San Mateo County property record for 423 Saint John Ave, Half Moon Bay, CA 94019
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,410 sqft · built 1969 |
| Lot Size | 0.138 acres (6,000 sqft) |
| Owner | 2 Trust Names on File |
| Tax Bill | $4,563 (2025) |
| Deeds & Mortgages | Sep 2019 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 048-293-120 |
| Primary APN | 048-293-120 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,410 sqft Living Area |
| 1st Floor Area | 1,410 sqft |
| Family Room | Family Room |
| Year Built | Built 1969 |
|---|---|
| Effective Year Built | Effective 1969 |
| Lot Area | 6,000 sqft (0.138 acres) |
| Lot Dimensions | 100 ft deep x 60 ft wide |
| Garage Area | 440 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 423 SAINT JOHN AVE |
|---|---|
| City | HALF MOON BAY |
| State | CA |
| Zip | 94019-1422 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 54 KEHOE ESTATES RSM 62/41 42 |
| Legal Subdivision | KEHOE ESTATES |
| Legal Lot Number | 54 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | HALF MOON BAY |
| Census Block Group | 1 |
| Census Block | 1005 |
| Census Tract | 613501 |
423 Saint John Ave is held in a trust since September 2019.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 140 VALLEY RD, SAN CARLOS, CA 94070-1956 |
| Owner Type | Company |
| Vesting | Trust |
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 Transfer Date | Sep 19, 2019 |
| Transfer Doc | 0000080009 |
| Record Updated | Oct 29, 2026 |
| Document Type | Correction Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Sep 27, 2019 |
| Property Address | 423 SAINT JOHN AVE, HALF MOON BAY, CA 94019-1422 |
| Document Number | 0000080009 |
| Instrument Date | Sep 19, 2019 |
| Instrument | 80009 |
| Record Updated | Oct 14, 2019 |
| Title Company | ATTORNEY ONLY |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 140 VALLEY RD SAN CARLOS CA 940701956, SAN CARLOS, CA 94070-1956 |
The 2025 property tax bill for 423 Saint John Ave was $4,563.
Source: San Mateo County assessment roll, as of July 15, 2026
| Type | Name |
|---|---|
| State | California |
| County | San Mateo County |
| Municipality | Half Moon Bay City |
| Unified School District | Cabrillo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $258,612 (+2%) Land $86,192 Building $172,420 | ||
| 2025 | $4,563.00 | $253,542 Land $84,502 Building $169,040 | |
| 2023 | $4,077.00 (+4.35%) | $243,699 Land $81,222 Building $162,477 | $1,268,100 |
| 2022 | $3,907.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 423 Saint John Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1998.
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 File median of 12 policies |
| Nearby Flood Policies | 12 in force |
| Nearby Flood Claims | 1 (1998) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Feb 1998 · Severe Winter Storms And Flooding |
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 423 Saint John Ave is low, with a 0.02% 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 88% of California |
|---|---|
| Wildfire Likelihood | 0.02% 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 260 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 |
| Starlink Satellite | 280 / 30 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: AT&T.
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