San Mateo County property record for 423 Sonora Ave, El Granada, CA 94018
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,540 sqft · built 1997 |
| Lot Size | 0.111 acres (4,829 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $335,000 (Aug 1997) |
| Tax Bill | $7,535 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 047-062-180 |
| Primary APN | 047-062-180 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,540 sqft Living Area |
| 1st Floor Area | 1,540 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1997 |
|---|---|
| Effective Year Built | Effective 1997 |
| Architectural Style | Ranch |
| Exterior Material | Wood Siding |
| Roof Material | Composition Shingle |
| Lot Area | 4,829 sqft (0.111 acres) |
| Lot Dimensions | 6,784 ft deep x 6,784 ft wide |
| Garage Area | 380 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 423 SONORA AVE |
|---|---|
| City | EL GRANADA |
| State | CA |
| Zip | 94018-8042 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 19 BLOCK 67 SUB NO 8 OF GRANADA RSM 6/65 |
| Legal Subdivision | SUB NO 8 OF GRANADA |
| Legal Block | 67 |
| Legal Lot Number | 19 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | HALF MOON BAY |
| Census Block Group | 4 |
| Census Block | 4034 |
| Census Tract | 613502 |
Source: San Mateo County records, as of July 15, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | PO BOX 2824, EL GRANADA, CA 94018-2824 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 29, 1997 · Amount on Record |
| Deed Sale | Aug 29, 1997 · Amount on Record |
| Prior Sale | Jan 7, 1997 · Amount on Record |
| Deed Document Number | 1997107434 |
| Record Updated | Sep 20, 2026 |
Source: San Mateo County assessment roll, as of July 15, 2026
| Type | Name |
|---|---|
| State | California |
| County | San Mateo County |
| Unified School District | Cabrillo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $545,590 (+2%) Land $272,795 Building $272,795 | ||
| 2025 | $7,535.00 (+15.5%) Homeowner's exemption | $534,894 (+4.04%) Land $267,447 Building $267,447 | |
| 2023 | $6,524.00 (+2.74%) Homeowner's exemption | $514,124 Land $257,062 Building $257,062 | $1,172,970 |
| 2022 | $6,350.00 |
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 September 10, 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 Record median of 10 policies |
| Community Rating System | Class 8 (10% premium discount) |
| Nearby Flood Policies | 10 in force |
| Nearby Flood Claims | 2 (1998–2017) |
| Claims Outside the SFHA | 1 of 2 |
| Most Recent Claim | Feb 2017 · Severe Winter Storms, Flooding, And Mudslides |
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 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.01% 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 | COASTSIDE COUNTY WATER DISTRICT serves 19,033 people · EPA ID CA4110011 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jul 2023 |
| Lead | 2 ppb (2022–2024) action level 15 ppb |
| 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 193 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Cruzio Fixed Wireless | 1,000 / 1,000 |
May also be available: AT&T.
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