521 Maple Ave, San Bruno, CA 94066 Property Records

San Mateo County property record for 521 Maple Ave, San Bruno, CA 94066

Property Summary

Property Type	Single Family Home
Details	3 bd · 1.5 ba · 1,830 sqft · built 1953
Lot Size	0.144 acres (6,250 sqft)
Owner	2 Individual Names on Record
Last Sale	$554,500 (Feb 2023)
Tax Bill	$15,874 (2025)
Deeds & Mortgages	Feb 2023 Sale & Mortgage Feb 2021 Sale
Flood Zone	Zone X (minimal risk)
APN	`020-231-100`

Property Details

APN / Parcel Number

Primary APN	`020-231-100`

Interior

Bedrooms	3 Beds
Full Baths	1.5 Baths
Half Baths	1 Half Bath
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,830 sqft Living Area
1st Floor Area	1,830 sqft
Basement Area	380 sqft
Game Room	Game Room
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1953
Effective Year Built	Effective 1953
Architectural Style	Multi-Family
Lot Area	6,250 sqft (0.144 acres)
Lot Dimensions	100 ft deep x 62 ft wide
Terrain	Above Road/Slope
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	521 MAPLE AVE
City	SAN BRUNO
State	CA
Zip	94066-4147
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R10006
Legal Description	LOTS 4 & 5 & NLY 1/2 OF LOT 3 BLK 12A HUNTINGTON PARK 2ND ADD RSM 5/37
Legal Subdivision	HUNTINGTON PARK 2ND ADD
Legal Block	12A
Legal Lot Number	4,5,3
Jurisdiction	SAN MATEO CA
Township / Civil Division	SOUTH SAN FRANCISCO
Census Block Group	3
Census Block	3006
Census Tract	604000

Owner

Source: San Mateo County records, as of July 15, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Individual Names on Record
Mailing Address	521 MAPLE AVE, SAN BRUNO, CA 94066-4147
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Date	Document
Feb 14, 2023	Grant Deed, Transfer · Conventional Mortgage ALAMEDA MORTGAGE CORP
Feb 10, 2021	Grant Deed, Transfer

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Feb 14, 2023 · Amount on Record
Deed Sale	Feb 14, 2023 · Amount on Record
Deed Document Number	20236567
Prior Transfer Date	Jun 5, 2014
Prior Transfer Doc	0000051392
Record Updated	Sep 20, 2026

February 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Feb 14, 2023
Property Address	521 MAPLE AVE, SAN BRUNO, CA 94066-4147
Document Number	0000006567
Map Reference	MB 5 PG 37
Instrument Date	Feb 8, 2023
Instrument	2023-006567
Transaction Type	Transfer
Record Updated	Mar 16, 2023
Title Company	STEWART TITLE, STEWART TITLE OF CA INC

Transaction

Amount	Amount Recorded
Tax	$609.95
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property with Right of Survivorship
Address	521 MAPLE AVE, SAN BRUNO, CA 94066-4147

Mortgage

Document Number	0000006568
Date	Feb 14, 2023
Instrument	2023-006568

Lender

Name	ALAMEDA MORTGAGE CORP
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Mar 1, 2053

February 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Feb 10, 2021
Property Address	521 MAPLE AVE, SAN BRUNO, CA 94066-4147
Document Number	0000022796
Map Reference	MB 5 PG 37
Instrument Date	Feb 9, 2021
Instrument	2021-022796
Transaction Type	Transfer
Record Updated	Aug 9, 2021

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	521 MAPLE AVE, SAN BRUNO, CA 94066-4147

Tax Assessment & Valuation

Source: San Mateo County assessment roll, as of July 15, 2026

Property Jurisdictions

Type	Name
State	California
County	San Mateo County
Municipality	San Bruno City
Elementary School District	San Bruno Park 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		$1,349,435 (+2%) Land $691,731 Building $657,704
2025	$15,874.00 (+3.17%) Homeowner's exemption	$1,322,978 (+133.8%) Land $678,169 Building $644,809
2024	$15,386.00 (+147.96%)
2023	$6,205.00 (+0.16%) Homeowner's exemption	$565,866 Land $266,260 Building $299,606	$1,448,370
2022	$6,195.00

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

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.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 80% of the US · lower than 88% of California
Wildfire Likelihood	0.01% annual chance
Exposure	None beyond 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	CITY OF SAN BRUNO serves 42,631 people · EPA ID CA4110023
Water Source	Purchased surface water from several systems
Last State Inspection	Jul 2024
Lead	Under 1 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 575 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 · Fiber in parts of the area	2,000 / 250
Etheric Networks Fixed Wireless	250 / 100

May also be available: T-Mobile, Verizon.

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