Boulder County property record for 445 S 40th St, Boulder, CO 80305 · Last verified June 2026
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.25 ba · 2,189 sqft · built 1956 |
| Lot Size | 0.157 acres (6,856 sqft) |
| Owner | Company Name on File |
| Last Sale | $285,000 (Dec 2004) |
| Tax Bill | $5,127 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1577-05-4-22-026 |
| Primary APN | 1577-05-4-22-026 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.25 Baths |
| Half Baths | 2 Half Baths |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 2,189 sqft Living Area |
| Gross Area | 2,524 sqft |
| 1st Floor Area | 1,152 sqft |
| Basement Area | 1,152 sqft |
| Finished Basement | 1,037 sqft |
| Unfinished Basement | 115 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1956 |
|---|---|
| Effective Year Built | Effective 1975 |
| Architectural Style | Ranch |
| Exterior Material | Brick Veneer |
| Construction Type | Masonry / Concrete Block |
| Roof Material | Asphalt |
| Lot Area | 6,856 sqft (0.157 acres) |
| Garage Type | Attached |
| Garage Area | 220 sqft |
| Parking Spaces | 1 Parking Space |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0010194 |
|---|---|
| Street Address | 445 S 40TH ST |
| City | BOULDER |
| State | CO |
| Zip | 80305-5419 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 26 BLK 5 MARTIN ACRES 2 |
| Legal Range | 70 |
| Legal Township | 1S |
| Legal Section | 05 |
| Legal Subdivision | MARTIN ACRES 2 - BO |
| Legal Block | 5 |
| Legal Lot Number | 26 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 3 |
| Census Block | 3006 |
| Census Tract | 12507 |
Source: Boulder County records · APN 1577-05-4-22-026
Assessment roll updated June 15, 2026 · Last verified June 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 File |
|---|---|
| Mailing Address | 845 5TH ST, BOULDER, CO 80302-7162 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Dec 21, 2004 · Amount on Record |
| Deed Sale | Dec 21, 2004 · Amount on Record |
| Prior Sale | May 07, 1998 · Amount on Record |
| Deed Document Number | 20042652380 |
| Record Updated | Sep 20, 2026 |
Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified June 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Municipality | Boulder City |
| Unified School District | Boulder Valley School District RE-2 (PK - 12) |
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.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $57,589 (+8.8%) Land $37,148 Building $20,441 | $846,900 (-) Land $546,300 Building $300,600 | |
| 2025 | $5,127.00 (+2.34%) | $52,932 (-12.99%) Land $34,144 Building $18,788 | $846,900 (-6.73%) Land $546,300 Building $300,600 |
| 2023 | $5,010.00 (+11.56%) | $60,836 (+27.92%) Land $40,012 Building $20,824 | $908,000 (+32.69%) Land $597,200 Building $310,800 |
| 2022 | $4,491.00 | $47,559 Land $29,677 Building $17,882 | $684,300 Land $427,000 Building $257,300 |
Source: FEMA National Flood Hazard Layer, Boulder County (08013C), updated October 14, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 080130125073, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 6 in force |
| Nearby Flood Claims | 7 (1979–2022) |
| Claims Outside the SFHA | 5 of 7 |
| Most Recent Claim | Jul 2022, rainfall accumulation |
| Claims By Storm |
|
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
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: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 678 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Ayva | Fixed Wireless (unlicensed) | 2,500 / 2,500 |
| Lumen Technologies | Fiber | 2,000 / 1,000 |
| Xfinity | Cable | 2,000 / 250 |
| Verizon | Fixed Wireless | 300 / 20 |
| Live Wire Networks | Fixed Wireless (licensed-by-rule) | 250 / 100 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
May also be available at this address: Lumen Technologies, AT&T. Availability varies by address; speeds are provider-advertised maximums, not measured.
5G and 4G LTE
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