Boulder County property record for 4770 Harrison Ave, Boulder, CO 80303
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,175 sqft · built 1968 |
| Lot Size | 0.182 acres (7,913 sqft) |
| Owner | Individual Name on File |
| Last Sale | $222,000 (Aug 1995) |
| Tax Bill | $6,514 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1463-33-2-07-003 |
| Primary APN | 1463-33-2-07-003 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 2 Half Baths |
| Total Rooms | 7 Rooms |
| Building Area | 2,175 sqft Living Area |
| Gross Area | 2,751 sqft |
| 1st Floor Area | 1,527 sqft |
| Basement Area | 648 sqft |
| Finished Basement | 648 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1968 |
|---|---|
| Effective Year Built | Effective 1990 |
| Architectural Style | Split Level |
| Exterior Material | Brick Veneer |
| Construction Type | Masonry / Concrete Block |
| Roof Material | Asphalt |
| Lot Area | 7,913 sqft (0.182 acres) |
| Garage Type | Attached |
| Garage Area | 576 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Porch |
| Porch Area | 290 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0011241 |
|---|---|
| Street Address | 4770 HARRISON AVE |
| City | BOULDER |
| State | CO |
| Zip | 80303-1107 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 3 BLK 2 ARAPAHOE RIDGE 3 |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 33 |
| Legal Subdivision | ARAPAHOE RIDGE 3 - BO |
| Legal Block | 2 |
| Legal Lot Number | 3 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 3 |
| Census Block | 3005 |
| Census Tract | 12603 |
4770 Harrison Ave is owned by an individual who bought it in August 1995.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | PO BOX 17444, BOULDER, CO 80308-0444 |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Aug 9, 1995 · Amount on File |
| Deed Sale | Aug 9, 1995 · Amount on File |
| Prior Sale | Jul 31, 1989 · Amount on File |
| Deed Document Number | 19951538058 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 4770 Harrison Ave was $6,514.
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 | $69,571 (+1.83%) Land $35,279 Building $34,292 | $1,093,100 (-) Land $588,800 Building $504,300 | |
| 2025 | $6,514.00 | $68,319 Land $36,800 Building $31,519 | $1,093,100 Land $588,800 Building $504,300 |
| 2023 | $6,563.00 (+18.55%) | $79,683 (+33.64%) Land $44,247 Building $35,436 | $1,189,300 (+38.63%) Land $660,400 Building $528,900 |
| 2022 | $5,536.00 | $59,624 Land $32,512 Building $27,112 | $857,900 Land $467,800 Building $390,100 |
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 4770 Harrison Ave in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 31 policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 31 in force |
| Nearby Flood Claims | 7 (2000–2013) |
| Claims Outside the SFHA | 5 of 7 |
| 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.
Wildfire risk around 4770 Harrison Ave is low, with less than a 0.01% annual chance of wildfire.
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 286 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 |
| Verizon Fixed Wireless | 300 / 20 |
| LiveWireNet Fixed Wireless | 250 / 100 |
May also be available: AT&T.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures