San Mateo County property record for 520 Johnston St, Half Moon Bay, CA 94019
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 2,410 sqft · built 1960 |
| Lot Size | 0.136 acres (5,920 sqft) |
| Owner | 2 Trust Names on File |
| Tax Bill | $2,836 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 056-175-070 |
| Primary APN | 056-175-070 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 2,410 sqft Living Area |
| 1st Floor Area | 1,580 sqft |
| Basement Area | 830 sqft |
| Finished Basement | 830 sqft |
| Family Room | Family Room |
| Year Built | Built 1960 |
|---|---|
| Effective Year Built | Effective 1960 |
| Lot Area | 5,920 sqft (0.136 acres) |
| Garage Area | 530 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 520 JOHNSTON ST |
|---|---|
| City | HALF MOON BAY |
| State | CA |
| Zip | 94019-1911 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 2 BLOCK 10 REAR 20 FT X 46 FT OF LOT 11 BLOCK 10 SPANISHTOWN |
| Legal Subdivision | SPANISHTOWN |
| Legal Block | 10 |
| Legal Lot Number | 2,11 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | HALF MOON BAY |
| Census Block Group | 4 |
| Census Block | 4014 |
| Census Tract | 613702 |
520 Johnston St is owner-occupied and held in a trust since December 2024.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 520 JOHNSTON ST, HALF MOON BAY, CA 94019-1911 |
| Occupancy | Owner Occupied |
| 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 | Dec 19, 2024 |
| Transfer Doc | 0000069243 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 520 Johnston St was $2,836.
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 | $781,614 (+647.08%) Land $614,647 Building $166,967 | ||
| 2025 | $2,836.00 | $104,622 Land $9,772 Building $94,850 | |
| 2023 | $2,513.00 (+6.3%) | $100,562 Land $9,394 Building $91,168 | $1,840,050 |
| 2022 | $2,364.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 520 Johnston St in Zone X, an area of minimal flood risk.
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 14 policies |
| Nearby Flood Policies | 14 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 520 Johnston St is moderate, ranking above 46% of the US, with a 0.09% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 46% of the US · lower than 72% of California |
|---|---|
| Wildfire Likelihood | 0.09% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 374 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 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless · Fiber in parts of the area | 100 / 20 |
May also be available: T-Mobile.
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