San Mateo County property record for 436 27th Ave, San Mateo, CA 94403
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.5 ba · 1,330 sqft · built 1946 |
| Lot Size | 0.138 acres (6,000 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $1,775,000 (Nov 2021) |
| Tax Bill | $22,059 (2025) |
| Deeds & Mortgages | Nov 2025 Line of Credit Nov 2021 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 039-331-180 |
| Primary APN | 039-331-180 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,330 sqft Living Area |
| 1st Floor Area | 910 sqft |
| Family Room | Family Room |
| Year Built | Built 1946 |
|---|---|
| Effective Year Built | Effective 1946 |
| Lot Area | 6,000 sqft (0.138 acres) |
| Lot Dimensions | 120 ft deep x 50 ft wide |
| Garage Area | 300 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 436 27TH AVE |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94403-2402 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 18 BLOCK 7 SAN MATEO TERRACE MAP NO 3 RSM 21/76 77 CITY OF SAN MATEO |
| Legal Subdivision | SAN MATEO TERRACE MAP NO 3 |
| Legal Block | 7 |
| Legal Lot Number | 18 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 3 |
| Census Block | 3010 |
| Census Tract | 607400 |
436 27th Ave is owner-occupied and held in a trust since November 2021.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 436 27TH AVE, SAN MATEO, CA 94403-2402 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
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 6, 2025 | Deed of Trust, Mortgage · Line of Credit STANFORD FCU |
| Nov 12, 2021 | Grant Deed, Transfer · Conventional Mortgage JPMORGAN CHASE BANK NA |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Nov 12, 2021 · Amount on File |
| Deed Sale | Nov 12, 2021 · Amount on File |
| Deed Document Number | 2021158031 |
| Prior Transfer Date | Jun 8, 2012 |
| Prior Transfer Doc | 0000089457 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 436 27TH AVE, SAN MATEO, CA 94403-2402 |
| Transaction Type | Mortgage |
| Record Updated | Dec 12, 2025 |
| Title Company | ATLANTIS TITLE COMPANY, ATLAS TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 436 27TH AVE, SAN MATEO, CA 94403-2402 |
| Document Number | 0000059421 |
|---|---|
| Date | Nov 6, 2025 |
| Instrument | 2025-059421 |
| Name | STANFORD FCU |
|---|---|
| Type | Credit Union |
| Address | OAKLAND, CA 94603 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Nov 15, 2055 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Nov 12, 2021 |
| Property Address | 436 27TH AVE, SAN MATEO, CA 94403-2402 |
| Document Number | 0000158031 |
| Map Reference | MB 21 PG 76&77 |
| Instrument Date | Nov 9, 2021 |
| Instrument | 2021-158031 |
| Transaction Type | Transfer |
| Record Updated | Dec 2, 2021 |
| Title Company | FIRST AMERICAN TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $10,827.50 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 436 27TH AVE, SAN MATEO, CA 94403-2402 |
| Document Number | 0000158033 |
|---|---|
| Date | Nov 12, 2021 |
| Instrument | 2021-158033 |
| Name | JPMORGAN CHASE BANK NA |
|---|---|
| Type | Bank |
| Address | COLUMBUS, OH 43240 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Dec 1, 2051 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 2.75% |
| Type Change Date | Dec 1, 2028 |
| Change Frequency | 6 Months |
| Min Rate At Change | 2.75% |
| Max Rate At Change | 7.75% |
| Index | Other |
| Max Rate | 7.75% |
The 2025 property tax bill for 436 27th Ave was $22,059 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 | 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 | $1,921,315 (+9.6%) Land $1,574,938 Building $346,377 | ||
| 2025 | $22,059.00 | $1,753,000 Land $1,436,500 Building $316,500 | |
| 2023 | $20,988.00 (-3.21%) | $1,670,000 Land $1,369,000 Building $301,000 | $1,359,450 |
| 2022 | $21,685.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 436 27th 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 | 1 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 436 27th Ave is low, with less than 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 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 799 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 | 1,500 / 50 |
May also be available: Etheric Networks, GeoLinks, T-Mobile, Verizon.
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