San Mateo County property record for 105 S Delaware St, San Mateo, CA 94401
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.5 ba · 2,810 sqft · built 1916 |
| Lot Size | 0.08 acres (3,475 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $566,000 (Jan 2011) |
| Tax Bill | $13,010 (2025) |
| Deeds & Mortgages | Feb 2021 Mortgage Dec 2025 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 034-163-260 |
| Primary APN | 034-163-260 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,810 sqft Living Area |
| Gross Area | 3,090 sqft |
| 1st Floor Area | 1,560 sqft |
| 2nd Floor Area | 1,250 sqft |
| Basement Area | 280 sqft |
| Family Room | Family Room |
| Year Built | Built 1916 |
|---|---|
| Effective Year Built | Effective 1916 |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Composition Shingle |
| Lot Area | 3,475 sqft (0.08 acres) |
| Lot Dimensions | 95 ft deep x 37 ft wide |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 105 S DELAWARE ST |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94401-3221 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | CH00C3 |
| Legal Description | 36.58 FT X 95 FT ON DELAWARE ST COM 43.62 FT FRM 1ST AVE PTNOF ARB LOTS 7 & 8 BLOCK 28 TOWN OF SAN MATEO VOL 2 MISC PG 95 |
| Legal Subdivision | TOWN OF SAN MATEO |
| Legal Block | 28 |
| Legal Lot Number | 7,8 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 1 |
| Census Block | 1014 |
| Census Tract | 606202 |
105 S Delaware St is owner-occupied and held in a trust since January 2011.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 105 S DELAWARE ST, SAN MATEO, CA 94401-3221 |
| 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 |
|---|---|
| Feb 10, 2021 | Deed of Trust, Mortgage · Conventional Mortgage NMSI INC |
| Dec 5, 2025 | Intrafamily Transfer, Transfer |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jan 28, 2011 · Amount on File |
| Deed Sale | Jan 28, 2011 · Amount on File |
| Prior Sale | Aug 11, 2010 · Amount on File |
| Deed Document Number | 201111796 |
| Prior Transfer Date | Dec 18, 1997 |
| Prior Transfer Doc | 0000000249 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 105 S DELAWARE ST, SAN MATEO, CA 94401-3221 |
| Transaction Type | Mortgage |
| Record Updated | Jun 8, 2026 |
| Title Company | FIDELITY NATIONAL TITLE |
| Name | Verified Name |
|---|---|
| Address | 105 S DELAWARE ST, SAN MATEO, CA 94401-3221 |
| Document Number | 0000022514 |
|---|---|
| Date | Feb 10, 2021 |
| Instrument | 2021-022514 |
| Name | NMSI INC |
|---|---|
| Type | Mortgage Company |
| Address | ROWLAND HEIGHTS, CA 91748 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Mar 1, 2051 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Dec 5, 2025 |
| Property Address | 105 S DELAWARE ST, SAN MATEO, CA 94401-3221 |
| Document Number | 0000066505 |
| Map Reference | MB 2 PG 95 |
| Instrument Date | Nov 18, 2025 |
| Instrument | 2025-066505 |
| Transaction Type | Transfer |
| Record Updated | Dec 31, 2025 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 105 S DELAWARE ST, SAN MATEO, CA 94401-3221 |
The 2025 property tax bill for 105 S Delaware St was $13,010, up 2.3% from the year before.
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 | $914,746 (+2%) Land $457,373 Building $457,373 | ||
| 2025 | $13,010.00 (+2.26%) Homeowner's exemption | $896,810 Land $448,405 Building $448,405 | |
| 2024 | $12,722.00 (+2.85%) | ||
| 2023 | $12,370.00 (+0.39%) Homeowner's exemption | $861,988 Land $430,994 Building $430,994 | $1,468,890 |
| 2022 | $12,322.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 105 S Delaware St in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 5 in force |
| Nearby Flood Claims | 1 (2022) |
| Most Recent Claim | Dec 2022 · Severe Winter Storms, Flooding, Landslides, 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.
The area around 105 S Delaware 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 791 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 · Fiber in parts of the area | 1,500 / 50 |
| Sonic Telecom Fiber | 1,000 / 1,000 |
| Verizon Fixed Wireless | 1,000 / 75 |
| Unwired Fixed Wireless | 300 / 25 |
| Etheric Networks Fixed Wireless | 250 / 100 |
May also be available: GeoLinks, T-Mobile.
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