Boulder County property record for 328 Mapleton Ave, Boulder, CO 80304 · Last verified June 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 4 Beds |
| Bathrooms | 2.75 Baths |
| Year Built | Built 2000 |
| Square Footage | 2,683 sqft Living Area |
| Lot Size | 4,280 sqft (0.098 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $499,000 (2008) |
| Tax Bill | $11,825.00 (2025) |
| Primary APN | 1461-25-3-04-005 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.75 Baths |
| Partial Baths | 1 Partial Baths |
| Total Rooms | 9 Rooms |
| Building Area | 2,683 sqft Living Area |
| Gross Area | 2,813 sqft Gross Area |
| 1st Floor | 1,151 sqft 1st Floor |
| Upper Floors | 831 sqft Upper Floors |
| Basement Area | 831 sqft Basement |
| Finished Basement | 701 sqft Finished |
| Unfinished Basement | 130 sqft Unfinished |
| Stories | 2 Stories |
| Interior Structure | Wallboard/Drywall Interior Structure |
| Year Built | Built 1922 |
|---|---|
| Effective Year Built | Effective 2000 |
| Architectural Style | A-Frame Style |
| Exterior Material | Wood Shingle Exterior |
| Construction Type | Frame Construction |
| Roof Material | Asphalt Roof |
| Lot Area | 4,280 sqft (0.098 acres) |
| Patio Area | 200 sqft Patio |
| Porch | Porch |
| Porch Area | 72 sqft Porch |
| Heating System | Forced Air with Air Conditioning Heating |
|---|
| Account Number | R0006510 |
|---|---|
| Street Address | 328 MAPLETON AVE |
| City | BOULDER |
| State | CO |
| Zip | 80304-3978 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | LOT 8 & E 10 FT LOT 9 BLK 1 MAPLETON PARK |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 25 |
| Legal Subdivision | MAPLETON PARK - BO |
| Legal Block | 1 |
| Legal Lot Number | 8 |
| Jurisdiction | BOULDER CO |
| Minor Civil Division | BOULDER |
| Census Blockgroup | 1 |
| Census Block | 1016 |
| Census Tract | 12101 |
Source: Boulder County records · APN 1461-25-3-04-005
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 | 328 MAPLETON AVE, BOULDER, CO 80304-3978 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Deed Names | Verified Name on Deed |
|---|---|
| Known Transactions |
|
| Deed Doc Number | 20082955379 |
| 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 | $134,932 (+8.8%) Land $77,316 Building $57,616 | $1,984,300 (-) Land $1,137,000 Building $847,300 | |
| 2025 | $11,825.00 (+14.17%) | $124,019 (+0.33%) Land $71,063 Building $52,956 | $1,984,300 (+7.55%) Land $1,137,000 Building $847,300 |
| 2023 | $10,357.00 (-1.8%) | $123,615 (+8.84%) Land $74,149 Building $49,466 | $1,845,000 (+12.9%) Land $1,106,700 Building $738,300 |
| 2022 | $10,547.00 | $113,576 Land $62,209 Building $51,367 | $1,634,200 Land $895,100 Building $739,100 |
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