Boulder County property record for 521 Maxwell Ave, #A, Boulder, CO 80304 · Last verified August 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 4 Beds |
| Bathrooms | 4 Baths |
| Architecture Style | A-Frame |
| Year Built | Built 2005 |
| Square Footage | 3,112 sqft Living Area |
| Lot Size | 7,159 sqft (0.164 acres) |
| Garage | Detached, 304 sqft |
| Last Sale | $840,000 (2014) |
| Primary APN | 1461-25-1-05-003 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 4 Baths |
| Partial Baths | 3 Partial Baths |
| Total Rooms | 10 Rooms |
| Building Area | 3,112 sqft Living Area |
| Gross Area | 3,535 sqft Gross Area |
| 1st Floor | 1,362 sqft 1st Floor |
| Upper Floors | 1,038 sqft Upper Floors |
| Basement Area | 1,039 sqft Basement |
| Finished Basement | 712 sqft Finished |
| Unfinished Basement | 327 sqft Unfinished |
| Stories | 2 Stories |
| Interior Structure | Wallboard/Drywall Interior Structure |
| Year Built | Built 1910 |
|---|---|
| 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 | 7,159 sqft (0.164 acres) |
| Garage Type | Detached Garage |
| Garage Area | 304 sqft Garage |
| Total Buildings | 2 Total Buildings |
|---|---|
| Deck Area | 135 sqft Deck |
| Porch | Enclosed Porch |
| Porch Area | 358 sqft Porch |
| Heating System | Forced Air with Air Conditioning Heating |
|---|
| Account Number | R0003259 |
|---|---|
| Street Address | 521 MAXWELL AVE, A |
| City | BOULDER |
| State | CO |
| Zip | 80304-3937 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | E 50 FT OF WEST 150 FT BLOCK 13 AMENDED PLAT OF BLOCKS 10-13 MAXWELL ADDITION AKA E 30 FT LOT 15 & W 20 FT LOT 16 BLK 3 PHILLIPS ADDITION |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 25 |
| Legal Subdivision | PHILLIPS - BO |
| Legal Block | 13,10 |
| Legal Lot Number | 15 |
| Jurisdiction | BOULDER CO |
| Minor Civil Division | BOULDER |
| Census Blockgroup | 4 |
| Census Block | 4002 |
| Census Tract | 12101 |
Source: Boulder County records · APN 1461-25-1-05-003
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 | 2 Individuals Owners |
|---|---|
| Mailing Address | 521 MAXWELL AVE, BOULDER, CO 80304-3937 |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Vesting | Joint Tenants |
| Date | Document |
|---|---|
| Dec 27, 2022 | Deed of Trust, Mortgage · Line of Credit AMG NATIONAL TRUST BANK |
| Jun 11, 2020 | Quit Claim Deed, Transfer NOT AVAILABLE |
| Apr 28, 2020 | Deed of Trust, Mortgage CHERRY CREEK MTG |
| Apr 28, 2020 | Deed of Trust, Mortgage CHERRY CREEK MTG |
| May 16, 2019 | Intrafamily Transfer, Transfer · Conventional Mortgage UNITED WHOLESALE MORTGAGE |
| Feb 09, 2017 | Quit Claim Deed, Transfer · Conventional Mortgage LOANDEPOT.COM LLC |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Known Transactions |
|
| Deed Doc Number | 20143398527 |
| Last Transfer Date | Jan 24, 2017 |
| Transfer Doc | 0003574368 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 521 MAXWELL AVE # A, A, BOULDER, CO 80304-3937 |
| Transaction Type | Mortgage |
| Record Updated | Jan 11, 2023 |
| Name | Verified Name |
|---|---|
| Address | 521 MAXWELL AVE, BOULDER, CO 80304-3937 |
| Document Number | 0003993068 |
|---|---|
| Date | Dec 27, 2022 |
| Instrument | 3993068 |
| Name | AMG NATIONAL TRUST BANK |
|---|---|
| Type | Bank |
| Address | BOULDER, CO 80302 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 60 Months |
| Due | Dec 20, 2027 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly (Revolving credit lines are monthly unless stated otherwise). |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Jun 11, 2020 |
| Property Address | 521 MAXWELL AVE # A, A, BOULDER, CO 80304-3937 |
| Document Number | 0003790604 |
| Instrument Date | Jun 11, 2020 |
| Instrument | 3790604 |
| Transaction Type | Transfer |
| Record Updated | Jul 24, 2020 |
| Title Company | NOT AVAILABLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenant/Joint Tenant w/ Right Of Survivorship |
| Address | 165 S 32ND ST BOULDER CO 803053416, BOULDER, CO 80305-3416 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 521 MAXWELL AVE # A, A, BOULDER, CO 80304-3937 |
| Document Number | 0003799497 |
| Instrument Date | Apr 28, 2020 |
| Transaction Type | Mortgage |
| Record Updated | Aug 21, 2020 |
| Title Company | ASCENDANT TITLE INC |
| Name | Verified Name |
|---|---|
| Address | 521 MAXWELL AVE BOULDER CO 803043937, BOULDER, CO 80304-3937 |
| Document Number | 0003799497 |
|---|---|
| Date | Jul 21, 2020 |
| Instrument | 3799497 |
| Name | CHERRY CREEK MTG |
|---|---|
| Type | Mortgage Company |
| Address | GREENWOOD VILLAGE, CO 80111 |
| Amount | Amount Recorded |
|---|---|
| Term | 360 Months |
| Due | Jul 20, 2050 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 521 MAXWELL AVE # A, A, BOULDER, CO 80304-3937 |
| Document Number | 0003800390 |
| Instrument Date | Apr 28, 2020 |
| Transaction Type | Mortgage |
| Record Updated | Aug 21, 2020 |
| Title Company | CALATLANTIC TITLE COMPANY/MD, CALATLANTIC TITLE CO/MD |
| Name | Verified Name |
|---|---|
| Address | 521 MAXWELL AVE BOULDER CO 803043937, BOULDER, CO 80304-3937 |
| Document Number | 0003800390 |
|---|---|
| Date | Jul 24, 2020 |
| Instrument | 3800390 |
| Name | CHERRY CREEK MTG |
|---|---|
| Type | Mortgage Company |
| Address | GREENWOOD VILLAGE, CO 80111 |
| Amount | Amount Recorded |
|---|---|
| Term | 360 Months |
| Due | Jul 23, 2050 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | May 16, 2019 |
| Property Address | 521 MAXWELL AVE # A, A, BOULDER, CO 80304-3937 |
| Document Number | 0003712743 |
| Instrument Date | Apr 09, 2019 |
| Instrument | 3712743 |
| Transaction Type | Transfer |
| Record Updated | Mar 31, 2022 |
| Title Company | ASCENDANT TITLE CO |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Zero or No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 00000 |
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 521 MAXWELL AVE, BOULDER, CO 80304-3937 |
| Document Number | 0003712744 |
|---|---|
| Date | May 16, 2019 |
| Instrument | 3712744 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | May 01, 2049 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Feb 09, 2017 |
| Property Address | 521 MAXWELL AVE # A, A, BOULDER, CO 80304-3937 |
| Document Number | 0003574368 |
| Instrument Date | Jan 24, 2017 |
| Instrument | 3574368 |
| Transaction Type | Transfer |
| Record Updated | Feb 17, 2017 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenant/Joint Tenant w/ Right Of Survivorship |
| Address | 521 MAXWELL AVE BOULDER CO 803043937, BOULDER, CO 80304-3937 |
| Document Number | 3574369 |
|---|---|
| Date | Feb 09, 2017 |
| Instrument | 3574369 |
| Name | LOANDEPOT.COM LLC |
|---|---|
| Type | Funding / Finance Company |
| Address | FOOTHILL RANCH, CA 92610 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 180 Months |
| Due | Feb 08, 2032 |
| Document Number | 3574370, |
|---|---|
| Date | Feb 09, 2017 |
| Instrument | 3574370 |
| Name | COLORADO CU |
|---|---|
| Type | Credit Union |
| Address | LITTLETON, CO 80127 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 300 Months |
| Due | Feb 08, 2042 |
| Rate Type | Adjustable Rate |
|---|
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 | $152,184 (+8.8%) Land $112,982 Building $39,202 | $2,238,001 (-) Land $1,661,500 Building $576,501 | |
| 2025 | $13,417.00 (+3.39%) | $139,876 (-9.14%) Land $103,844 Building $36,032 | $2,238,001 (-2.6%) Land $1,661,500 Building $576,501 |
| 2023 | $12,977.00 (+6.24%) | $153,953 (+17.04%) Land $113,056 Building $40,897 | $2,297,800 (+21.4%) Land $1,687,400 Building $610,400 |
| 2022 | $12,215.00 | $131,543 Land $73,031 Building $58,512 | $1,892,700 Land $1,050,800 Building $841,900 |
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