Boulder County property record for 4205 Aurora Ave, Boulder, CO 80303
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.25 ba · 1,313 sqft · built 1965 |
| Lot Size | 0.175 acres (7,623 sqft) |
| Owner | Individual Name on File |
| Last Sale | $791,000 (Jul 2021) |
| Tax Bill | $5,219 (2025) |
| Deeds & Mortgages | Jul 2021 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 1463-33-3-11-004 |
| Primary APN | 1463-33-3-11-004 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.25 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Building Area | 1,313 sqft Living Area |
| Gross Area | 1,601 sqft |
| 1st Floor Area | 929 sqft |
| Basement Area | 384 sqft |
| Finished Basement | 384 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1965 |
|---|---|
| Effective Year Built | Effective 1993 |
| Architectural Style | Split Level |
| Exterior Material | Brick Veneer |
| Construction Type | Masonry / Concrete Block |
| Roof Material | Asphalt |
| Lot Area | 7,623 sqft (0.175 acres) |
| Garage Type | Attached |
| Garage Area | 288 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Porch |
| Porch Area | 200 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0010157 |
|---|---|
| Street Address | 4205 AURORA AVE |
| City | BOULDER |
| State | CO |
| Zip | 80303-2537 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 4 BLK 4 PARK EAST |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 33 |
| Legal Subdivision | PARK EAST - BO |
| Legal Block | 4 |
| Legal Lot Number | 4 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 12608 |
4205 Aurora Ave is owned and occupied by an individual who bought it in July 2021.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 4205 AURORA AVE, BOULDER, CO 80303-2537 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Sole Owner |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jul 1, 2021 · Amount on File |
| Deed Sale | Jul 1, 2021 · Amount on File |
| Prior Sale | Jul 12, 2006 · Amount on File |
| Deed Document Number | 20213897126 |
| Record Updated | Oct 29, 2026 |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Jul 1, 2021 |
| Property Address | 4205 AURORA AVE, BOULDER, CO 80303-2537 |
| Document Number | 0003897126 |
| Instrument Date | Jun 24, 2021 |
| Instrument | 3897126 |
| Transaction Type | Transfer |
| Record Updated | Jul 16, 2021 |
| Title Company | HERITAGE TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $79.10 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Tenants in Severalty |
| Address | 4205 AURORA AVE, BOULDER, CO 80303-2537 |
| Document Number | 0003897127 |
|---|---|
| Date | Jul 1, 2021 |
| Instrument | 3897127 |
| Name | ELEVATIONS CU |
|---|---|
| Type | Credit Union |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Jul 1, 2051 |
The 2025 property tax bill for 4205 Aurora Ave was $5,219.
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 | $53,876 (-0.03%) Land $31,266 Building $22,610 | $862,300 (-) Land $529,800 Building $332,500 | |
| 2025 | $5,219.00 | $53,894 Land $33,113 Building $20,781 | $862,300 Land $529,800 Building $332,500 |
| 2023 | $5,059.00 (+32.57%) | $62,276 (+51.54%) Land $38,833 Building $23,443 | $929,500 (+57.2%) Land $579,600 Building $349,900 |
| 2022 | $3,816.00 | $41,095 Land $27,876 Building $13,219 | $591,300 Land $401,100 Building $190,200 |
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 4205 Aurora Ave in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
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 File median of 42 policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 42 in force |
| Nearby Flood Claims | 8 (2013) |
| Claims Outside the SFHA | 6 of 8 |
| Most Recent Claim | Oct 2013 · other causes |
| 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.
The area around 4205 Aurora Ave has no burnable land within ember reach, so its wildfire risk is not rated.
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 584 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 |
May also be available: T-Mobile.
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