Boulder County property record for 4309 51st St, Boulder, CO 80301
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,922 sqft · built 1964 |
| Lot Size | 0.892 acres (38,834 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $532,500 (Aug 2008) |
| Tax Bill | $7,708 (2025) |
| Deeds & Mortgages | Dec 2025 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 1463-16-0-00-012 |
| Primary APN | 1463-16-0-00-012 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,922 sqft Living Area |
| Gross Area | 2,234 sqft |
| 1st Floor Area | 1,922 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1964 |
|---|---|
| Effective Year Built | Effective 1985 |
| Architectural Style | Ranch |
| Exterior Material | Brick Veneer |
| Construction Type | Masonry / Concrete Block |
| Roof Material | Asphalt |
| Lot Area | 38,834 sqft (0.892 acres) |
| Garage Type | Attached |
| Garage Area | 312 sqft |
| Parking Spaces | 1 Parking Space |
| Deck Area | 300 sqft |
|---|---|
| Patio Area | 1,107 sqft |
| Shed | 1 Shed |
| Total Buildings | 2 Buildings |
| Heating System | Hot Water |
|---|
| Account Number | R0029975 |
|---|---|
| Street Address | 4309 51ST ST |
| City | BOULDER |
| State | CO |
| Zip | 80301-4342 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RR |
| Legal Description | 1 AC IN SE 1/4 NW 1/4 16-1N-70 |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 16 |
| Legal Subdivision | FOOTHILLS EAST |
| 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 are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 4309 51ST ST, BOULDER, CO 80301-4342 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 6, 2008 · Amount on Record |
| Deed Sale | Aug 6, 2008 · Amount on Record |
| Prior Sale | Jun 3, 1997 · Amount on Record |
| Deed Document Number | 20082947889 |
| Last Transfer Date | Dec 19, 2025 |
| Transfer Doc | 0004113930 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Dec 22, 2025 |
| Property Address | 4309 51ST ST, BOULDER, CO 80301-4342 |
| Document Number | 0004113930 |
| Instrument Date | Dec 19, 2025 |
| Instrument | 4113930 |
| Transaction Type | Transfer |
| Record Updated | Jan 16, 2026 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 4309 51ST ST, BOULDER, CO 80301-4342 |
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 4309 51ST ST, BOULDER, CO 80301-4342 |
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 | $79,050 (+2.62%) Land $34,320 Building $44,730 | $1,232,500 (-) Land $574,700 Building $657,800 | |
| 2025 | $7,708.00 (-2.02%) | $77,031 (-9.56%) Land $35,919 Building $41,112 | $1,232,500 (-7.07%) Land $574,700 Building $657,800 |
| 2024 | $7,867.00 (+1.68%) | $85,170 (-4.15%) Land $21,298 Building $63,872 | $1,326,200 (-) Land $372,900 Building $953,300 |
| 2023 | $7,737.00 (+25.46%) | $88,856 (+41.86%) Land $24,984 Building $63,872 | $1,326,200 (+47.15%) Land $372,900 Building $953,300 |
| 2022 | $6,167.00 | $62,637 Land $20,384 Building $42,253 | $901,260 Land $293,300 Building $607,960 |
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: 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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