505 E 40th Ave, San Mateo, CA 94403 Property Records

San Mateo County property record for 505 E 40th Ave, San Mateo, CA 94403 · Last verified July 2026

Property Highlights

Property Type	Residential > Single Family > Home
Bedrooms	3 Beds
Bathrooms	1 Baths
Year Built	Built 1950
Square Footage	1,420 sqft Living Area
Lot Size	5,500 sqft (0.126 acres)
Garage	710 sqft
Occupancy	Owner Occupied
Tax Bill	$7,871.00 (2025)

Owner

Source: San Mateo County records · APN 040-224-040

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	505 E 40TH AVE, SAN MATEO, CA 94403-3606
Occupancy	Owner Occupied
Owner Type	Owner is a Company
Vesting	Owner is a Trust, Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Transfer Date	Jun 08, 2017
Transfer Doc	0000057982
Record Refreshed	Sep 20, 2026

July 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SAN MATEO CA
Recording Date	Jul 07, 2017
Property Address	505 E 40TH AVE, SAN MATEO, CA 94403-3606
Document Number	0000057982
Instrument Date	Jun 08, 2017
Instrument	57982
Transaction Type	Transfer
Record Updated	Aug 04, 2017
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Document Interfamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	505 E 40TH AVE SAN MATEO CA 944033606, SAN MATEO, CA 94403-3606

Tax Assessment & Valuation

Source: San Mateo County records · Assessment roll updated July 15, 2026 · Last verified July 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

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		$449,622 (+2%) Land $173,739 Building $275,883
2025	$7,871.00 (+27.84%) Homeowner's exemption	$440,807 (+4.04%) Land $170,333 Building $270,474
2023	$6,157.00 (+1.1%) Homeowner's exemption	$423,692 Land $163,720 Building $259,972	$1,678,410
2022	$6,090.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, San Mateo County (06081C), updated September 10, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified: October 2026

Flood

FEMA Flood Zone	Zone X
Flood Hazard	Reduced by levee depends on levee performance
500-Year Floodplain	No
Special Flood Hazard Area	No

Wildfire

Wildfire Risk	Not rated no burnable land in reach
Wildfire Likelihood	Negligible
Exposure	None beyond ember reach

Values are read at the parcel center point; lenders make the official flood determination.

Property Details

APN / Parcel Number

Primary APN	`040-224-040`

Interior

Bedrooms	3 Beds
Full Baths	1 Baths
Total Rooms	6 Rooms
Building Area	1,420 sqft Living Area
1st Floor	860 sqft 1st Floor
Family Room	Family Room

Exterior

Year Built	Built 1950
Effective Year Built	Effective 1950
Lot Area	5,500 sqft (0.126 acres)
Depth X Width	100 ft x 55 ft Depth x Width
Parking Spaces	2 Parking Spaces
Garage Area	710 sqft Garage

Utilities and HVAC

Cooling System	Central Cooling
Heating System	Central Heating

Location & Zoning

Street Address	505 E 40TH AVE
City	SAN MATEO
State	CA
Zip	94403-3606
Property Usage	Residential Property Usage
Type	Residential > Single Family > Home
Legal Description	LOT 13 BLOCK 29 SAN MATEO VILLAGE UNIT NO 4 RSM 31/21 22 CITY OF SAN MATEO
Legal Subdivision	SAN MATEO VILLAGE UNIT NO 4
Legal Block	29
Legal Lot Number	13
Jurisdiction	SAN MATEO CA
Minor Civil Division	SAN MATEO
Census Blockgroup	2
Census Block	2001
Census Tract	608501