San Mateo County property record for 423 Filbert St, Half Moon Bay, CA 94019
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,020 sqft · built 1959 |
| Lot Size | 0.085 acres (3,681 sqft) |
| Owner | Individual Name on File |
| Last Sale | $850,000 (Nov 2020) |
| Tax Bill | $11,926 (2025) |
| Deeds & Mortgages | Nov 2025 Line of Credit Nov 2020 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 064-092-590 |
| Primary APN | 064-092-590 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,020 sqft Living Area |
| 1st Floor Area | 1,020 sqft |
| Family Room | Family Room |
| Year Built | Built 1959 |
|---|---|
| Effective Year Built | Effective 1959 |
| Lot Area | 3,681 sqft (0.085 acres) |
| Lot Dimensions | 129 ft deep x 29 ft wide |
| Garage Area | 200 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 423 FILBERT ST |
|---|---|
| City | HALF MOON BAY |
| State | CA |
| Zip | 94019-1813 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R100B1 |
| Legal Description | LOT 37 BLK 7 & ADJ PTN ALLEY ABAND ARLETA PARK 2ND ADDN RSM 4/36 |
| Legal Subdivision | ARLETA PARK 2ND ADDN |
| Legal Block | 7 |
| Legal Lot Number | 37 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | HALF MOON BAY |
| Census Block Group | 1 |
| Census Block | 1022 |
| Census Tract | 613701 |
423 Filbert St is owned and occupied by an individual who bought it in November 2020.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 423 FILBERT ST, HALF MOON BAY, CA 94019-1813 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Nov 12, 2025 | Deed of Trust, Mortgage · Line of Credit TRI COUNTIES BANK |
| Nov 4, 2020 | Grant Deed, Transfer · Conventional Mortgage WELLS FARGO BANK NA |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Nov 4, 2020 · Amount on File |
| Deed Sale | Nov 4, 2020 · Amount on File |
| Prior Sale | Jan 22, 2009 · Amount on File |
| Deed Document Number | 2020122965 |
| Prior Transfer Date | Apr 5, 2006 |
| Prior Transfer Doc | 0000061090 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 423 FILBERT ST, HALF MOON BAY, CA 94019-1813 |
| Transaction Type | Mortgage |
| Record Updated | Dec 12, 2025 |
| Name | Verified Name |
|---|---|
| Address | 423 FILBERT ST, HALF MOON BAY, CA 94019-1813 |
| Document Number | 0000060322 |
|---|---|
| Date | Nov 12, 2025 |
| Instrument | 2025-060322 |
| Name | TRI COUNTIES BANK |
|---|---|
| Type | Bank |
| Address | HALF MOON BAY, CA 94019 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Nov 4, 2020 |
| Property Address | 423 FILBERT ST, HALF MOON BAY, CA 94019-1813 |
| Document Number | 0000122965 |
| Map Reference | MB C PG 24 |
| Instrument Date | Oct 25, 2020 |
| Instrument | 2020-122965 |
| Transaction Type | Transfer |
| Record Updated | Aug 9, 2021 |
| Title Company | FIRST AMERICAN TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $935.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 423 FILBERT ST, HALF MOON BAY, CA 94019-1813 |
| Document Number | 0000122966 |
|---|---|
| Date | Nov 4, 2020 |
| Instrument | 2020-122966 |
| Name | WELLS FARGO BANK NA |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Dec 1, 2050 |
The 2025 property tax bill for 423 Filbert St was $11,926.
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 | $898,449 (+1.14%) Land $515,603 Building $382,846 | ||
| 2025 | $11,926.00 | $888,340 Land $505,494 Building $382,846 | |
| 2023 | $11,082.00 (+2.48%) | $884,339 Land $485,866 Building $398,473 | $1,107,270 |
| 2022 | $10,814.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 423 Filbert 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 |
| 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.
Wildfire risk around 423 Filbert St is low, with a 0.01% 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 | 0.01% 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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