San Mateo County property record for 4020 Edison St, San Mateo, CA 94403
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1.5 ba · 1,890 sqft · built 1940 |
| Lot Size | 0.139 acres (6,059 sqft) |
| Owner | Company Name on File |
| Last Sale | $1,650,000 (Sep 2026) |
| Tax Bill | $4,896 (2025) |
| Deeds & Mortgages | Sep 2026 Sale & Construction Loan Sep 2023 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 042-223-110 |
| Primary APN | 042-223-110 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,890 sqft Living Area |
| Gross Area | 2,220 sqft |
| 1st Floor Area | 1,170 sqft |
| Basement Area | 560 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1940 |
|---|---|
| Effective Year Built | Effective 1940 |
| Lot Area | 6,059 sqft (0.139 acres) |
| Lot Dimensions | 98 ft deep x 60 ft wide |
| Garage Type | Basement |
| Garage Area | 330 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 4020 EDISON ST |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94403-5142 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 11 BLOCK 9 SAN MATEO KNOLLS RSM 22/8 9 CITY OF SAN MATEO |
| Legal Subdivision | SAN MATEO KNOLLS |
| Legal Block | 9 |
| Legal Lot Number | 11 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2004 |
| Census Tract | 607100 |
4020 Edison St is owned by a company that bought it in September 2026.
Source: San Mateo County records, as of October 14, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 1412 LAUREL AVE, MANHATTAN BEACH, CA 90266-4902 |
| Owner Type | Company |
| Vesting | Limited Liability Partnership |
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 |
|---|---|
| Sep 11, 2026 | Grant Deed, Transfer · Construction Mortgage FIRST AMERICAN TITLE |
| Sep 28, 2023 | Intrafamily Transfer, Transfer |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Sep 11, 2026 · Amount on File |
| Deed Sale | Sep 11, 2026 · Amount on File |
| Deed Document Number | 202651697 |
| Prior Transfer Date | Mar 16, 2009 |
| Prior Transfer Doc | 0000030321 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Sep 11, 2026 |
| Property Address | 4020 EDISON ST, SAN MATEO, CA 94403-5142 |
| Document Number | 0000051697 |
| Instrument Date | Sep 1, 2026 |
| Instrument | 202651697 |
| Transaction Type | Transfer |
| Record Updated | Oct 13, 2026 |
| Title Company | FIRST AMERICAN TITLE |
| Amount | Amount on Record |
|---|---|
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $183,315.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Limited Liability Partnership |
| Address | 1412 LAUREL AVE, MANHATTAN BEACH, CA 90266-4902 |
| Investor | Possibly a Property Investor |
| Document Number | 0000051698, |
|---|---|
| Date | Sep 11, 2026 |
| Instrument | 202651698 |
| Type | Construction Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 12 Months |
| Due | Oct 1, 2027 |
| Max Rate | -1% |
|---|
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Sep 28, 2023 |
| Property Address | 4020 EDISON ST, SAN MATEO, CA 94403-5142 |
| Document Number | 0000047523 |
| Map Reference | MB 22 PG 8&9 |
| Instrument Date | Sep 18, 2023 |
| Instrument | 2023-047523 |
| Transaction Type | Transfer |
| Record Updated | Oct 25, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | PO BOX 411, SAN MATEO, CA 94401-0411 |
The 2025 property tax bill for 4020 Edison St was $4,896.
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 | $325,282 (+2%) Land $155,424 Building $169,858 | ||
| 2025 | $4,896.00 Homeowner's exemption | $318,905 Land $152,377 Building $166,528 | |
| 2023 | $4,616.00 (-19.47%) Homeowner's exemption | $306,523 Land $146,461 Building $160,062 | $1,115,370 |
| 2022 | $5,732.00 |
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.
FEMA maps place 4020 Edison St in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective September 10, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
The area around 4020 Edison St has no burnable land within ember reach, so its wildfire risk is not rated.
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 785 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 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
May also be available: GeoLinks, T-Mobile.
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