Boulder County property record for 1840 Oak Ave, Boulder, CO 80304
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3 ba · 2,295 sqft · built 1945 |
| Lot Size | 0.217 acres (9,456 sqft) |
| Owner | Individual Name on File |
| Last Sale | $620,000 (Nov 2013) |
| Tax Bill | $8,091 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1463-18-3-11-007 |
| Primary APN | 1463-18-3-11-007 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3 Baths |
| Half Baths | 3 Half Baths |
| Total Rooms | 7 Rooms |
| Building Area | 2,295 sqft Living Area |
| Gross Area | 2,984 sqft |
| 1st Floor Area | 1,053 sqft |
| Basement Area | 1,242 sqft |
| Finished Basement | 1,242 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1945 |
|---|---|
| Effective Year Built | Effective 1995 |
| Architectural Style | Bi-Level |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Roof Material | Asphalt |
| Lot Area | 9,456 sqft (0.217 acres) |
| Garage Type | Attached |
| Garage Area | 570 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Enclosed Porch |
| Porch Area | 254 sqft |
| Deck Area | 72 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0088146 |
|---|---|
| Street Address | 1840 OAK AVE |
| City | BOULDER |
| State | CO |
| Zip | 80304-1225 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | E 1/2 LOT 6 BLK 29 MOORES LESS REC NO 424919-20 |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 18 |
| Legal Subdivision | MOORES & REPLAT LOT 15 BLK 30 - BO |
| Legal Block | 29 |
| Legal Lot Number | 6 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 3 |
| Census Block | 3011 |
| Census Tract | 12105 |
1840 Oak Ave is owned and occupied by an individual who bought it in November 2013.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 1840 OAK AVE, BOULDER, CO 80304-1225 |
| 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 | Nov 22, 2013 · Amount on File |
| Deed Sale | Nov 22, 2013 · Amount on File |
| Prior Sale | Nov 22, 2013 · Amount on File |
| Deed Document Number | 20133354190 |
| Prior Transfer Date | Feb 12, 2003 |
| Prior Transfer Doc | 0002407346 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 1840 Oak Ave was $8,091.
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 | $87,570 (+3.19%) Land $51,659 Building $35,911 | $1,357,800 (-) Land $829,700 Building $528,100 | |
| 2025 | $8,091.00 | $84,862 Land $51,856 Building $33,006 | $1,357,800 Land $829,700 Building $528,100 |
| 2023 | $7,827.00 (+22.28%) | $94,330 (+36.84%) Land $53,607 Building $40,723 | $1,407,900 (+41.94%) Land $800,100 Building $607,800 |
| 2022 | $6,401.00 | $68,937 Land $43,250 Building $25,687 | $991,900 Land $622,300 Building $369,600 |
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 1840 Oak Ave in Zone X, an area of minimal flood risk, though there have been 26 flood claims nearby since 2005.
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 32 policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 32 in force |
| Nearby Flood Claims | 26 (2005–2015) |
| Claims Outside the SFHA | 10 of 26 |
| Most Recent Claim | May 2015 · Severe Storms, Tornadoes, 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 1840 Oak Ave is low, with a 0.02% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · lower than 91% of Colorado |
|---|---|
| Wildfire Likelihood | 0.02% 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 482 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| CenturyLink Fiber · DSL in parts of the area | 8,000 / 8,000 |
| Ayva Networks Fixed Wireless | 2,500 / 2,500 |
| Xfinity Cable | 2,000 / 250 |
| LiveWireNet Fixed Wireless | 250 / 100 |
May also be available: T-Mobile, Verizon.
5G (outdoors only) and 4G LTE
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