Boulder County property record for 670 Grape Ave, Boulder, CO 80304
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,413 sqft · built 1978 |
| Lot Size | 0.21 acres (9,166 sqft) |
| Owner | 2 Company Names on File |
| Last Sale | $125,000 (May 1985) |
| Tax Bill | $7,996 (2025) |
| Deeds & Mortgages | May 2021 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 1461-24-4-31-003 |
| Primary APN | 1461-24-4-31-003 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Building Area | 2,413 sqft Living Area |
| 1st Floor Area | 1,372 sqft |
| Upper Floors Area | 519 sqft |
| Basement Area | 522 sqft |
| Finished Basement | 522 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1978 |
|---|---|
| Effective Year Built | Effective 1980 |
| Architectural Style | Split Level |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Roof Material | Asphalt |
| Lot Area | 9,166 sqft (0.21 acres) |
| Garage Type | Detached |
| Garage Area | 300 sqft |
| Parking Spaces | 1 Parking Space |
| Deck Area | 843 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0005607 |
|---|---|
| Street Address | 670 GRAPE AVE |
| City | BOULDER |
| State | CO |
| Zip | 80304-2121 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 2 & OUTLOT 2 GRAPE CLUSTER |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 24 |
| Legal Subdivision | GRAPE CLUSTER - BO |
| Legal Block | 2 |
| Legal Lot Number | 2 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 2 |
| Census Block | 2016 |
| Census Tract | 12101 |
670 Grape Ave is owned by a company that acquired it in May 2021.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 670 GRAPE AVE, BOULDER, CO 80304-2121 |
| Owner Type | Company |
| Vesting | Borrower in Default |
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 | 2 Names on Deed |
|---|---|
| Last Sale | May 30, 1985 · Amount on File |
| Deed Sale | May 30, 1985 · Amount on File |
| Prior Sale | Aug 4, 1981 · Amount on File |
| Deed Document Number | 1985691112 |
| Last Transfer Date | May 19, 2021 |
| Transfer Doc | 0003886504 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | May 19, 2021 |
| Property Address | 670 GRAPE AVE, BOULDER, CO 80304-2121 |
| Document Number | 0003886504 |
| Instrument Date | May 19, 2021 |
| Instrument | 3886504 |
| Transaction Type | Transfer |
| Record Updated | Jun 1, 2021 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 670 GRAPE AVE, BOULDER, CO 80304-2121 |
The 2025 property tax bill for 670 Grape Ave was $7,996.
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 | $93,282 (+3.52%) Land $83,478 Building $9,804 | $1,441,800 (-) Land $1,297,620 Building $144,180 | |
| 2025 | $7,996.00 | $90,112 Land $81,101 Building $9,011 | $1,441,800 Land $1,297,620 Building $144,180 |
| 2023 | $7,906.00 (+20.92%) | $101,933 (+31.76%) Land $91,740 Building $10,193 | $1,521,400 (+36.68%) Land $1,369,260 Building $152,140 |
| 2022 | $6,538.00 | $77,360 Land $69,624 Building $7,736 | $1,113,100 Land $1,001,790 Building $111,310 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 670 Grape Ave in Zone X, an area of minimal flood risk, though there have been 25 flood claims nearby since 1990.
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 File median of 63 policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 63 in force |
| Nearby Flood Claims | 25 (1990–2026) |
| Claims Outside the SFHA | 17 of 25 |
| Most Recent Claim | Jun 2026 · rainfall accumulation |
| 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 670 Grape Ave is moderate, ranking above 58% of the US, with a 0.2% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 58% of the US · above 43% of Colorado |
|---|---|
| Wildfire Likelihood | 0.2% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 431 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 | 2,000 / 1,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| LiveWireNet Fixed Wireless | 250 / 100 |
May also be available: T-Mobile.
5G (outdoors only) and 4G LTE
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