San Mateo County property record for 503 30th Ave, San Mateo, CA 94403
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.5 ba · 1,840 sqft · built 1941 |
| Lot Size | 0.125 acres (5,443 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $2,400,000 (Jun 2026) |
| Tax Bill | $22,973 (2025) |
| Deeds & Mortgages | Jun 2026 Sale & Mortgage Dec 2025 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 039-302-180 |
| Primary APN | 039-302-180 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Building Area | 1,840 sqft Living Area |
| Gross Area | 2,090 sqft |
| 1st Floor Area | 1,250 sqft |
| 2nd Floor Area | 320 sqft |
| Basement Area | 520 sqft |
| Family Room | Family Room |
| Year Built | Built 1941 |
|---|---|
| Effective Year Built | Effective 1941 |
| Lot Area | 5,443 sqft (0.125 acres) |
| Lot Dimensions | 108 ft deep x 50 ft wide |
| Garage Type | Basement |
| Garage Area | 250 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 503 30TH AVE |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94403-3203 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 11 BLOCK 17 SAN MATEO TERRACE MAP NO 5 RSM 22/35 CITY OFSAN MATEO |
| Legal Subdivision | SAN MATEO TERRACE MAP NO 5 |
| Legal Block | 17 |
| Legal Lot Number | 11 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 607300 |
Source: San Mateo County records, as of October 13, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 503 30TH AVE, SAN MATEO, CA 94403-3203 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Husband and Wife |
| Date | Document |
|---|---|
| Jun 22, 2026 | Grant Deed, Transfer · Conventional Mortgage JPMORGAN CHASE BANK |
| Dec 12, 2025 | Deed of Trust, Mortgage · Commercial Mortgage ANCHOR LOANS INC |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jun 22, 2026 · Amount on Record |
| Deed Sale | Jun 22, 2026 · Amount on Record |
| Prior Sale | Nov 26, 2024 · Amount on Record |
| Deed Document Number | 202635665 |
| Prior Transfer Date | Jul 1, 1999 |
| Prior Transfer Doc | 0000112559 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Jun 22, 2026 |
| Property Address | 503 30TH AVE, SAN MATEO, CA 94403-3203 |
| Document Number | 0000035665 |
| Instrument Date | Jun 18, 2026 |
| Instrument | 202635665 |
| Transaction Type | Transfer |
| Record Updated | Sep 21, 2026 |
| Title Company | OLD REPUBLIC TITLE |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $266,640.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 503 30TH AVE, SAN MATEO, CA 94403-3203 |
| Investor | Possibly a Property Investor |
| Document Number | 0000035666, |
|---|---|
| Date | Jun 22, 2026 |
| Instrument | 202635666 |
| Name | JPMORGAN CHASE BANK |
|---|
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Jul 1, 2056 |
| Rate Type | Fixed Rate |
|---|---|
| Initial Type | Fixed Rate |
| Max Rate | -1% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 503 30TH AVE, SAN MATEO, CA 94403-3203 |
| Transaction Type | Mortgage |
| Record Updated | Jan 2, 2026 |
| Title Company | ORANGE COAST TITLE COMPANY, ORANGE COAST TTL CO OF SOCAL |
| Name | Verified Name |
|---|---|
| Address | 620 JONES ST 1300, 1300, SAN FRANCISCO, CA 94102-1643 |
| Investor | Possibly a Property Investor |
| Document Number | 0000068187 |
|---|---|
| Date | Dec 12, 2025 |
| Instrument | 2025-068187 |
| Name | ANCHOR LOANS INC |
|---|---|
| Type | Mortgage Company |
| Address | THOUSAND OAKS, CA 91362 |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 13 Months |
| Due | Jan 1, 2027 |
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 | $1,943,100 (+2%) Land $1,642,200 Building $300,900 | ||
| 2025 | $22,973.00 (+714.07%) | $1,905,000 (+1,488.36%) Land $1,610,000 Building $295,000 | |
| 2023 | $2,822.00 (+1.4%) | $119,935 Land $35,330 Building $84,605 | $2,002,320 |
| 2022 | $2,783.00 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
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 | 2 (2009–2017) |
| Claims Outside the SFHA | 2 of 2 |
| Most Recent Claim | Jan 2017 · Severe Winter Storms, Flooding, And Mudslides |
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 | Not rated no burnable land 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 | 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 732 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable · Fiber in parts of the area | 1,500 / 50 |
May also be available: Etheric Networks, T-Mobile.
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