
| Legal Subdivision | INTERURBAN PARK - BO |
| Legal Block | 16 |
| Legal Lot Number | 7 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 1 |
| Census Block | 1025 |
| Census Tract | 12505 |
Source: Boulder County records, as of June 15, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Mailing Address | 350 20TH ST, BOULDER, CO 80302-8011 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Sep 4, 2001 · Amount on Record |
| Deed Sale | Sep 4, 2001 · Amount on Record |
| Prior Sale | Dec 16, 1997 · Amount on Record |
| Deed Document Number | 20012192816 |
| Record Updated | Sep 20, 2026 |
Source: Boulder County assessment roll, as of June 15, 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 | $73,093 (+8.8%) Land $65,784 Building $7,309 | $1,074,900 (-) Land $967,410 Building $107,490 | |
| 2025 | $5,809.00 (+17.35%) | $67,181 (-0.77%) Land $60,463 Building $6,718 | $1,074,900 (+6.37%) Land $967,410 Building $107,490 |
| 2023 | $4,950.00 (-8.79%) | $67,703 (+15.85%) Land $60,933 Building $6,770 | $1,010,500 (+20.17%) Land $909,450 Building $101,050 |
| 2022 | $5,427.00 | $58,442 Land $52,598 Building $5,844 | $840,900 Land $756,810 Building $84,090 |
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 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 Record median of 15 policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 15 in force |
| Nearby Flood Claims | 12 (1994–2013) |
| Claims Outside the SFHA | 4 of 12 |
| 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 | Moderate above 67% of the US · above 59% of Colorado |
|---|---|
| Wildfire Likelihood | 0.2% annual chance |
| Exposure | Indirect within 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 481 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: Magnolia Road Internet Cooperative.
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