San Mateo County property record for 840 Elm St, San Carlos, CA 94070
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 2 ba · 1,350 sqft · built 1950 |
| Lot Size | 0.144 acres (6,279 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $430,000 (May 1999) |
| Tax Bill | $10,514 (2025) |
| Deeds & Mortgages | Oct 2017 Transfer Oct 2017 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 050-162-040 |
| Primary APN | 050-162-040 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,350 sqft Living Area |
| 1st Floor Area | 960 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | Ranch |
| Exterior Material | Wood |
| Construction Type | Wood |
| Roof Material | Composition Shingle |
| Lot Area | 6,279 sqft (0.144 acres) |
| Garage Area | 400 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 840 ELM ST |
|---|---|
| City | SAN CARLOS |
| State | CA |
| Zip | 94070-3063 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 11 BLOCK 2 HOWARD PARK |
| Legal Subdivision | HOWARD PARK |
| Legal Block | 2 |
| Legal Lot Number | 11 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2014 |
| Census Tract | 609201 |
840 Elm St is owner-occupied and held in a trust since October 2017.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 840 ELM ST, SAN CARLOS, CA 94070-3063 |
| 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 |
|---|---|
| Oct 31, 2017 | Quit Claim Deed, Transfer CHICAGO TITLE COMPANY |
| Oct 26, 2017 | Quit Claim Deed, Transfer · Conventional Mortgage QUICKEN LNS |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 11, 1999 · Amount on File |
| Deed Sale | May 11, 1999 · Amount on File |
| Prior Sale | Aug 17, 1995 · Amount on File |
| Deed Document Number | 199982374 |
| Last Transfer Date | Oct 13, 2017 |
| Transfer Doc | 0000096411 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Oct 31, 2017 |
| Property Address | 840 ELM ST, SAN CARLOS, CA 94070-3063 |
| Document Number | 0000096411 |
| Instrument Date | Oct 13, 2017 |
| Instrument | 96411 |
| Transaction Type | Transfer |
| Record Updated | Jan 3, 2018 |
| Title Company | CHICAGO TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 840 ELM ST SAN CARLOS CA 940703063, SAN CARLOS, CA 94070-3063 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Oct 26, 2017 |
| Property Address | 840 ELM ST, SAN CARLOS, CA 94070-3063 |
| Document Number | 0000094839 |
| Instrument Date | Oct 13, 2017 |
| Instrument | 94839 |
| Transaction Type | Transfer |
| Record Updated | Nov 27, 2017 |
| Title Company | CHICAGO TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 840 ELM ST SAN CARLOS CA 940703063, SAN CARLOS, CA 94070-3063 |
| Document Number | 94840 |
|---|---|
| Date | Oct 26, 2017 |
| Instrument | 94840 |
| Name | QUICKEN LNS |
|---|---|
| Type | Funding / Finance Company |
| Address | DETROIT, MI 48226-1906 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 180 Months |
| Due | Oct 25, 2032 |
The 2025 property tax bill for 840 Elm St was $10,514 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 Carlos City |
| Elementary School District | San Carlos Elementary School District (KG - 08) |
| Secondary School District | Sequoia Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $796,587 (+2%) Land $343,787 Building $452,800 | ||
| 2025 | $10,514.00 Homeowner's exemption | $780,970 Land $337,047 Building $443,923 | |
| 2023 | $10,024.00 (+2.18%) Homeowner's exemption | $750,647 Land $323,960 Building $426,687 | $1,689,840 |
| 2022 | $9,810.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 840 Elm 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 |
| Community Rating System | Class 9 (5% premium discount) |
| Nearby Flood Policies | 5 in force |
| Nearby Flood Claims | 5 (1983–2023) |
| Claims Outside the SFHA | 4 of 5 |
| Most Recent Claim | Jan 2023 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
| Claims by Event |
|
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 840 Elm 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 CARLOS private · serves 34,801 people · EPA ID CA4110007 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Sep 2024 |
| Lead | 6 ppb (2022–2024) 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 738 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 |
| Sonic Telecom Fiber | 1,000 / 1,000 |
| 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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