San Mateo County property record for 803 S Eldorado St, San Mateo, CA 94402
| Property Type | Duplex |
|---|---|
| Details | 6 bd · 3 ba · 2,721 sqft · built 1915 |
| Lot Size | 0.139 acres (6,073 sqft) |
| Owner | 2 Trust Names on File |
| Tax Bill | $10,807 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 033-292-220 |
| Primary APN | 033-292-220 |
|---|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 13 Rooms |
| Units | 4 Units |
| Stories | 1 Story |
| Building Area | 2,721 sqft Living Area |
| 1st Floor Area | 2,721 sqft |
| Year Built | Built 1915 |
|---|---|
| Effective Year Built | Effective 1915 |
| Architectural Style | Duplex Single |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Composition Shingle |
| Lot Area | 6,073 sqft (0.139 acres) |
| Lot Dimensions | 152 ft deep x 40 ft wide |
| Street Address | 803 S ELDORADO ST |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94402-1405 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | RM0000 |
| Legal Description | LOT 8 BLOCK 12 EAST SAN MATEO RSM 5/55 CITY OF SAN MATEO |
| Legal Subdivision | EAST SAN MATEO |
| Legal Block | 12 |
| Legal Lot Number | 8 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 1 |
| Census Block | 1012 |
| Census Tract | 606300 |
803 S Eldorado St, a duplex, is held in a trust since March 2013.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 603 S ELDORADO ST, SAN MATEO, CA 94402-1329 |
| 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.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Mar 8, 2013 |
| Transfer Doc | 0000070101 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 803 S Eldorado St was $10,807.
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 |
|---|---|---|
| 2026 | $556,398 (+2%) Land $194,732 Building $361,666 | |
| 2025 | $10,807.00 | $545,489 Land $190,914 Building $354,575 |
| 2023 | $10,079.00 (-1.67%) | $524,308 Land $183,501 Building $340,807 |
| 2022 | $10,250.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 803 S Eldorado St in Zone X, an area of minimal flood risk.
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 | 5 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.
The area around 803 S Eldorado 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 915 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 |
| Astound Broadband Cable | 1,500 / 50 |
| Sonic Telecom Fiber | 1,000 / 1,000 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks.
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