San Mateo County property record for 1848 Byron Ave, San Mateo, CA 94401
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,650 sqft · built 1952 |
| Lot Size | 0.115 acres (5,000 sqft) |
| Owner | 2 Company Names on Record |
| Tax Bill | $4,523 (2025) |
| Deeds & Mortgages | Apr 2019 Mortgage Apr 2019 Line of Credit |
| Flood Zone | Zone X (reduced by levee) |
| APN | 033-374-070 |
| Primary APN | 033-374-070 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,650 sqft Living Area |
| 1st Floor Area | 1,000 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1952 |
|---|---|
| Effective Year Built | Effective 1952 |
| Architectural Style | Ranch |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Material | Composition Shingle |
| Lot Area | 5,000 sqft (0.115 acres) |
| Lot Dimensions | 100 ft deep x 50 ft wide |
| Garage Area | 250 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 1848 BYRON AVE |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94401-3404 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R106 |
| Legal Description | LOT 7 BLOCK 11 SHORE VIEW TRACT MAP NO 9 RSM 31/34 35 36 37 CITY OF SAN MATEO |
| Legal Subdivision | SHORE VIEW TRACT MAP NO 9 |
| Legal Block | 11 |
| Legal Lot Number | 7 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 1 |
| Census Block | 1006 |
| Census Tract | 607701 |
Source: San Mateo County records, as of July 15, 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 Company Names on Record |
|---|---|
| Mailing Address | 1848 BYRON AVE, SAN MATEO, CA 94401-3404 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Date | Document |
|---|---|
| Apr 23, 2019 | Deed of Trust, Mortgage · Conventional Mortgage SAN FRANCISCO POLICE CU |
| Apr 23, 2019 | Deed of Trust, Mortgage · Line of Credit SAN FRANCISCO POLICE CU |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Aug 8, 2012 |
| Transfer Doc | 0000113169 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 1848 BYRON AVE, SAN MATEO, CA 94401-3404 |
| Document Number | 0000031175 |
| Instrument Date | Apr 23, 2019 |
| Transaction Type | Mortgage |
| Record Updated | May 17, 2019 |
| Title Company | FIRST AMERICAN TITLE |
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | PO BOX 1293 MILLBRAE CA 940305293, MILLBRAE, CA 94030-5293 |
| Document Number | 0000031175 |
|---|---|
| Date | Apr 29, 2019 |
| Instrument | 31175 |
| Name | SAN FRANCISCO POLICE CU |
|---|---|
| Type | Credit Union |
| Address | SAN FRANCISCO, CA 94122 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 120 Months |
| Due | Apr 28, 2029 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 1848 BYRON AVE, SAN MATEO, CA 94401-3404 |
| Document Number | 0000033441 |
| Instrument Date | Apr 23, 2019 |
| Transaction Type | Mortgage |
| Record Updated | May 23, 2019 |
| Title Company | NOT AVAILABLE |
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | PO BOX 1293 MILLBRAE CA 940305293, MILLBRAE, CA 94030-5293 |
| Document Number | 0000033441 |
|---|---|
| Date | May 6, 2019 |
| Instrument | 33441 |
| Name | SAN FRANCISCO POLICE CU |
|---|---|
| Type | Credit Union |
| Address | SAN FRANCISCO, CA 94122 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | May 5, 2049 |
| Rate Type | Adjustable Rate |
|---|
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 | $306,241 (+2%) Land $119,720 Building $186,521 | ||
| 2025 | $4,523.00 (+7.21%) Homeowner's exemption | $300,237 (+4.04%) Land $117,373 Building $182,864 | |
| 2023 | $4,219.00 (-1.72%) Homeowner's exemption | $288,580 Land $112,816 Building $175,764 | $1,274,310 |
| 2022 | $4,293.00 |
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 |
| Flood Insurance Cost | Premium on Record median of 12 policies |
| Nearby Flood Policies | 12 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 367 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 |
| Astound Broadband Cable | 1,500 / 50 |
| Etheric Networks Fixed Wireless | 250 / 100 |
May also be available: Sail Internet, T-Mobile, Unwired, Verizon.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures