Boulder County property record for 3515 28th St, Apt 307, Boulder, CO 80301
| Property Type | Condominium |
|---|---|
| Details | 1 bd · 1 ba · 748 sqft · built 1983 |
| Lot Size | 0.001 acres (25 sqft) |
| Owner | Individual Name on File |
| Last Sale | $374,000 (Feb 2022) |
| Tax Bill | $1,920 (2025) |
| Deeds & Mortgages | Feb 2022 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 1463-20-2-46-021 |
| Primary APN | 1463-20-2-46-021 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 1 Bed |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 4 Rooms |
| Stories | 1 Story |
| Building Area | 748 sqft Living Area |
| 1st Floor Area | 748 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1983 |
|---|---|
| Effective Year Built | Effective 1983 |
| Architectural Style | Condo/Apartment |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Lot Area | 25 sqft (0.001 acres) |
| Heating System | Hot Water |
|---|
| Account Number | R0095133 |
|---|---|
| Street Address | 3515 28TH ST, 307 |
| City | BOULDER |
| State | CO |
| Zip | 80301-1562 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Condominium |
| Legal Description | UNIT 307 BLDG 1 & UND 1/22 INT GCE PENDLETON SQUARE CONDOS 1 |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 20 |
| Legal Subdivision | PENDLETON SQUARE CONDOS PHASE I - BO |
| Legal Block | 3 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 3 |
| Census Block | 3009 |
| Census Tract | 12103 |
3515 28th St, Apt 307 is owned and occupied by an individual who bought it in February 2022.
Source: Boulder County records, as of September 18, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 3515 28TH ST, 307, BOULDER, CO 80301-1562 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Feb 7, 2022 · Amount on File |
| Deed Sale | Feb 7, 2022 · Amount on File |
| Prior Sale | Feb 2, 2000 · Amount on File |
| Deed Document Number | 20223943689 |
| Prior Transfer Date | Nov 24, 2008 |
| Prior Transfer Doc | 0002968758 |
| Record Updated | Oct 29, 2026 |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Feb 7, 2022 |
| Property Address | 3515 28TH ST APT 307, 307, BOULDER, CO 80301-1562 |
| Document Number | 0003943689 |
| Map Reference | DOC 579192 |
| Instrument Date | Feb 1, 2022 |
| Instrument | 3943689 |
| Transaction Type | Transfer |
| Record Updated | Feb 17, 2022 |
| Title Company | FITCO |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $37.40 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 3515 28TH ST APT 307, 307, BOULDER, CO 80301-1562 |
| Document Number | 0003943690 |
|---|---|
| Date | Feb 7, 2022 |
| Instrument | 3943690 |
| Name | GUARANTEED RATE AFFINITY LLC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Mar 1, 2052 |
The 2025 property tax bill for 3515 28th St, Apt 307 was $1,920.
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 | $18,899 (-2.08%) Building $18,899 | $308,800 (-) Building $308,800 | |
| 2025 | $1,920.00 | $19,300 Building $19,300 | $308,800 Building $308,800 |
| 2023 | $1,443.00 (-15.02%) | $19,536 (+11.77%) Building $19,536 | $291,588 (+15.94%) Building $291,588 |
| 2022 | $1,698.00 | $17,479 Building $17,479 | $251,500 Building $251,500 |
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.
FEMA maps place 3515 28th St, Apt 307 in Zone X, an area of minimal flood risk, though there have been 18 flood claims nearby since 1995.
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 28 individual policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 58 units insured incl. 30 condo units |
| Nearby Flood Claims | 18 (1995–2022) |
| Claims Outside the SFHA | 9 of 18 |
| Most Recent Claim | Oct 2022 · rainfall accumulation |
| 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.
Wildfire risk around 3515 28th St, Apt 307 is low, with a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · lower than 91% of Colorado |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | None beyond 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 288 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Ayva Networks Fixed Wireless | 2,500 / 2,500 |
| Xfinity Cable · Fiber in parts of the area | 2,000 / 250 |
| LiveWireNet Fixed Wireless | 250 / 100 |
| CenturyLink DSL · Fiber in parts of the area | 140 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Verizon.
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