Boulder County property record for 510 S 43rd St, Boulder, CO 80305
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.5 ba · 2,080 sqft · built 1959 |
| Lot Size | 0.166 acres (7,233 sqft) |
| Owner | Individual Name on Record |
| Tax Bill | $4,108 (2025) |
| Deeds & Mortgages | Mar 2023 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 1577-08-1-04-001 |
| Primary APN | 1577-08-1-04-001 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 2,080 sqft Living Area |
| Gross Area | 2,355 sqft |
| 1st Floor Area | 1,040 sqft |
| Basement Area | 1,040 sqft |
| Finished Basement | 1,040 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1959 |
|---|---|
| Effective Year Built | Effective 1959 |
| Architectural Style | Ranch |
| Exterior Material | Brick Veneer |
| Construction Type | Masonry / Concrete Block |
| Lot Area | 7,233 sqft (0.166 acres) |
| Garage Type | Attached |
| Garage Area | 275 sqft |
| Parking Spaces | 1 Parking Space |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0012726 |
|---|---|
| Street Address | 510 S 43RD ST |
| City | BOULDER |
| State | CO |
| Zip | 80305-6010 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 1 BLK 4 MARTIN ACRES 3 |
| Legal Range | 70 |
| Legal Township | 1S |
| Legal Section | 05 |
| Legal Subdivision | MARTIN ACRES 3 - BO |
| Legal Block | 4 |
| Legal Lot Number | 1 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 3 |
| Census Block | 3002 |
| Census Tract | 12508 |
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 | Individual Name on Record |
|---|---|
| Mailing Address | 510 S 43RD ST, BOULDER, CO 80305-6010 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Apr 29, 1993 |
| Deed Sale | Apr 29, 1993 |
| Prior Sale | Feb 20, 1990 |
| Deed Document Number | 19931287362 |
| Last Transfer Date | May 4, 2005 |
| Transfer Doc | 0002687221 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 510 S 43RD ST, BOULDER, CO 80305-6010 |
| Transaction Type | Mortgage |
| Record Updated | Mar 22, 2023 |
| Name | Verified Name |
|---|
| Document Number | 0004000334 |
|---|---|
| Date | Mar 16, 2023 |
| Instrument | 4000334 |
| Name | ELEVATIONS CU |
|---|---|
| Type | Credit Union |
| Address | BOULDER, CO 80301 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 240 Months |
| Due | Mar 15, 2043 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
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 | $42,191 (-2.08%) Land $23,913 Building $18,278 | $689,400 (-) Land $420,600 Building $268,800 | |
| 2025 | $4,108.00 (+1.51%) | $43,088 (-13.38%) Land $26,288 Building $16,800 | $689,400 (-7.14%) Land $420,600 Building $268,800 |
| 2024 | $4,047.00 (+1.76%) | ||
| 2023 | $3,977.00 (+11.62%) | $49,741 (+29.61%) Land $31,249 Building $18,492 | $742,400 (+34.44%) Land $466,400 Building $276,000 |
| 2022 | $3,563.00 | $38,378 Land $23,359 Building $15,019 | $552,200 Land $336,100 Building $216,100 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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 |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 5 in force |
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 | Low lower than 67% of the US · lower than 84% of Colorado |
|---|---|
| Wildfire Likelihood | 0.04% annual chance |
| Exposure | Indirect 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 678 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 · DSL in parts of the area | 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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