San Mateo County property record for 323 S Ashton Ave, Millbrae, CA 94030
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3 ba · 2,680 sqft · built 1956 |
| Lot Size | 0.288 acres (12,536 sqft) |
| Owner | Individual Name on File |
| Last Sale | $1,080,000 (Mar 2004) |
| Tax Bill | $19,619 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 025-091-060 |
| Primary APN | 025-091-060 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 2,680 sqft Living Area |
| 1st Floor Area | 1,440 sqft |
| Family Room | Family Room |
| Year Built | Built 1956 |
|---|---|
| Effective Year Built | Effective 1956 |
| Lot Area | 12,536 sqft (0.288 acres) |
| Lot Dimensions | 179 ft deep x 70 ft wide |
| Garage Area | 400 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 323 S ASHTON AVE |
|---|---|
| City | MILLBRAE |
| State | CA |
| Zip | 94030-3034 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 21 BLOCK 23 MILLS ESTATE NO 6 RSM 42/43 CITY OF MILLBRAE |
| Legal Subdivision | MILLS ESTATE NO 6 |
| Legal Block | 23 |
| Legal Lot Number | 21 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SOUTH SAN FRANCISCO |
| Census Block Group | 1 |
| Census Block | 1012 |
| Census Tract | 604900 |
323 S Ashton Ave is owned and occupied by an individual who bought it in March 2004.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 323 S ASHTON AVE, MILLBRAE, CA 94030-3034 |
| 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.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Mar 18, 2004 · Amount on File |
| Deed Sale | Mar 18, 2004 · Amount on File |
| Prior Sale | Sep 10, 1999 · Amount on File |
| Deed Document Number | 200449127 |
| Prior Transfer Date | Feb 9, 1994 |
| Prior Transfer Doc | 0000090919 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 323 S Ashton Ave was $19,619 with a homeowner's exemption.
Source: San Mateo County assessment roll, as of July 15, 2026
| Type | Name |
|---|---|
| State | California |
| County | San Mateo County |
| Municipality | Millbrae City |
| Elementary School District | Millbrae Elementary School District (KG - 08) |
| Secondary School District | San Mateo Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $1,628,946 (+2%) Land $783,116 Building $845,830 | ||
| 2025 | $19,619.00 Homeowner's exemption | $1,597,007 Land $767,761 Building $829,246 | |
| 2023 | $18,600.00 (+9.6%) Homeowner's exemption | $1,534,997 Land $737,949 Building $797,048 | $2,153,070 |
| 2022 | $16,971.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 323 S Ashton Ave in Zone X, an area of minimal flood risk, though there have been 4 flood claims nearby since 1978.
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 | 2 in force |
| Nearby Flood Claims | 4 (1978–1986) |
| Most Recent Claim | Feb 1986 · Severe Storms & 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 323 S Ashton Ave 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 | CITY OF MILLBRAE serves 22,795 people · EPA ID CA4110018 |
|---|---|
| Water Source | Purchased surface water from SAN FRANCISCO REGIONAL WATER SYSTEM |
| Last State Inspection | Apr 2025 |
| Lead | Under 1 ppb (2023–2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 1 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 383 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures