The 2025 property tax bill for 312 Delmar Way was $14,889 with a homeowner's exemption.
Source: San Mateo County assessment roll, as of July 15, 2026
Property Jurisdictions
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)
Tax Bill & Assessment History
Year
Tax Bill
Assessed Value
Assessed Market Value
2026
$1,142,234 (+2%)Land $554,704Building $587,530
2025
$14,889.00Homeowner's exemption
$1,119,839Land $543,828Building $576,011
2023
$13,975.00 (-0.7%)Homeowner's exemption
$1,076,356Land $522,711Building $553,645
$1,589,220
2022
$14,073.00
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Flood
FEMA maps place 312 Delmar Way in Zone X, an area of minimal flood risk, though there have been 4 flood claims nearby since 1978.
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
Nearby Flood Claims
4 (1978–1986)
Most Recent Claim
Feb 1986 · Severe Storms & Flooding
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.
Wildfire
The area around 312 Delmar Way 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.
Drinking Water
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
Violations Reported to EPA
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.
Internet Providers
Source: FCC Broadband Data Collection, based on 799 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
1,500 / 50
May also be available: Etheric Networks, GeoLinks, T-Mobile, Verizon.