San Mateo County property record for 501 E 40th Ave, San Mateo, CA 94403
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 860 sqft · built 1950 |
| Lot Size | 0.126 acres (5,500 sqft) |
| Owner | 2 Company Names on Record |
| Tax Bill | $7,246 (2025) |
| Deeds & Mortgages | Nov 2021 Mortgage Nov 2021 Transfer + 1 more |
| Flood Zone | Zone X (reduced by levee) |
| APN | 040-224-050 |
| Primary APN | 040-224-050 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 4 Rooms |
| Stories | 1 Story |
| Building Area | 860 sqft Living Area |
| 1st Floor Area | 860 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | Ranch |
| Exterior Material | Stucco |
| Roof Material | Composition Shingle |
| Lot Area | 5,500 sqft (0.126 acres) |
| Lot Dimensions | 100 ft deep x 55 ft wide |
| View / Lot | Corner |
| Garage Area | 260 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 501 E 40TH AVE |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94403-3606 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 12 BLOCK 29 SAN MATEO VILLAGE UNIT NO 4 RSM 31/21 22 CITY OF SAN MATEO |
| Legal Subdivision | SAN MATEO VILLAGE UNIT NO 4 |
| Legal Block | 29 |
| Legal Lot Number | 12 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2001 |
| Census Tract | 608501 |
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 | 501 E 40TH AVE, SAN MATEO, CA 94403-3606 |
| Owner Type | Company |
| Vesting | Trust |
| Date | Document |
|---|---|
| Nov 15, 2021 | Intrafamily Transfer, Transfer · Conventional Mortgage ROCKET MORTGAGE LLC |
| Nov 15, 2021 | Intrafamily Transfer, Transfer AMROCK LLC |
| Feb 8, 2017 | Quit Claim Deed, Transfer Quitclaim |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Nov 8, 2021 |
| Transfer Doc | 0000158527 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Nov 15, 2021 |
| Property Address | 501 E 40TH AVE, SAN MATEO, CA 94403-3606 |
| Document Number | 0000158525 |
| Map Reference | MB 31 PG 21&22 |
| Instrument Date | Nov 8, 2021 |
| Instrument | 2021-158525 |
| Transaction Type | Transfer |
| Record Updated | Dec 3, 2021 |
| Title Company | AMROCK INC, AMROCK LLC |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 501 E 40TH AVE, SAN MATEO, CA 94403-3606 |
| Document Number | 0000158526 |
|---|---|
| Date | Nov 15, 2021 |
| Instrument | 2021-158526 |
| Name | ROCKET MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Dec 1, 2051 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Nov 15, 2021 |
| Property Address | 501 E 40TH AVE, SAN MATEO, CA 94403-3606 |
| Document Number | 0000158527 |
| Map Reference | MB 31 PG 21&22 |
| Instrument Date | Nov 8, 2021 |
| Instrument | 2021-158527 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Title Company | AMROCK LLC |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Living Trust |
| Address | 501 E 40TH AVE, SAN MATEO, CA 94403-3606 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Feb 8, 2017 |
| Property Address | 501 E 40TH AVE, SAN MATEO, CA 94403-3606 |
| Document Number | 0000012306 |
| Instrument Date | Feb 8, 2017 |
| Instrument | 12306 |
| Transaction Type | Transfer |
| Record Updated | Mar 3, 2017 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Living Trust |
| Address | 501 E 40TH AVE SAN MATEO CA 944033606, SAN MATEO, CA 94403-3606 |
Source: San Mateo County assessment roll, as of July 15, 2026
| Type | Name |
|---|---|
| State | California |
| County | San Mateo County |
| Municipality | San Mateo City |
| Elementary School District | San Mateo-Foster City 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 | $427,904 (+2%) Land $213,952 Building $213,952 | ||
| 2025 | $7,246.00 (+12.74%) | $419,514 (+4.04%) Land $209,757 Building $209,757 | |
| 2023 | $6,427.00 (-0.8%) | $403,226 Land $201,613 Building $201,613 | $1,324,530 |
| 2022 | $6,479.00 |
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 reduced by levee · depends on levee performance |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 8 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 99.1% of the US · lower than 99.2% of California |
|---|---|
| Wildfire Likelihood | Under 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 | CALIFORNIA WATER SERVICE - SAN MATEO private · serves 103,536 people · EPA ID CA4110008 |
|---|---|
| Water Source | Purchased surface water from SAN FRANCISCO REGIONAL WATER SYSTEM |
| Last State Inspection | Mar 2025 |
| Lead | 4 ppb (2023–2025) 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 605 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless, DSL 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: Astound Broadband, GeoLinks.
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