Boulder County property record for 4305 Martin Dr, Boulder, CO 80305
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.75 ba · 1,679 sqft · built 1956 |
| Lot Size | 0.166 acres (7,243 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $77,300 (Jul 1989) |
| Tax Bill | $3,830 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1577-05-4-29-004 |
| Primary APN | 1577-05-4-29-004 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,679 sqft Living Area |
| Gross Area | 1,899 sqft |
| 1st Floor Area | 1,679 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1956 |
|---|---|
| Effective Year Built | Effective 1965 |
| Architectural Style | Ranch |
| Exterior Material | Brick Veneer |
| Construction Type | Masonry / Concrete Block |
| Roof Material | Asphalt |
| Lot Area | 7,243 sqft (0.166 acres) |
| Garage Type | Attached |
| Garage Area | 220 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Porch |
|---|---|
| Porch Area | 62 sqft |
| Deck Area | 170 sqft |
| Shed | 1 Shed |
| Total Buildings | 2 Buildings |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0011323 |
|---|---|
| Street Address | 4305 MARTIN DR |
| City | BOULDER |
| State | CO |
| Zip | 80305-6001 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 4 BLK 12 MARTIN ACRES 2 |
| Legal Range | 70 |
| Legal Township | 1S |
| Legal Section | 05 |
| Legal Subdivision | MARTIN ACRES 2 - BO |
| Legal Block | 12 |
| Legal Lot Number | 4 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 1 |
| Census Block | 1025 |
| Census Tract | 12507 |
4305 Martin Dr is owned and occupied by two individuals who bought it in July 1989.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 4305 MARTIN DR, BOULDER, CO 80305-6001 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
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 | 2 Names on Deed |
|---|---|
| Last Sale | Jul 28, 1989 · Amount on File |
| Deed Sale | Jul 28, 1989 · Amount on File |
| Prior Sale | Nov 9, 1983 · Amount on File |
| Deed Document Number | 1989994970 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 4305 Martin Dr was $3,830.
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 | $45,750 (-1.45%) Land $30,252 Building $15,498 | $742,800 (-) Land $514,900 Building $227,900 | |
| 2025 | $3,830.00 | $46,425 Land $32,181 Building $14,244 | $742,800 Land $514,900 Building $227,900 |
| 2023 | $3,647.00 (+13.26%) | $52,622 (+26.41%) Land $37,520 Building $15,102 | $785,400 (+31.12%) Land $560,000 Building $225,400 |
| 2022 | $3,220.00 | $41,629 Land $27,981 Building $13,648 | $598,980 Land $402,600 Building $196,380 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 4305 Martin Dr in Zone X, an area of minimal flood risk, though there have been 16 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 25 policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 25 in force |
| Nearby Flood Claims | 16 (1995–2013) |
| Claims Outside the SFHA | 2 of 16 |
| 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.
Wildfire risk around 4305 Martin Dr is low, with a 0.03% 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 | 0.03% 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 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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