Boulder County property record for 2457 20th St, Boulder, CO 80304
| Property Type | Multi-Family Dwellings |
|---|---|
| Details | 6 bd · 2.5 ba · 1,824 sqft · built 1946 |
| Lot Size | 0.16 acres (6,973 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $900,000 (Jul 2021) |
| Tax Bill | $5,703 (2025) |
| Deeds & Mortgages | Jul 2021 Sale & Mortgage Dec 2017 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 1463-30-5-02-004 |
| Primary APN | 1463-30-5-02-004 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Units | 2 Units |
| Stories | 1 Story |
| Building Area | 1,824 sqft Living Area |
| 1st Floor Area | 1,122 sqft |
| Basement Area | 702 sqft |
| Finished Basement | 702 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1946 |
|---|---|
| Effective Year Built | Effective 1975 |
| Architectural Style | Ranch |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Roof Material | Asphalt |
| Lot Area | 6,973 sqft (0.16 acres) |
| Garage Type | Detached |
| Garage Area | 280 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Porch |
| Porch Area | 84 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0005229 |
|---|---|
| Street Address | 2457 20TH ST |
| City | BOULDER |
| State | CO |
| Zip | 80304-3653 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Multi-Family Dwellings |
| Legal Description | LOT 6 BLK K WIDNERS NORTH |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 30 |
| Legal Subdivision | WIDNERS NORTH - BO |
| Legal Block | K |
| Legal Lot Number | 6 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 2 |
| Census Block | 2015 |
| Census Tract | 12107 |
Source: Boulder County records, as of September 18, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 310 INCA PKWY, BOULDER, CO 80303-3518 |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Jul 27, 2021 | Warranty Deed, Transfer · Conventional Mortgage UNITED WHOLESALE MORTGAGE |
| Dec 8, 2017 | Affidavit of Death, Transfer ATTORNEY ONLY |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jul 27, 2021 · Amount on Record |
| Deed Sale | Jul 27, 2021 · Amount on Record |
| Prior Sale | Dec 16, 1976 · Amount on Record |
| Deed Document Number | 20213902826 |
| Prior Transfer Date | Dec 20, 2016 |
| Prior Transfer Doc | 0003565782 |
| Record Updated | Oct 29, 2026 |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Jul 27, 2021 |
| Property Address | 2457 20TH ST, BOULDER, CO 80304-3653 |
| Document Number | 0003902826 |
| Instrument Date | Jul 6, 2021 |
| Instrument | 3902826 |
| Transaction Type | Transfer |
| Record Updated | Apr 15, 2022 |
| Title Company | FIRST AMERICAN |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $90.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 2447 20TH ST, BOULDER, CO 80304-3653 |
| Document Number | 0003902827 |
|---|---|
| Date | Jul 27, 2021 |
| Instrument | 3902827 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Aug 1, 2051 |
| Document Type | Affidavit of Death |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Dec 8, 2017 |
| Property Address | 2457 20TH ST, BOULDER, CO 80304-3653 |
| Document Number | 0003629988 |
| Instrument Date | Nov 16, 2017 |
| Instrument | 3629988 |
| Transaction Type | Transfer |
| Record Updated | Jan 3, 2018 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 1728 E 17TH AVE SPOKANE WA 992033637, SPOKANE, WA 99203-3637 |
Source: Boulder County assessment roll, as of September 18, 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Municipality | Boulder City |
| Unified School District | Boulder Valley School District RE-2 (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $58,480 (+0.61%) Land $50,592 Building $7,888 | $930,000 (-) Land $744,000 Building $186,000 | |
| 2025 | $5,703.00 (-8.16%) | $58,125 (-21.31%) Land $46,500 Building $11,625 | $930,000 (-15.64%) Land $744,000 Building $186,000 |
| 2023 | $6,210.00 (+5.33%) | $73,864 (+19.37%) Land $64,648 Building $9,216 | $1,102,451 (+21.15%) Land $964,900 Building $137,551 |
| 2022 | $5,896.00 | $61,880 Land $49,620 Building $12,260 | $910,000 Land $729,700 Building $180,300 |
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.
Source: FEMA National Flood Hazard Layer, effective October 14, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 31 policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 31 in force |
| Nearby Flood Claims | 5 (2013) |
| Claims Outside the SFHA | 2 of 5 |
| Most Recent Claim | Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides |
| Claims by Event |
|
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | CITY OF BOULDER serves 166,080 people · EPA ID CO0107152 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Sep 2024 |
| Lead | 2 ppb (2023–2025) action level 15 ppb |
| Water Quality | Haloacetic acids resolved · Jul 2017 |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 1 last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 544 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Ayva Networks Fixed Wireless | 2,500 / 2,500 |
| CenturyLink Fiber | 2,000 / 1,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| LiveWireNet Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: AT&T.
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