Boulder County property record for 425 Mapleton Ave, Apt B, Boulder, CO 80304 · Last verified June 2026
| Property Type | Residential > Condominium / Townhouse > Condominium |
|---|---|
| Bedrooms | 1 Beds |
| Bathrooms | 1 Baths |
| Year Built | Built 1906 |
| Square Footage | 607 sqft Living Area |
| Lot Size | 25 sqft (0.001 acres) |
| Garage | Detached, 235 sqft |
| Last Sale | $427,000 (2015) |
| Tax Bill | $4,607.00 (2025) |
| Primary APN | 1461-25-4-85-009 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 1 Beds |
|---|---|
| Full Baths | 1 Baths |
| Total Rooms | 4 Rooms |
| Units | 3 Units |
| Building Area | 607 sqft Living Area |
| 1st Floor | 607 sqft 1st Floor |
| Stories | 1 Stories |
| Interior Structure | Wallboard/Drywall Interior Structure |
| Year Built | Built 1906 |
|---|---|
| Effective Year Built | Effective 1906 |
| Architectural Style | Townhouse Style |
| Exterior Material | Combination Exterior |
| Construction Type | Masonry/Concrete Masonry Units (CMUs) Construction |
| Lot Area | 25 sqft (0.001 acres) |
| Parking Spaces | 1 Parking Spaces |
| Garage Type | Detached Garage |
| Garage Area | 235 sqft Garage |
| Deck Area | 204 sqft Deck |
| Heating System | Hot Water Heating |
|---|
| Account Number | R0140901 |
|---|---|
| Street Address | 425 MAPLETON AVE, B |
| City | BOULDER |
| State | CO |
| Zip | 80304-3995 |
| Property Usage | Residential Property Usage |
| Type | Residential > Condominium / Townhouse > Condominium |
| Legal Description | UNIT 425B MAPLETON AVENUE CONDOMINIUMS & UND 9.07% INT IN GCE |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 25 |
| Legal Subdivision | MAPLETON AVENUE CONDOMINIUMS - BO |
| Legal Block | 4 |
| Legal Unit | 425B |
| Jurisdiction | BOULDER CO |
| Minor Civil Division | BOULDER |
| Census Blockgroup | 4 |
| Census Block | 4004 |
| Census Tract | 12101 |
Source: Boulder County records · APN 1461-25-4-85-009
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 | 429 MAXWELL AVE, BOULDER, CO 80304-3935 |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Deed Names | Verified Name on Deed |
|---|---|
| Known Transactions |
|
| Deed Doc Number | 20153464937 |
| 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, not market price estimates; both are a fraction of this property's market value.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $51,653 (+8.8%) Building $51,653 | $759,600 (-) Building $759,600 | |
| 2025 | $4,607.00 (+33.46%) | $47,475 (+10.48%) Building $47,475 | $759,600 (+18.43%) Building $759,600 |
| 2024 | $3,452.00 (+1.77%) | ||
| 2023 | $3,392.00 (-1.11%) | $42,972 (+16.33%) Building $42,972 | $641,377 (+20.67%) Building $641,377 |
| 2022 | $3,430.00 | $36,939 Building $36,939 | $531,500 Building $531,500 |
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