Boulder County property record for 521 Dewey Ave, Boulder, CO 80304 · Last verified June 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 3 Beds |
| Bathrooms | 3 Baths |
| Year Built | Built 2005 |
| Square Footage | 1,756 sqft Living Area |
| Lot Size | 6,532 sqft (0.15 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $1,130,000 (2017) |
| Tax Bill | $11,747.00 (2025) |
| Primary APN | 1461-25-1-18-010 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 7 Rooms |
| Building Area | 1,756 sqft Living Area |
| 1st Floor | 980 sqft 1st Floor |
| Upper Floors | 776 sqft Upper Floors |
| Stories | 2 Stories |
| Interior Structure | Wallboard/Drywall Interior Structure |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 2005 |
| Architectural Style | A-Frame Style |
| Exterior Material | Wood Shingle Exterior |
| Construction Type | Frame Construction |
| Roof Material | Asphalt Roof |
| Lot Area | 6,532 sqft (0.15 acres) |
| Parking Spaces | 1 Parking Spaces |
| Garage Type | Detached Garage |
| Garage Area | 399 sqft Garage |
| Deck Area | 395 sqft Deck |
| Porch | Porch |
| Porch Area | 28 sqft Porch |
| Heating System | Forced Air with Air Conditioning Heating |
|---|
| Account Number | R0008588 |
|---|---|
| Street Address | 521 DEWEY AVE |
| City | BOULDER |
| State | CO |
| Zip | 80304-3929 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | LOT 12 BLK 2 LESS 10 FT ALLEY VALLEY VIEW |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 25 |
| Legal Subdivision | VALLEY VIEW & REPLAT - BO |
| Legal Block | 2 |
| Legal Lot Number | 12 |
| Jurisdiction | BOULDER CO |
| Minor Civil Division | BOULDER |
| Census Blockgroup | 1 |
| Census Block | 1010 |
| Census Tract | 12101 |
Source: Boulder County records · APN 1461-25-1-18-010
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 | 521 DEWEY AVE, BOULDER, CO 80304-3929 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Vesting | Joint Tenants |
| Date | Document |
|---|---|
| Dec 01, 2020 | Deed of Trust, Mortgage · Adjustable Rate Mortgage (ARM) ALLIANT CU |
| Jan 11, 2017 | Warranty Deed, Transfer · Adjustable Rate Mortgage (ARM) CHERRY CREEK MORTGAGE CO INC |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Known Transactions |
|
| Deed Doc Number | 20173568393 |
| Prior Transfer Date | Jan 18, 1999 |
| Prior Transfer Doc | 0001898911 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 521 DEWEY AVE, BOULDER, CO 80304-3929 |
| Transaction Type | Mortgage |
| Record Updated | Mar 31, 2022 |
| Name | Verified Name |
|---|
| Document Number | 0003837382 |
|---|---|
| Date | Dec 01, 2020 |
| Instrument | 3837382 |
| Name | ALLIANT CU |
|---|---|
| Type | Credit Union |
| Address | 60886 |
| Type | Adjustable Rate Mortgage (ARM) |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Dec 01, 2050 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 2.87% |
| Adjustable | Document includes a rider for adjustable-rate mortgage with a specific rate change date. |
| Type Change Date | Dec 01, 2027 |
| Change Frequency | Annually |
| Min Rate At Change | 2.5% |
| Max Rate At Change | 4.87% |
| Index | 1-Year LIBOR |
| Max Rate | 7.07% |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Jan 11, 2017 |
| Property Address | 521 DEWEY AVE, BOULDER, CO 80304-3929 |
| Document Number | 0003568393 |
| Map Reference | MB893 PG195 |
| Instrument Date | Jan 10, 2017 |
| Instrument | 3568393 |
| Transaction Type | Transfer |
| Record Updated | Mar 31, 2022 |
| Title Company | LAND TITLE GUARANTEE CO |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on File |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $113.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 00000 |
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 521 DEWEY AVE, BOULDER, CO 80304-3929 |
| Document Number | 0003568394 |
|---|---|
| Date | Jan 11, 2017 |
| Instrument | 3568394 |
| Name | CHERRY CREEK MORTGAGE CO INC |
|---|---|
| Type | Mortgage Company |
| Type | Adjustable Rate Mortgage (ARM) |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Feb 01, 2047 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 3.75% |
| Type Change Date | Jan 01, 2024 |
| Change Frequency | Annually |
| Min Rate At Change | 2.5% |
| Max Rate At Change | 8.75% |
| Index | 1-Year LIBOR |
| Max Rate | 8.75% |
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 | $134,048 (+8.8%) Land $95,363 Building $38,685 | $1,971,300 (-) Land $1,402,400 Building $568,900 | |
| 2025 | $11,747.00 (-0.39%) | $123,206 (-12.15%) Land $87,650 Building $35,556 | $1,971,300 (-5.82%) Land $1,402,400 Building $568,900 |
| 2023 | $11,793.00 (+24.77%) | $140,244 (+37.78%) Land $97,143 Building $43,101 | $2,093,200 (+42.92%) Land $1,449,900 Building $643,300 |
| 2022 | $9,452.00 | $101,790 Land $69,757 Building $32,033 | $1,464,600 Land $1,003,700 Building $460,900 |
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