San Mateo County property record for 845 4th Ave, Half Moon Bay, CA 94019
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,900 sqft · built 1970 |
| Lot Size | 0.169 acres (7,361 sqft) |
| Owner | 2 Companies on Record |
| Tax Bill | $3,041 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 064-142-160 |
| Primary APN | 064-142-160 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,900 sqft Living Area |
| 1st Floor Area | 1,900 sqft |
| Family Room | Family Room |
| Year Built | Built 1970 |
|---|---|
| Effective Year Built | Effective 1970 |
| Lot Area | 7,361 sqft (0.169 acres) |
| Lot Dimensions | 129 ft deep x 57 ft wide |
| View / Lot | Corner |
| Garage Area | 1,190 sqft |
| Parking Spaces | 4 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 845 FOURTH AVE |
|---|---|
| City | HALF MOON BAY |
| State | CA |
| Zip | 94019-2161 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R20000 |
| Legal Description | LOTS 1 & 2 BLK 13 & ADJ PTN ALLEY ABAND 2ND ADDN TO ARLETA PARK RSM 4/36 |
| Legal Subdivision | ARLETA PARK |
| Legal Block | 13 |
| Legal Lot Number | 1,2 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | HALF MOON BAY |
| Census Block Group | 3 |
| Census Block | 3012 |
| Census Tract | 613702 |
Source: San Mateo County assessment roll, 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 Companies on Record |
|---|---|
| Mailing Address | 830 FOURTH AVE, HALF MOON BAY, CA 94019-2162 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Jun 5, 2024 |
| Transfer Doc | 0000030389 |
| Record Updated | Sep 20, 2026 |
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 |
|---|---|---|
| 2026 | $124,736 (+2%) Land $12,480 Building $112,256 | |
| 2025 | $3,041.00 (+12.71%) | $122,291 (+4.04%) Land $12,236 Building $110,055 |
| 2023 | $2,698.00 (+5.93%) | $117,545 Land $11,762 Building $105,783 |
| 2022 | $2,547.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
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 | 3 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 65% of the US · lower than 79% of California |
|---|---|
| Wildfire Likelihood | 0.05% 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 335 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, Verizon.
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