Boulder County property record for 3870 Spring Valley Rd, Boulder, CO 80304
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.75 ba · 5,035 sqft · built 1969 |
| Lot Size | 0.77 acres (33,518 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $642,880 (Jun 1999) |
| Tax Bill | $16,698 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1461-13-3-06-008 |
| Primary APN | 1461-13-3-06-008 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.75 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 5,035 sqft Living Area |
| Gross Area | 5,847 sqft |
| 1st Floor Area | 2,284 sqft |
| Upper Floors Area | 752 sqft |
| Basement Area | 2,151 sqft |
| Finished Basement | 1,999 sqft |
| Unfinished Basement | 152 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1969 |
|---|---|
| Effective Year Built | Effective 1992 |
| Exterior Material | Brick Veneer |
| Construction Type | Frame |
| Lot Area | 33,518 sqft (0.77 acres) |
| Garage Type | Attached |
| Garage Area | 660 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Porch |
| Porch Area | 66 sqft |
| Deck Area | 1,049 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0033828 |
|---|---|
| Street Address | 3870 SPRING VALLEY RD |
| City | BOULDER |
| State | CO |
| Zip | 80304-1009 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RR |
| Legal Description | LOT 5 SPRING VALLEY ESTATES |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 13 |
| Legal Subdivision | SPRING VALLEY ESTATES - BOV |
| Legal Block | 2 |
| Legal Lot Number | 5 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 2 |
| Census Block | 2007 |
| Census Tract | 12104 |
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 | 3870 SPRING VALLEY RD, BOULDER, CO 80304-1009 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jun 1, 1999 · Amount on Record |
| Deed Sale | Jun 1, 1999 · Amount on Record |
| Prior Sale | Mar 3, 1993 · Amount on Record |
| Deed Document Number | 19991944797 |
| Prior Transfer Date | May 5, 1998 |
| Prior Transfer Doc | 0001802153 |
| Record Updated | Oct 29, 2026 |
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 | $184,722 (+6.07%) Land $163,071 Building $21,651 | $2,786,500 (-) Land $2,468,100 Building $318,400 | |
| 2025 | $16,698.00 (+2.85%) | $174,156 (-8.28%) Land $154,256 Building $19,900 | $2,786,500 (-1.68%) Land $2,468,100 Building $318,400 |
| 2023 | $16,236.00 (+19.75%) | $189,878 (+29.36%) Land $167,728 Building $22,150 | $2,834,000 (+34.19%) Land $2,503,400 Building $330,600 |
| 2022 | $13,558.00 | $146,777 Land $130,709 Building $16,068 | $2,111,900 Land $1,880,700 Building $231,200 |
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 20 policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 20 in force |
| Nearby Flood Claims | 8 (1991–2025) |
| Claims Outside the SFHA | 7 of 8 |
| Most Recent Claim | May 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 | High above 79% of the US · above 81% of Colorado |
|---|---|
| Wildfire Likelihood | 0.6% 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 | SPRING VALLEY MUTUAL WA private · serves 100 people · EPA ID CO0107719 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Mar 2024 |
| Also Mapped Here | CITY OF BOULDER |
| Lead | Under 1 ppb (2026) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | Corrosion control Dec 2018 |
| Monitoring and Reporting | None 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. The service area is an EPA estimate; the actual supplier may differ.
Source: FCC Broadband Data Collection, based on 232 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 |
May also be available: Verizon.
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