San Mateo County property record for 2641 Isabelle Ave, San Mateo, CA 94403
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1.5 ba · 1,520 sqft · built 1938 |
| Lot Size | 0.123 acres (5,351 sqft) |
| Owner | 2 Company Names on File |
| Tax Bill | $7,183 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 039-344-070 |
| Primary APN | 039-344-070 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,520 sqft Living Area |
| Gross Area | 1,820 sqft |
| 1st Floor Area | 1,020 sqft |
| Basement Area | 470 sqft |
| Finished Basement | 170 sqft |
| Unfinished Basement | 300 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1938 |
|---|---|
| Effective Year Built | Effective 1938 |
| Lot Area | 5,351 sqft (0.123 acres) |
| Garage Type | Basement |
| Garage Area | 300 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 2641 ISABELLE AVE |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94403-2308 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 7 BLOCK 2 RESUB OF BLOCKS 1 2 & 5 SAN MATEO TERRACE RSM 20/4 CITY OF SAN MATEO |
| Legal Subdivision | SAN MATEO TERRACE |
| Legal Block | 2,1 |
| Legal Lot Number | 7 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 3 |
| Census Block | 3007 |
| Census Tract | 607400 |
Source: San Mateo County records · APN 039-344-070
Assessment roll updated July 15, 2026 · Last verified July 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 2641 ISABELLE AVE, SAN MATEO, CA 94403-2308 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Transfer Date | Jul 14, 2006 |
| Transfer Doc | 0000125083 |
| Record Updated | Sep 20, 2026 |
Source: San Mateo County records · Assessment roll updated July 15, 2026 · Last verified July 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) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $550,602 (+2%) Land $173,236 Building $377,366 | ||
| 2025 | $7,183.00 (+5.62%) Homeowner's exemption | $539,807 (+4.04%) Land $169,840 Building $369,967 | |
| 2023 | $6,801.00 (+0.67%) Homeowner's exemption | $518,847 Land $163,246 Building $355,601 | $2,392,200 |
| 2022 | $6,756.00 |
Source: FEMA National Flood Hazard Layer, San Mateo County (06081C), as of September 10, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060816074003, as of September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition, as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 4 (1978–1986) |
| Most Recent Claim | Feb 1986 · Severe Storms & Flooding |
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
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.
Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| 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 |
| Radiate Holdings Cable | 1,500 / 50 |
May also be available: California Internet, Etheric Communications, LLC., T-Mobile USA, Verizon.
Based on FCC filings for 799 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System, water system CA4110008, as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | CALIFORNIA WATER SERVICE - SAN MATEO private · serves 103,536 people |
|---|---|
| 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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