Boulder County property record for 424 Mapleton Ave, Boulder, CO 80304 · Last verified June 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 3 Beds |
| Bathrooms | 3.25 Baths |
| Year Built | Built 1980 |
| Square Footage | 2,966 sqft Living Area |
| Lot Size | 17,609 sqft (0.404 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $280,000 (1990) |
| Tax Bill | $18,876.00 (2025) |
| Primary APN | 1461-25-4-07-004 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3.25 Baths |
| Partial Baths | 2 Partial Baths |
| Total Rooms | 7 Rooms |
| Building Area | 2,966 sqft Living Area |
| Gross Area | 4,036 sqft Gross Area |
| 1st Floor | 1,608 sqft 1st Floor |
| Upper Floors | 1,214 sqft Upper Floors |
| Basement Area | 950 sqft Basement |
| Finished Basement | 144 sqft Finished |
| Unfinished Basement | 806 sqft Unfinished |
| Stories | 2 Stories |
| Interior Structure | Plaster Interior Structure |
| Year Built | Built 1920 |
|---|---|
| Effective Year Built | Effective 1980 |
| Exterior Material | Combination Exterior |
| Construction Type | Masonry/Concrete Masonry Units (CMUs) Construction |
| Lot Area | 17,609 sqft (0.404 acres) |
| Parking Spaces | 1 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 264 sqft Garage |
| Patio Area | 210 sqft Patio |
| Porch | Porch |
| Porch Area | 77 sqft Porch |
| Heating System | Hot Water Heating |
|---|
| Account Number | R0005407 |
|---|---|
| Street Address | 424 MAPLETON AVE |
| City | BOULDER |
| State | CO |
| Zip | 80304-3983 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | LOTS 24-28 INC BLK 5 MAPLETON SPLIT & COMBINED ON ID 8125 |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 25 |
| Legal Subdivision | MAPLETON - BO |
| Legal Block | 5 |
| Legal Lot Number | 24 |
| Jurisdiction | BOULDER CO |
| Minor Civil Division | BOULDER |
| Census Blockgroup | 4 |
| Census Block | 4013 |
| Census Tract | 12101 |
Source: Boulder County records · APN 1461-25-4-07-004
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 | 424 MAPLETON AVE, BOULDER, CO 80304-3983 |
| 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 | 19901021815 |
| 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 | $222,197 (+8.8%) Land $177,473 Building $44,724 | $3,267,600 (-) Land $2,609,900 Building $657,700 | |
| 2025 | $18,876.00 (+2.86%) | $204,225 (-8.38%) Land $163,119 Building $41,106 | $3,267,600 (-1.78%) Land $2,609,900 Building $657,700 |
| 2023 | $18,352.00 (+9.66%) | $222,896 (+19.08%) Land $167,212 Building $55,684 | $3,326,800 (+23.53%) Land $2,495,700 Building $831,100 |
| 2022 | $16,736.00 | $187,177 Land $126,184 Building $60,993 | $2,693,200 Land $1,815,600 Building $877,600 |
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