503 Middlesex Rd, Belmont, CA 94002 Property Records

San Mateo County property record for 503 Middlesex Rd, Belmont, CA 94002

Property Summary

Property Type	Single Family Home
Details	3 bd · 1 ba · 1,010 sqft · built 1953
Lot Size	0.152 acres (6,610 sqft)
Owner	2 Individual Names on Record
Last Sale	$1,371,000 (Jan 2021)
Tax Bill	$19,382 (2025)
Deeds & Mortgages	Jan 2021 Sale & Mortgage Mar 2020 Transfer
Flood Zone	Zone X (minimal risk)
APN	`040-273-080`

Property Details

APN / Parcel Number

Primary APN	`040-273-080`

Interior

Bedrooms	3 Beds
Full Baths	1 Bath
Total Rooms	5 Rooms
Building Area	1,010 sqft Living Area
1st Floor Area	1,010 sqft
Family Room	Family Room

Exterior

Year Built	Built 1953
Effective Year Built	Effective 1953
Lot Area	6,610 sqft (0.152 acres)
Lot Dimensions	111 ft deep x 58 ft wide
Garage Area	380 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	503 MIDDLESEX RD
City	BELMONT
State	CA
Zip	94002-2526
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R10006
Legal Description	LOT 21 BLOCK 17 STERLING DOWNS RSM 35/25 26 27 CITY OF BELMONT
Legal Subdivision	STERLING DOWNS
Legal Block	17
Legal Lot Number	21
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	3
Census Block	3001
Census Tract	608600

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	503 MIDDLESEX RD, BELMONT, CA 94002-2526
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Date	Document
Jan 5, 2021	Grant Deed, Transfer · Conventional Mortgage US BANK NA
Mar 30, 2020	Quit Claim Deed, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jan 5, 2021 · Amount on Record
Deed Sale	Jan 5, 2021 · Amount on Record
Deed Document Number	20211129
Prior Transfer Date	Mar 2, 2020
Prior Transfer Doc	0000029007
Record Updated	Oct 29, 2026

January 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Jan 5, 2021
Property Address	503 MIDDLESEX RD, BELMONT, CA 94002-2526
Document Number	0000001129
Map Reference	MB 35 PG 25-27
Instrument Date	Dec 17, 2020
Instrument	2021-001129
Transaction Type	Transfer
Record Updated	Aug 9, 2021
Title Company	FIRST AMERICAN TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$1,508.10
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
Address	503 MIDDLESEX RD, BELMONT, CA 94002-2526

Mortgage

Document Number	0000001130
Date	Jan 5, 2021
Instrument	2021-001130

Lender

Name	US BANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Feb 1, 2051

March 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SAN MATEO CA
Recording Date	Mar 30, 2020
Property Address	503 MIDDLESEX RD, BELMONT, CA 94002-2526
Document Number	0000029007
Instrument Date	Mar 2, 2020
Instrument	29007
Transaction Type	Transfer
Record Updated	Apr 30, 2020
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	3016 COTTONWOOD ST ANCHORAGE AK 995084317, ANCHORAGE, AK 99508-4317

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	California
Municipality	Belmont City
County	San Mateo County
Elementary School District	Belmont-Redwood Shores Elementary School District (KG - 08)
Secondary School District	Sequoia Union High School District (09 - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$1,513,691 (+2%) Land $1,324,895 Building $188,796
2025	$19,382.00 (+9.3%)	$1,484,012 (+4.04%) Land $1,298,917 Building $185,095
2023	$17,733.00 (+7.36%)	$1,426,388 Land $1,248,480 Building $177,908	$1,357,830
2022	$16,517.00

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

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

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

Wildfire

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	MID-PENINSULA WATER DISTRICT serves 31,059 people · EPA ID CA4110001
Water Source	Purchased surface water from several systems
Last State Inspection	Feb 2025
Lead	Under 1 ppb (2022–2024) 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 642 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
Verizon Fixed Wireless	300 / 20
Etheric Networks Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20

May also be available: GeoLinks, Sonic Telecom.

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