Boulder County property record for 1734 Walnut St, Boulder, CO 80302
| Property Type | Multi-Family Dwellings |
|---|---|
| Details | 14 bd · 9.75 ba · 6,625 sqft · built 1900 |
| Lot Size | 0.22 acres (9,586 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $710,000 (Apr 1994) |
| Tax Bill | $20,495 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 1463-30-8-09-008 |
| Primary APN | 1463-30-8-09-008 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 14 Beds |
|---|---|
| Full Baths | 9.75 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 26 Rooms |
| Units | 12 Units |
| Building Area | 6,625 sqft Living Area |
| Gross Area | 7,075 sqft |
| 1st Floor Area | 2,707 sqft |
| Upper Floors Area | 3,918 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1900 |
|---|---|
| Effective Year Built | Effective 1970 |
| Exterior Material | Brick Veneer |
| Construction Type | Masonry / Concrete Block |
| Lot Area | 9,586 sqft (0.22 acres) |
| Garage Type | Attached |
| Garage Area | 450 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Porch |
| Porch Area | 104 sqft |
| Deck Area | 751 sqft |
| Heating System | Hot Water |
|---|
| Account Number | R0007778 |
|---|---|
| Street Address | 1734 WALNUT ST |
| City | BOULDER |
| State | CO |
| Zip | 80302-5557 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Multi-Family Dwellings |
| Legal Description | N 1/2 LOT 7 CHAMBERLAINS 1734 WALNUT & TR 540 |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 30 |
| Legal Subdivision | CHAMBERLAINS - BO |
| Legal Tract | 540 |
| Legal Block | 2 |
| Legal Lot Number | 7 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 2 |
| Census Block | 2008 |
| Census Tract | 12205 |
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 | 1450 28TH ST, BOULDER, CO 80303-1001 |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Apr 26, 1994 · Amount on Record |
| Deed Sale | Apr 26, 1994 · Amount on Record |
| Prior Sale | Oct 30, 1984 · Amount on Record |
| Deed Document Number | 19941420521 |
| Last Transfer Date | Dec 20, 2001 |
| Transfer Doc | 0002244305 |
| 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 | $223,577 (+6.53%) Land $75,813 Building $147,764 | $3,357,900 (-) Land $1,114,900 Building $2,243,000 | |
| 2025 | $20,495.00 (-5.64%) | $209,869 (-16.04%) Land $69,681 Building $140,188 | $3,357,900 (-1%) Land $1,114,900 Building $2,243,000 |
| 2023 | $21,719.00 (+82.84%) | $249,977 (+103.1%) Land $74,698 Building $175,279 | $3,731,000 (+106.13%) Land $1,114,900 Building $2,616,100 |
| 2022 | $11,879.00 | $123,080 Land $46,580 Building $76,500 | $1,810,000 Land $685,000 Building $1,125,000 |
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 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 31 individual policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 64 units insured incl. 33 condo units |
| Nearby Flood Claims | 6 (2013) |
| Claims Outside the SFHA | 2 of 6 |
| 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 432 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 |
| AT&T Fixed Wireless | 100 / 20 |
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