San Luis Obispo County property record for 4155 Tranquilla Ave, Atascadero, CA 93422
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,320 sqft · built 1954 |
| Lot Size | 0.535 acres (23,300 sqft) |
| Owner | Individual Name on File |
| Last Sale | $143,000 (Aug 1994) |
| Tax Bill | $2,663 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 029-011-023 |
| Primary APN | 029-011-023 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,320 sqft Living Area |
| 1st Floor Area | 1,320 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 1954 |
| Architectural Style | Contemporary |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Material | Composition Shingle |
| Lot Area | 23,300 sqft (0.535 acres) |
| Parking Spaces | 1 Parking Space |
| Cooling System | HVAC |
|---|---|
| Heating System | HVAC |
| Sewer | Connected |
| Street Address | 4155 TRANQUILLA AVE |
|---|---|
| City | ATASCADERO |
| State | CA |
| Zip | 93422-2849 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LSFX |
| Legal Description | CY ATAS ATAS BL NC LT 108 |
| Legal Subdivision | ATASCADERO |
| Legal Block | 3 |
| Legal Lot Number | 108 |
| Jurisdiction | SAN LUIS OBISPO CA |
| Township / Civil Division | ATASCADERO |
| Census Block Group | 3 |
| Census Block | 3006 |
| Census Tract | 12505 |
4155 Tranquilla Ave is owned and occupied by an individual who acquired it in September 1998.
Source: San Luis Obispo County records, as of August 6, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 4155 TRANQUILLA AVE, ATASCADERO, CA 93422-2849 |
| 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 | Name on Deed |
|---|---|
| Last Sale | Aug 29, 1994 · Amount on File |
| Deed Sale | Aug 29, 1994 · Amount on File |
| Deed Document Number | 199450659 |
| Last Transfer Date | Sep 14, 1998 |
| Transfer Doc | 0000063338 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 4155 Tranquilla Ave was $2,663 with a homeowner's exemption.
Source: San Luis Obispo County assessment roll, as of August 6, 2026
| Type | Name |
|---|---|
| State | California |
| Municipality | Atascadero City |
| County | San Luis Obispo County |
| Unified School District | Atascadero Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $244,958 (+2%) Land $119,908 Building $125,050 | |
| 2025 | $2,663.00 Homeowner's exemption | $240,156 Land $117,557 Building $122,599 |
| 2023 | $2,535.00 (+1.32%) Homeowner's exemption | $230,833 Land $112,993 Building $117,840 |
| 2022 | $2,502.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 4155 Tranquilla Ave in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective July 22, 2025 · 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 |
| Nearby Flood Policies | 1 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.
Wildfire risk around 4155 Tranquilla Ave 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 63% of the US · lower than 78% of California |
|---|---|
| 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 | ATASCADERO MUTUAL WATER CO private · serves 33,307 people · EPA ID CA4010002 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Jul 2025 |
| Lead | Under 1 ppb (2026) action level 15 ppb |
| Copper | 1.5 mg/L (2018) action level 1.3 mg/L |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None 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 221 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| Surfnet Communications Fixed Wireless | 100 / 20 |
| Ranch Wifi Fixed Wireless | 100 / 20 |
May also be available: Astound Broadband, GeoLinks, T-Mobile.
5G (outdoors only) and 4G LTE
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