Boulder County property record for 635 Walnut St, Apt 1, Boulder, CO 80302
| Property Type | Condominium |
|---|---|
| Details | 2 bd · 1.5 ba · 934 sqft · built 1936 |
| Lot Size | 0.001 acres (26 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $83,000 (Jan 1993) |
| Tax Bill | $2,959 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 1461-25-4-53-001 |
| Primary APN | 1461-25-4-53-001 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 5 Rooms |
| Units | 5 Units |
| Building Area | 934 sqft Living Area |
| 1st Floor Area | 726 sqft |
| Upper Floors Area | 208 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1936 |
|---|---|
| Effective Year Built | Effective 1971 |
| Architectural Style | Townhouse |
| Exterior Material | Combination |
| Construction Type | Masonry / Concrete Block |
| Lot Area | 26 sqft (0.001 acres) |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0007991 |
|---|---|
| Street Address | 635 WALNUT ST, 1 |
| City | BOULDER |
| State | CO |
| Zip | 80302-5062 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Condominium |
| Legal Description | UNIT 1 WALNUT CENTER CONDOS |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 30 |
| Legal Subdivision | WALNUT CENTER CONDOS - BO |
| Legal Block | 1 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 1 |
| Census Block | 1005 |
| Census Tract | 12201 |
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 | Individual Name on Record |
|---|---|
| Mailing Address | PO BOX 506, BOULDER, CO 80306-0506 |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jan 19, 1993 · Amount on Record |
| Deed Sale | Jan 19, 1993 · Amount on Record |
| Prior Sale | Mar 2, 1990 · Amount on Record |
| Deed Document Number | 19931258671 |
| Last Transfer Date | Sep 25, 2002 |
| Transfer Doc | 0002441327 |
| Record Updated | Oct 29, 2026 |
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 | $36,518 (-2.08%) Building $36,518 | $596,700 (-) Building $596,700 | |
| 2025 | $2,959.00 (+23.7%) | $37,294 (-0.82%) Building $37,294 | $596,700 (+6.32%) Building $596,700 |
| 2024 | $2,392.00 (+1.79%) | ||
| 2023 | $2,350.00 (+0.56%) | $37,603 (+17.98%) Building $37,603 | $561,246 (+22.38%) Building $561,246 |
| 2022 | $2,337.00 | $31,873 Building $31,873 | $458,600 Building $458,600 |
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 AO, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 34 individual policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 66 units insured incl. 32 condo units |
| Nearby Flood Claims | 16 (1994–2017) |
| Claims Outside the SFHA | 10 of 16 |
| Most Recent Claim | Aug 2017 · other causes |
| 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 44% of the US · lower than 73% of Colorado |
|---|---|
| Wildfire Likelihood | 0.06% 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 426 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Ayva Networks Fixed Wireless · Fiber in parts of the area | 2,500 / 2,500 |
| CenturyLink Fiber · DSL in parts of the area | 2,000 / 1,000 |
| Xfinity Cable | 2,000 / 250 |
| LiveWireNet Fixed Wireless | 250 / 100 |
| AT&T Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Verizon.
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