Boulder County property record for 4780 Harrison Ave, Boulder, CO 80303
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.75 ba · 1,642 sqft · built 1968 |
| Lot Size | 0.19 acres (8,287 sqft) |
| Owner | Individual Name on File |
| Last Sale | $31,500 (Jul 1969) |
| Tax Bill | $5,484 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1463-33-2-07-002 |
| Primary APN | 1463-33-2-07-002 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,642 sqft Living Area |
| Gross Area | 2,982 sqft |
| 1st Floor Area | 1,366 sqft |
| Basement Area | 1,196 sqft |
| Year Built | Built 1968 |
|---|---|
| Effective Year Built | Effective 1985 |
| Architectural Style | Ranch |
| Exterior Material | Brick Veneer |
| Construction Type | Frame |
| Lot Area | 8,287 sqft (0.19 acres) |
| Garage Type | Attached |
| Garage Area | 420 sqft |
| Parking Spaces | 2 Parking Spaces |
| Patio Area | 150 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0011500 |
|---|---|
| Street Address | 4780 HARRISON AVE |
| City | BOULDER |
| State | CO |
| Zip | 80303-1107 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 2 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 | 2 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 3 |
| Census Block | 3005 |
| Census Tract | 12603 |
4780 Harrison Ave is owned and occupied by an individual who bought it in July 1969.
Source: Boulder County records, as of October 16, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 4780 HARRISON AVE, BOULDER, CO 80303-1107 |
| Occupancy | Owner Occupied |
| 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 | Jul 2, 1969 · Amount on File |
| Deed Sale | Jul 2, 1969 · Amount on File |
| Deed Document Number | 1969917635 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 4780 Harrison Ave was $5,484.
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 | $64,627 (+1.34%) Land $36,210 Building $28,417 | $1,020,400 (-) Land $602,500 Building $417,900 | |
| 2025 | $5,484.00 | $63,775 Land $37,656 Building $26,119 | $1,020,400 Land $602,500 Building $417,900 |
| 2023 | $5,551.00 (+21.41%) | $74,672 (+32.91%) Land $45,279 Building $29,393 | $1,114,500 (+37.86%) Land $675,800 Building $438,700 |
| 2022 | $4,572.00 | $56,184 Land $33,270 Building $22,914 | $808,400 Land $478,700 Building $329,700 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 4780 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 4780 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.
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