Boulder County property record for 434 Dewey Ave, Boulder, CO 80304 · Last verified August 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 6 Beds |
| Bathrooms | 4.75 Baths |
| Year Built | Built 2008 |
| Square Footage | 4,864 sqft Living Area |
| Lot Size | 10,429 sqft (0.239 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $3,495,000 (2023) |
| Tax Bill | $23,181.00 (2025) |
| Primary APN | 1461-25-1-12-004 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 4.75 Baths |
| Partial Baths | 3 Partial Baths |
| Total Rooms | 14 Rooms |
| Building Area | 4,864 sqft Living Area |
| Gross Area | 5,491 sqft Gross Area |
| 1st Floor | 1,732 sqft 1st Floor |
| Upper Floors | 1,532 sqft Upper Floors |
| Basement Area | 1,732 sqft Basement |
| Finished Basement | 1,600 sqft Finished |
| Unfinished Basement | 132 sqft Unfinished |
| Stories | 2 Stories |
| Interior Structure | Wallboard/Drywall Interior Structure |
| Year Built | Built 2008 |
|---|---|
| Effective Year Built | Effective 2008 |
| Architectural Style | A-Frame Style |
| Exterior Material | Wood Shingle Exterior |
| Construction Type | Frame Construction |
| Roof Material | Asphalt Roof |
| Lot Area | 10,429 sqft (0.239 acres) |
| Garage Type | Carport Garage |
| Garage Area | 375 sqft Garage |
| Carport | Carport |
| Carport Area | 375 sqft Carport |
| Total Buildings | 2 Total Buildings |
|---|---|
| Deck Area | 312 sqft Deck |
| Porch | Porch |
| Porch Area | 158 sqft Porch |
| Cooling System | Central Cooling |
|---|---|
| Heating System | Radiant Heating |
| Account Number | R0001021 |
|---|---|
| Street Address | 434 DEWEY AVE |
| City | BOULDER |
| State | CO |
| Zip | 80304-3928 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | LOTS 4-5 BLK 4 BO MOUNTAIN HEIGHTS & W 1/2 VACATED ALLEY ON EAST SIDE OF LOTS PER REC#852282 |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 25 |
| Legal Subdivision | MOUNTAIN HIGHTS - BO |
| Legal Block | 4 |
| Legal Lot Number | 4 |
| Jurisdiction | BOULDER CO |
| Minor Civil Division | BOULDER |
| Census Blockgroup | 1 |
| Census Block | 1022 |
| Census Tract | 12101 |
Source: Boulder County records · APN 1461-25-1-12-004
Assessment roll updated June 15, 2026 · Last verified August 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 434 DEWEY AVE, BOULDER, CO 80304-3928 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is a Company |
| Vesting | Owner is a Trust, Family Trust |
| Date | Document |
|---|---|
| Oct 30, 2023 | Special Warranty Deed, Transfer LAND TITLE GUARANTEE |
| Jul 26, 2019 | Quit Claim Deed, Transfer ATTORNEY ONLY |
| Deed Names | Verified Name on Deed |
|---|---|
| Known Transactions |
|
| Deed Doc Number | 20234026630 |
| Last Transfer Date | Dec 05, 2024 |
| Transfer Doc | 0004070328 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Special Warranty Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Oct 30, 2023 |
| Property Address | 434 DEWEY AVE, BOULDER, CO 80304-3928 |
| Document Number | 0004026630 |
| Map Reference | DOC 852282 |
| Instrument Date | Oct 27, 2023 |
| Instrument | 4026630 |
| Transaction Type | Transfer |
| Record Updated | Nov 22, 2023 |
| Title Company | LAND TITLE GUARANTEE |
| Amount | Amount Recorded |
|---|---|
| Tax | $349.50 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 434 DEWEY AVE, BOULDER, CO 80304-3928 |
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 434 DEWEY AVE, BOULDER, CO 80304-3928 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Jul 26, 2019 |
| Property Address | 434 DEWEY AVE, BOULDER, CO 80304-3928 |
| Document Number | 0003726449 |
| Instrument Date | Jun 25, 2019 |
| Instrument | 3726449 |
| Transaction Type | Transfer |
| Record Updated | Aug 05, 2019 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 434 DEWEY AVE BOULDER CO 803043928, BOULDER, CO 80304-3928 |
Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified August 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 | $264,513 (+8.8%) Land $120,496 Building $144,017 | $3,889,900 (-) Land $1,772,000 Building $2,117,900 | |
| 2025 | $23,181.00 (-2.88%) | $243,119 (-13.2%) Land $110,750 Building $132,369 | $3,889,900 (-6.95%) Land $1,772,000 Building $2,117,900 |
| 2023 | $23,869.00 (+13.26%) | $280,080 (+23.41%) Land $122,744 Building $157,336 | $4,180,300 (+28.01%) Land $1,832,000 Building $2,348,300 |
| 2022 | $21,075.00 | $226,952 Land $88,147 Building $138,805 | $3,265,500 Land $1,268,300 Building $1,997,200 |
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