Boulder County property record for 4345 51st St, Boulder, CO 80301
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 3,788 sqft · built 1967 |
| Lot Size | 0.876 acres (38,156 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $185,000 (Oct 1992) |
| Tax Bill | $8,456 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1463-16-0-00-010 |
| Primary APN | 1463-16-0-00-010 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 3,788 sqft Living Area |
| Gross Area | 5,735 sqft |
| 1st Floor Area | 1,841 sqft |
| Upper Floors Area | 1,947 sqft |
| Interior Walls | Paneling |
| Year Built | Built 1967 |
|---|---|
| Effective Year Built | Effective 1980 |
| Architectural Style | Ranch |
| Exterior Material | Brick Veneer |
| Construction Type | Masonry / Concrete Block |
| Roof Material | Asphalt |
| Lot Area | 38,156 sqft (0.876 acres) |
| Garage Type | Attached |
| Garage Area | 1,947 sqft |
| Parking Spaces | 7 Parking Spaces |
| Porch | Porch |
| Porch Area | 304 sqft |
| Deck Area | 208 sqft |
| Heating System | Hot Water |
|---|
| Account Number | R0067561 |
|---|---|
| Street Address | 4345 51ST ST |
| City | BOULDER |
| State | CO |
| Zip | 80301-4342 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RR |
| Legal Description | TRACT 5599 SE 1/4 NW 1/4 16-1N-70 1.00 ACS PER DEED 1090497 3/5/91 BCR |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 16 |
| Legal Subdivision | FOOTHILLS EAST |
| Legal Tract | 5599 |
| Legal Block | 3 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 12701 |
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 | 2 Individual Names on Record |
|---|---|
| Mailing Address | 4345 51ST ST, BOULDER, CO 80301-4342 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Oct 1, 1992 · Amount on Record |
| Deed Sale | Oct 1, 1992 · Amount on Record |
| Prior Sale | Mar 5, 1991 |
| Deed Document Number | 19921224687 |
| Last Transfer Date | Sep 16, 2002 |
| Transfer Doc | 0002337806 |
| Record Updated | Oct 29, 2026 |
Source: Boulder County assessment roll, as of September 18, 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Unified School District | Boulder Valley School District RE-2 (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $94,030 (+3.56%) Land $34,319 Building $59,711 | $1,452,800 (-) Land $574,700 Building $878,100 | |
| 2025 | $8,456.00 (-1.53%) | $90,800 (-13.49%) Land $35,919 Building $54,881 | $1,452,800 (-7.26%) Land $574,700 Building $878,100 |
| 2023 | $8,587.00 (+24.67%) | $104,955 (+35.16%) Land $24,984 Building $79,971 | $1,566,500 (+40.2%) Land $372,900 Building $1,193,600 |
| 2022 | $6,888.00 | $77,652 Land $20,384 Building $57,268 | $1,117,300 Land $293,300 Building $824,000 |
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 minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 29 policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 29 in force |
| Nearby Flood Claims | 5 (1995–2013) |
| Claims Outside the SFHA | 3 of 5 |
| 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 | High above 73% of the US · above 71% of Colorado |
|---|---|
| Wildfire Likelihood | 0.4% annual chance |
| Exposure | Direct burnable vegetation |
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 | LEFT HAND WD serves 20,280 people · EPA ID CO0107471 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jun 2022 |
| Lead | 1 ppb (2023–2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None 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 16 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Ayva Networks Fixed Wireless | 2,500 / 2,500 |
| Xfinity Cable | 2,000 / 250 |
| LiveWireNet Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: Verizon.
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