San Mateo County property record for 2004 Isabelle Ave, San Mateo, CA 94403
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 4.5 ba · 1,970 sqft · built 1950 |
| Lot Size | 0.165 acres (7,181 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $280,000 (Apr 1994) |
| Tax Bill | $11,741 (2025) |
| Deeds & Mortgages | Oct 2019 Transfer Oct 2019 Line of Credit + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 039-051-080 |
| Primary APN | 039-051-080 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 4.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 1 Story |
| Building Area | 1,970 sqft Living Area |
| 1st Floor Area | 1,190 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | Contemporary |
| Exterior Material | Stucco |
| Roof Material | Other |
| Lot Area | 7,181 sqft (0.165 acres) |
| Lot Dimensions | 120 ft deep x 60 ft wide |
| Garage Area | 285 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 2004 ISABELLE AVE |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94403-1715 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | 65.10 FT ON ISABELLA AVE COM 97.65 FT SELY FROM W 20TH AVE PTN OF LOT 4 BLOCK 3 BERESFORD MANOR RSM 13/44 45 CITY OF SAN MATEO |
| Legal Subdivision | BERESFORD MANOR |
| Legal Block | 3 |
| Legal Lot Number | 4 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 1 |
| Census Block | 1006 |
| Census Tract | 607400 |
2004 Isabelle Ave is owned and occupied by two individuals who acquired it in June 2003.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 2004 ISABELLE AVE, SAN MATEO, CA 94403-1715 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
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 25, 2019 | Quit Claim Deed, Transfer OTHER |
| Oct 18, 2019 | Deed of Trust, Mortgage · Line of Credit BANK OF AMERICA |
| May 19, 2017 | Deed of Trust, Mortgage · Line of Credit BANK OF AMERICA |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Apr 15, 1994 · Amount on File |
| Deed Sale | Apr 15, 1994 · Amount on File |
| Deed Document Number | 199467480 |
| Last Transfer Date | Jun 23, 2003 |
| Transfer Doc | 0000180692 |
| Record Updated | Sep 20, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Oct 25, 2019 |
| Property Address | 2004 ISABELLE AVE, SAN MATEO, CA 94403-1715 |
| Document Number | 0000089114 |
| Instrument Date | Oct 25, 2019 |
| Instrument | 89114 |
| Transaction Type | Transfer |
| Record Updated | Nov 18, 2019 |
| Title Company | OTHER |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 2004 ISABELLE AVE SAN MATEO CA 944031715, SAN MATEO, CA 94403-1715 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 2004 ISABELLE AVE, SAN MATEO, CA 94403-1715 |
| Document Number | 0000090702 |
| Instrument Date | Oct 18, 2019 |
| Transaction Type | Mortgage |
| Record Updated | Nov 18, 2019 |
| Title Company | TITLE 365 |
| Name | Verified Name |
|---|---|
| Address | 2004 ISABELLE AVE SAN MATEO CA 944031715, SAN MATEO, CA 94403-1715 |
| Document Number | 0000090702 |
|---|---|
| Date | Oct 30, 2019 |
| Instrument | 90702 |
| Name | BANK OF AMERICA |
|---|---|
| Type | Bank |
| Address | TAMPA, FL 33634 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Rate Type | Adjustable Rate |
|---|
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 2004 ISABELLE AVE, SAN MATEO, CA 94403-1715 |
| Document Number | 0000047473 |
| Instrument Date | May 19, 2017 |
| Transaction Type | Mortgage |
| Record Updated | Aug 23, 2018 |
| Title Company | AMERICAN TITLE COMPANY, AMERICAN TITLE INC |
| Name | Verified Name |
|---|---|
| Address | 2004 ISABELLE AVE SAN MATEO CA 944031715, SAN MATEO, CA 94403-1715 |
| Document Number | 0000047473 |
|---|---|
| Date | Jun 1, 2017 |
| Instrument | 47473 |
| Name | BANK OF AMERICA |
|---|---|
| Type | Bank |
| Address | TAMPA, FL 33634 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Rate Type | Adjustable Rate |
|---|
The 2025 property tax bill for 2004 Isabelle Ave was $11,741.
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 | $876,831 (+2%) Land $287,822 Building $589,009 | ||
| 2025 | $11,741.00 | $859,640 Land $282,179 Building $577,461 | |
| 2023 | $11,572.00 (+0.56%) | $826,263 Land $271,223 Building $555,040 | $1,642,950 |
| 2022 | $11,508.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 2004 Isabelle Ave 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 | 1 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 2004 Isabelle Ave 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 423 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 · Fiber in parts of the area | 1,500 / 50 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks, Verizon.
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