Boulder County property record for 639 Mapleton Ave, Boulder, CO 80304 · Last verified June 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 5 Beds |
| Bathrooms | 1.75 Baths |
| Year Built | Built 1983 |
| Square Footage | 2,499 sqft Living Area |
| Lot Size | 8,383 sqft (0.192 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $130,000 (1983) |
| Tax Bill | $12,856.00 (2025) |
| Primary APN | 1461-25-4-04-003 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Partial Baths | 1 Partial Baths |
| Total Rooms | 10 Rooms |
| Building Area | 2,499 sqft Living Area |
| 1st Floor | 1,795 sqft 1st Floor |
| Upper Floors | 704 sqft Upper Floors |
| Stories | 2 Stories |
| Interior Structure | Plaster Interior Structure |
| Year Built | Built 1900 |
|---|---|
| Effective Year Built | Effective 1983 |
| Exterior Material | Combination Exterior |
| Construction Type | Masonry/Concrete Masonry Units (CMUs) Construction |
| Roof Material | Asphalt Roof |
| Lot Area | 8,383 sqft (0.192 acres) |
| Parking Spaces | 1 Parking Spaces |
| Garage Type | Detached Garage |
| Garage Area | 280 sqft Garage |
| Patio Area | 272 sqft Patio |
| Heating System | Forced Air with Air Conditioning Heating |
|---|
| Account Number | R0005162 |
|---|---|
| Street Address | 639 MAPLETON AVE |
| City | BOULDER |
| State | CO |
| Zip | 80304-3989 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | LOTS 31-32 BLK 3 MAPLETON |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 25 |
| Legal Subdivision | MAPLETON - BO |
| Legal Block | 3 |
| Legal Lot Number | 31 |
| Jurisdiction | BOULDER CO |
| Minor Civil Division | BOULDER |
| Census Blockgroup | 4 |
| Census Block | 4006 |
| Census Tract | 12101 |
Source: Boulder County records · APN 1461-25-4-04-003
Assessment roll updated June 15, 2026 · Last verified June 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Owner on File |
|---|---|
| Mailing Address | 639 MAPLETON AVE, BOULDER, CO 80304-3989 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is a Company |
| Vesting | Owner is a Trust, Trust |
| Deed Names | Verified Name on Deed |
|---|---|
| Known Transactions |
|
| Deed Doc Number | 1983559199 |
| Last Transfer Date | May 12, 2008 |
| Transfer Doc | 0002929704 |
| Record Refreshed | Sep 20, 2026 |
Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified June 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Municipality | Boulder City |
| Unified School District | Boulder Valley School District RE-2 (PK - 12) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $153,504 (+8.8%) Land $122,448 Building $31,056 | $2,257,400 (-) Land $1,800,700 Building $456,700 | |
| 2025 | $12,856.00 (+5.8%) | $141,088 (-6.62%) Land $112,544 Building $28,544 | $2,257,400 (+0.1%) Land $1,800,700 Building $456,700 |
| 2023 | $12,151.00 (+12.48%) | $151,098 (+22.56%) Land $119,474 Building $31,624 | $2,255,200 (+27.13%) Land $1,783,200 Building $472,000 |
| 2022 | $10,803.00 | $123,286 Land $87,063 Building $36,223 | $1,773,900 Land $1,252,700 Building $521,200 |
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