Boulder County property record for 525 S 46th St, Boulder, CO 80305
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.25 ba · 2,128 sqft · built 1958 |
| Lot Size | 0.174 acres (7,587 sqft) |
| Owner | Individual Name on File |
| Last Sale | $392,000 (Dec 2005) |
| Tax Bill | $5,046 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1577-08-1-02-036 |
| Primary APN | 1577-08-1-02-036 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.25 Baths |
| Half Baths | 2 Half Baths |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 2,128 sqft Living Area |
| Gross Area | 2,598 sqft |
| 1st Floor Area | 884 sqft |
| Upper Floors Area | 544 sqft |
| Basement Area | 884 sqft |
| Finished Basement | 700 sqft |
| Unfinished Basement | 184 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1958 |
|---|---|
| Effective Year Built | Effective 1963 |
| Exterior Material | Brick Veneer |
| Construction Type | Masonry / Concrete Block |
| Lot Area | 7,587 sqft (0.174 acres) |
| Garage Type | Attached |
| Garage Area | 286 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Porch |
| Porch Area | 320 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0011392 |
|---|---|
| Street Address | 525 S 46TH ST |
| City | BOULDER |
| State | CO |
| Zip | 80305-6037 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 36 BLK 2 MARTIN ACRES 3 |
| Legal Range | 70 |
| Legal Township | 1S |
| Legal Section | 05 |
| Legal Subdivision | MARTIN ACRES 3 - BO |
| Legal Block | 2 |
| Legal Lot Number | 36 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 12508 |
525 S 46th St is owned and occupied by an individual who acquired it in December 2005.
Source: Boulder County records, as of October 12, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 525 S 46TH ST, BOULDER, CO 80305-6037 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Dec 16, 2005 · Amount on File |
| Deed Sale | Dec 16, 2005 · Amount on File |
| Prior Sale | Nov 26, 1999 · Amount on File |
| Deed Document Number | 20052744889 |
| Last Transfer Date | Dec 28, 2005 |
| Transfer Doc | 0002748714 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 525 S 46th St was $5,046, up 1.2% from the year before.
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 | $52,822 (-0.19%) Land $28,553 Building $24,269 | $846,800 (-) Land $489,900 Building $356,900 | |
| 2025 | $5,046.00 (+1.22%) | $52,925 Land $30,619 Building $22,306 | $846,800 Land $489,900 Building $356,900 |
| 2024 | $4,985.00 (+1.76%) | ||
| 2023 | $4,899.00 (+12.93%) | $60,414 (+29.32%) Land $36,187 Building $24,227 | $901,700 (+34.14%) Land $540,100 Building $361,600 |
| 2022 | $4,338.00 | $46,718 Land $26,938 Building $19,780 | $672,200 Land $387,600 Building $284,600 |
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.
FEMA maps place 525 S 46th St in Zone X, an area of minimal flood risk.
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 minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 5 in force |
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 525 S 46th St is low, with a 0.04% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 67% of the US · lower than 84% of Colorado |
|---|---|
| Wildfire Likelihood | 0.04% 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 678 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: AT&T.
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