509 Middlesex Rd, Belmont, CA 94002 Property Records

San Mateo County property record for 509 Middlesex Rd, Belmont, CA 94002

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 1,540 sqft · built 1953
Lot Size	0.124 acres (5,400 sqft)
Owner	2 Company Names on Record
Last Sale	$1,600,000 (Oct 2017)
Tax Bill	$22,512 (2025)
Deeds & Mortgages	Jul 2021 Mortgage Mar 2021 Transfer + 1 more
Flood Zone	Zone X (minimal risk)
APN	`040-273-050`

Property Details

APN / Parcel Number

Primary APN	`040-273-050`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Total Rooms	7 Rooms
Stories	1 Story
Building Area	1,540 sqft Living Area
1st Floor Area	1,010 sqft
Family Room	Family Room
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1953
Effective Year Built	Effective 1953
Architectural Style	Ranch
Exterior Material	Stucco
Construction Type	Frame
Roof Material	Composition Shingle
Lot Area	5,400 sqft (0.124 acres)
Lot Dimensions	90 ft deep x 60 ft wide
Garage Area	400 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	509 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 18 BLOCK 17 STERLING DOWNS RSM 35/25 26 27 CITY OF BELMONT
Legal Subdivision	STERLING DOWNS
Legal Block	17
Legal Lot Number	18
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 Company Names on Record
Mailing Address	509 MIDDLESEX RD, BELMONT, CA 94002-2526
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Jul 28, 2021	Deed of Trust, Mortgage · Conventional Mortgage BANK OF AMERICA NA
Mar 26, 2021	Intrafamily Transfer, Transfer
Oct 6, 2017	Grant Deed, Transfer · Conventional Mortgage WELLS FARGO BANK NA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Oct 6, 2017 · Amount on Record
Deed Sale	Oct 6, 2017 · Amount on Record
Deed Document Number	201788689
Last Transfer Date	Feb 17, 2021
Transfer Doc	0000049528
Record Updated	Oct 29, 2026

July 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	509 MIDDLESEX RD, BELMONT, CA 94002-2526
Transaction Type	Mortgage
Record Updated	Aug 19, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	509 MIDDLESEX RD, BELMONT, CA 94002-2526

Mortgage

Document Number	0000111302
Date	Jul 28, 2021
Instrument	2021-111302

Lender

Name	BANK OF AMERICA NA
Type	Bank
Address	CHARLOTTE, NC 28255

Agreement

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

March 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	SAN MATEO CA
Recording Date	Mar 26, 2021
Property Address	509 MIDDLESEX RD, BELMONT, CA 94002-2526
Document Number	0000049528
Map Reference	MB 35 PG 25-27
Instrument Date	Feb 17, 2021
Instrument	2021-049528
Transaction Type	Transfer
Record Updated	Jun 7, 2023

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	509 MIDDLESEX RD, BELMONT, CA 94002-2526
Investor	Possibly a Property Investor

October 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Oct 6, 2017
Property Address	509 MIDDLESEX RD, BELMONT, CA 94002-2526
Document Number	0000088689
Map Reference	MAP35 PG25-27
Instrument Date	Sep 20, 2017
Instrument	2017-088689
Transaction Type	Transfer
Record Updated	Aug 9, 2021
Title Company	LAWYERS TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
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	3618 22ND ST APT 4, 4, SAN FRANCISCO, CA 94114-3347

Mortgage

Document Number	0000088690
Date	Oct 6, 2017
Instrument	2017-088690

Lender

Name	WELLS FARGO BANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Oct 1, 2047

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		$1,856,931 (+2%) Land $1,299,853 Building $557,078
2025	$22,512.00 (+5.85%)	$1,820,521 (+4.04%) Land $1,274,366 Building $546,155
2023	$21,268.00 (+3.34%)	$1,749,831 Land $1,224,882 Building $524,949	$1,660,950
2022	$20,580.00

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.

Nearby Properties on Middlesex Rd

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures