San Mateo County property record for 509 Ocean Ave, Half Moon Bay, CA 94019
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.5 ba · 3,160 sqft · built 1989 |
| Lot Size | 0.172 acres (7,500 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $2,650,000 (Nov 2023) |
| Tax Bill | $18,400 (2025) |
| Deeds & Mortgages | Sep 2018 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 056-103-170 |
| Primary APN | 056-103-170 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 3 Stories |
| Building Area | 3,160 sqft Living Area |
| Gross Area | 3,570 sqft |
| 1st Floor Area | 1,280 sqft |
| 2nd Floor Area | 1,250 sqft |
| Basement Area | 410 sqft |
| Family Room | Family Room |
| Year Built | Built 1989 |
|---|---|
| Effective Year Built | Effective 1989 |
| Lot Area | 7,500 sqft (0.172 acres) |
| Lot Dimensions | 150 ft deep x 50 ft wide |
| Garage Type | Basement |
| Garage Area | 410 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 509 OCEAN AVE |
|---|---|
| City | HALF MOON BAY |
| State | CA |
| Zip | 94019-2403 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 18 BLK 3 MIRAMONTES TRACT RSM 3/83 |
| Legal Subdivision | MIRAMONTES TR |
| Legal Block | 3 |
| Legal Lot Number | 18 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | HALF MOON BAY |
| Census Block Group | 1 |
| Census Block | 1005 |
| Census Tract | 613701 |
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 Company Names on Record |
|---|---|
| Mailing Address | 225 CABRILLO HWY S, 110D, HALF MOON BAY, CA 94019-1738 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Nov 15, 2023 · Amount on Record |
| Deed Sale | Nov 15, 2023 · Amount on Record |
| Prior Sale | Sep 21, 2018 · Amount on Record |
| Deed Document Number | 202360737 |
| Prior Transfer Date | Feb 28, 2008 |
| Prior Transfer Doc | 0000025416 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Sep 21, 2018 |
| Property Address | 509 OCEAN AVE, HALF MOON BAY, CA 94019-2403 |
| Document Number | 0000074042 |
| Instrument Date | Sep 13, 2018 |
| Instrument | 74042 |
| Transaction Type | Transfer |
| Record Updated | Nov 22, 2018 |
| Title Company | NORTH AMERICAN TITLE |
| Amount | Amount Recorded |
|---|---|
| Tax | $1,947.00 |
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 1550 VALPARAISO AVE MENLO PARK CA 94025, MENLO PARK, CA 94025 |
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 | $1,482,648 (+2%) Land $883,632 Building $599,016 | ||
| 2025 | $18,400.00 (-16.98%) Homeowner's exemption | $1,453,579 (-23.41%) Land $866,307 Building $587,272 | |
| 2023 | $22,162.00 (+1.94%) | $1,897,795 Land $1,072,201 Building $825,594 | $2,311,560 |
| 2022 | $21,741.00 |
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 |
| Nearby Flood Policies | 7 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 66% of the US · lower than 80% 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 | 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 642 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Cruzio Fixed Wireless | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: T-Mobile.
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