Boulder County property record for 525 Mapleton Ave, Boulder, CO 80304 · Last verified June 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 2 Beds |
| Bathrooms | 1.75 Baths |
| Year Built | Built 1965 |
| Square Footage | 2,240 sqft Living Area |
| Lot Size | 8,383 sqft (0.192 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $31,500 (1967) |
| Tax Bill | $14,576.00 (2025) |
| Primary APN | 1461-25-4-05-017 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Partial Baths | 1 Partial Baths |
| Total Rooms | 4 Rooms |
| Building Area | 2,240 sqft Living Area |
| Gross Area | 2,870 sqft Gross Area |
| 1st Floor | 1,120 sqft 1st Floor |
| Upper Floors | 1,120 sqft Upper Floors |
| Basement Area | 630 sqft Basement |
| Stories | 2 Stories |
| Interior Structure | Plaster Interior Structure |
| Year Built | Built 1903 |
|---|---|
| Effective Year Built | Effective 1965 |
| 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 | 270 sqft Garage |
| Porch | Porch |
| Porch Area | 369 sqft Porch |
| Heating System | Forced Air with Air Conditioning Heating |
|---|
| Account Number | R0002087 |
|---|---|
| Street Address | 525 MAPLETON AVE |
| City | BOULDER |
| State | CO |
| Zip | 80304-3987 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | LOTS 52-53 BLK 4 MAPLETON |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 25 |
| Legal Subdivision | MAPLETON - BO |
| Legal Block | 4 |
| Legal Lot Number | 52 |
| Jurisdiction | BOULDER CO |
| Minor Civil Division | BOULDER |
| Census Blockgroup | 4 |
| Census Block | 4005 |
| Census Tract | 12101 |
Source: Boulder County records · APN 1461-25-4-05-017
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 | 2 Individuals Owners |
|---|---|
| Mailing Address | 525 MAPLETON AVE, BOULDER, CO 80304-3987 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Known Transactions |
|
| Deed Doc Number | 1967863160 |
| 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 | $173,128 (+8.8%) Land $122,448 Building $50,680 | $2,546,000 (-) Land $1,800,700 Building $745,300 | |
| 2025 | $14,576.00 (+4.04%) | $159,125 (-7.82%) Land $112,544 Building $46,581 | $2,546,000 (-1.18%) Land $1,800,700 Building $745,300 |
| 2023 | $14,010.00 (+9.42%) | $172,625 (+19.18%) Land $119,474 Building $53,151 | $2,576,500 (+23.63%) Land $1,783,200 Building $793,300 |
| 2022 | $12,804.00 | $144,838 Land $87,063 Building $57,775 | $2,084,000 Land $1,252,700 Building $831,300 |
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