Boulder County property record for 870 Grant Pl, Boulder, CO 80302
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.5 ba · 4,008 sqft · built 1925 |
| Lot Size | 0.145 acres (6,309 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $1,150,000 (Aug 2011) |
| Tax Bill | $11,143 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1461-36-4-17-019 |
| Primary APN | 1461-36-4-17-019 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 2 Half Baths |
| Total Rooms | 9 Rooms |
| Stories | 1 Story |
| Building Area | 4,008 sqft Living Area |
| 1st Floor Area | 2,039 sqft |
| Basement Area | 1,969 sqft |
| Finished Basement | 1,969 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1925 |
|---|---|
| Effective Year Built | Effective 1992 |
| Architectural Style | Ranch |
| Exterior Material | Combination |
| Construction Type | Masonry / Concrete Block |
| Roof Material | Asphalt |
| Lot Area | 6,309 sqft (0.145 acres) |
| Garage Type | Detached |
| Garage Area | 384 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Porch |
|---|---|
| Porch Area | 358 sqft |
| Deck Area | 100 sqft |
| Patio Area | 308 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0005029 |
|---|---|
| Street Address | 870 GRANT PL |
| City | BOULDER |
| State | CO |
| Zip | 80302-7415 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOTS 41-42 BLK 1 CHAUTAUQUA HEIGHTS |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 36 |
| Legal Subdivision | CHAUTAUQUA HEIGHTS - BO |
| Legal Block | 1 |
| Legal Lot Number | 41 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 3 |
| Census Block | 3024 |
| Census Tract | 12201 |
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 | 870 GRANT PL, BOULDER, CO 80302-7415 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Tenants in Common |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 10, 2011 · Amount on Record |
| Deed Sale | Aug 10, 2011 · Amount on Record |
| Prior Sale | Aug 15, 2008 · Amount on Record |
| Deed Document Number | 20113164540 |
| Record Updated | Oct 29, 2026 |
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 | $129,200 (+4.93%) Land $92,500 Building $36,700 | $1,970,000 (-) Land $1,360,300 Building $609,700 | |
| 2025 | $11,143.00 (-14.56%) | $123,125 (-23.72%) Land $85,019 Building $38,106 | $1,970,000 (-18.23%) Land $1,360,300 Building $609,700 |
| 2023 | $13,042.00 (+12.38%) | $161,416 (+22.36%) Land $91,140 Building $70,276 | $2,409,200 (+26.93%) Land $1,360,300 Building $1,048,900 |
| 2022 | $11,605.00 | $131,918 Land $76,895 Building $55,023 | $1,898,100 Land $1,106,400 Building $791,700 |
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 34 policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 34 in force |
| Nearby Flood Claims | 29 (1983–2025) |
| Claims Outside the SFHA | 10 of 29 |
| Most Recent Claim | Apr 2025 · other causes |
| 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 | Moderate above 54% of the US · lower than 62% of Colorado |
|---|---|
| Wildfire Likelihood | 0.1% 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 550 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 · DSL in parts of the area | 2,000 / 1,000 |
| 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: Magnolia Road Internet Cooperative, Verizon.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures