Boulder County property record for 528 18th St, Boulder, CO 80302 · Last verified June 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 3 Beds |
| Bathrooms | 2 Baths |
| Year Built | Built 1990 |
| Square Footage | 1,639 sqft Living Area |
| Lot Size | 7,758 sqft (0.178 acres) |
| Garage | Attached, 200 sqft |
| Last Sale | $1,100,000 (2021) |
| Tax Bill | $7,529.00 (2025) |
| Primary APN | 1577-06-2-08-002 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 6 Rooms |
| Building Area | 1,639 sqft Living Area |
| Gross Area | 1,839 sqft Gross Area |
| 1st Floor | 1,639 sqft 1st Floor |
| Basement Area | 320 sqft Basement |
| Stories | 1 Stories |
| Interior Structure | Wallboard/Drywall Interior Structure |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1990 |
| Architectural Style | Ranch Style |
| Exterior Material | Wood Shingle Exterior |
| Construction Type | Frame Construction |
| Roof Material | Asphalt Roof |
| Lot Area | 7,758 sqft (0.178 acres) |
| Parking Spaces | 1 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 200 sqft Garage |
| Deck Area | 304 sqft Deck |
| Porch | Porch |
| Porch Area | 84 sqft Porch |
| Cooling System | Central Cooling |
|---|---|
| Heating System | Forced Air with Air Conditioning Heating |
| Account Number | R0008294 |
|---|---|
| Street Address | 528 18TH ST |
| City | BOULDER |
| State | CO |
| Zip | 80302-7905 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | N 75 FT LOTS 5-6 BLK 11 FLORAL PARK |
| Legal Range | 70 |
| Legal Township | 1S |
| Legal Section | 06 |
| Legal Subdivision | FLORAL PARK & WEIHOFEN RESUB - BO |
| Legal Block | 11 |
| Legal Lot Number | 5 |
| Jurisdiction | BOULDER CO |
| Minor Civil Division | BOULDER |
| Census Blockgroup | 1 |
| Census Block | 1011 |
| Census Tract | 12505 |
Source: Boulder County records · APN 1577-06-2-08-002
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 | 528 18TH ST, BOULDER, CO 80302-7905 |
| Owner Type | Owner is a Company |
| Vesting | Trustor/Debtor (Borrower in Default/Foreclosure On Trustee's Deed) |
| Date | Document |
|---|---|
| Aug 05, 2021 | Special Warranty Deed, Transfer · Conventional Mortgage COLONIAL NATIONAL MORTGAGE |
| Jul 31, 2020 | Warranty Deed, Transfer FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO |
| Deed Names | Verified Name on Deed |
|---|---|
| Known Transactions |
|
| Deed Doc Number | 20213904869 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Special Warranty Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Aug 05, 2021 |
| Property Address | 528 18TH ST, BOULDER, CO 80302-7905 |
| Document Number | 0003904869 |
| Instrument Date | Aug 04, 2021 |
| Instrument | 3904869 |
| Transaction Type | Transfer |
| Record Updated | Aug 16, 2021 |
| Title Company | FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on File |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $110.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 528 18TH ST, BOULDER, CO 80302-7905 |
| Document Number | 0003904871 |
|---|---|
| Date | Aug 05, 2021 |
| Instrument | 3904871 |
| Name | COLONIAL NATIONAL MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Sep 01, 2051 |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Jul 31, 2020 |
| Property Address | 528 18TH ST, BOULDER, CO 80302-7905 |
| Document Number | 0003803104 |
| Instrument Date | Jul 30, 2020 |
| Instrument | 3803104 |
| Transaction Type | Transfer |
| Record Updated | Aug 31, 2020 |
| Title Company | FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO |
| Amount | Amount Recorded |
|---|---|
| Tax | $103.00 |
| Amount Accuracy | Confirmed |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 601 KALMIA AVE BOULDER CO 803041735, BOULDER, CO 80304-1735 |
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 | $85,000 (+8.8%) Land $66,790 Building $18,210 | $1,250,000 (-) Land $982,200 Building $267,800 | |
| 2025 | $7,529.00 (-11.4%) | $78,126 (-22.82%) Land $61,388 Building $16,738 | $1,250,000 (-17.27%) Land $982,200 Building $267,800 |
| 2023 | $8,498.00 (+25.51%) | $101,231 (+40.38%) Land $62,545 Building $38,686 | $1,510,900 (+45.61%) Land $933,500 Building $577,400 |
| 2022 | $6,771.00 | $72,114 Land $43,271 Building $28,843 | $1,037,600 Land $622,600 Building $415,000 |
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