Boulder County property record for 2250 Mariposa Ave, Boulder, CO 80302
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3.25 ba · 6,020 sqft · built 1963 |
| Lot Size | 0.389 acres (16,961 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $1,113,000 (Feb 2010) |
| Tax Bill | $18,026 (2025) |
| Deeds & Mortgages | Apr 2026 Mortgage |
| Flood Zone | Zone X (moderate risk) |
| APN | 1577-06-1-03-008 |
| Primary APN | 1577-06-1-03-008 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3.25 Baths |
| Half Baths | 2 Half Baths |
| Total Rooms | 11 Rooms |
| Stories | 2 Stories |
| Building Area | 6,020 sqft Living Area |
| Gross Area | 7,041 sqft |
| 1st Floor Area | 3,153 sqft |
| Upper Floors Area | 1,182 sqft |
| Basement Area | 2,026 sqft |
| Finished Basement | 1,685 sqft |
| Unfinished Basement | 341 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1963 |
|---|---|
| Effective Year Built | Effective 1999 |
| Exterior Material | Combination |
| Construction Type | Masonry / Concrete Block |
| Roof Material | Asphalt |
| Lot Area | 16,961 sqft (0.389 acres) |
| Garage Type | Attached |
| Garage Area | 680 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Porch |
| Porch Area | 927 sqft |
| Heating System | Hot Water |
|---|
| Account Number | R0007079 |
|---|---|
| Street Address | 2250 MARIPOSA AVE |
| City | BOULDER |
| State | CO |
| Zip | 80302-7939 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOTS 8-9 OAK PARK |
| Legal Range | 70 |
| Legal Township | 1S |
| Legal Section | 06 |
| Legal Subdivision | OAK PARK & SOUTH OAK PARK - BO |
| Legal Block | 1 |
| Legal Lot Number | 8 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 12505 |
2250 Mariposa Ave is owned and occupied by two individuals who bought it in February 2010.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 2250 MARIPOSA AVE, BOULDER, CO 80302-7939 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
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 | Feb 26, 2010 · Amount on File |
| Deed Sale | Feb 26, 2010 · Amount on File |
| Prior Sale | Mar 2, 2007 · Amount on File |
| Deed Document Number | 20103061037 |
| Prior Transfer Date | Aug 27, 2007 |
| Prior Transfer Doc | 0002879303 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Apr 21, 2026 |
| Property Address | 2250 MARIPOSA AVE, BOULDER, CO 80302-7939 |
| Document Number | 0004128722 |
| Instrument Date | Apr 13, 2026 |
| Instrument | 20264128722 |
| Transaction Type | Mortgage |
| Record Updated | Jul 12, 2026 |
| Title Company | FIRST PRIORITY TITLE COMPANY, FIRST INTEGRITY TITLE COMPAN |
| Name | Verified Name |
|---|---|
| Address | 2250 MARIPOSA AVE, BOULDER, CO 80302-7939 |
| Document Number | 0004128722, |
|---|---|
| Date | Apr 21, 2026 |
| Instrument | 20264128722 |
| Name | WESTERRA CREDIT UNION |
|---|
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | May 11, 2056 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 5.5% |
| Initial Type | Adjustable Rate |
| Adjustable | Adjustable Rate Rider |
| Max Rate | -1% |
The 2025 property tax bill for 2250 Mariposa Ave was $18,026, up 16.8% from the year before.
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 | $200,933 (+6.28%) Land $90,991 Building $109,942 | $3,024,900 (-) Land $1,408,100 Building $1,616,800 | |
| 2025 | $18,026.00 (+16.79%) | $189,056 Land $88,006 Building $101,050 | $3,024,900 Land $1,408,100 Building $1,616,800 |
| 2024 | $15,434.00 (+1.77%) | ||
| 2023 | $15,166.00 (+7.4%) | $179,305 (+17.91%) Land $89,110 Building $90,195 | $2,676,200 (+22.31%) Land $1,330,000 Building $1,346,200 |
| 2022 | $14,121.00 | $152,066 Land $72,996 Building $79,070 | $2,188,000 Land $1,050,300 Building $1,137,700 |
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.
FEMA maps place 2250 Mariposa Ave in Zone X, an area of moderate flood risk, within 100 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 moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Nearest Special Flood Hazard Area | Zone AE, within 100 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 15 policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 15 in force |
| Nearby Flood Claims | 12 (1994–2013) |
| Claims Outside the SFHA | 4 of 12 |
| 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 2250 Mariposa Ave is low, with a 0.05% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 62% of the US · lower than 78% of Colorado |
|---|---|
| Wildfire Likelihood | 0.05% 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 481 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 |
| Verizon Fixed Wireless | 300 / 20 |
| LiveWireNet Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Magnolia Road Internet Cooperative.
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