309 S Ashton Ave, Millbrae, CA 94030 Property Records

San Mateo County property record for 309 S Ashton Ave, Millbrae, CA 94030

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,520 sqft · built 1956
Lot Size	0.357 acres (15,565 sqft)
Owner	Individual Name on File
Last Sale	$1,910,000 (May 2026)
Tax Bill	$26,924 (2025)
Deeds & Mortgages	May 2026 Sale & Mortgage Jul 2017 Sale + 2 more
Flood Zone	Zone X (minimal risk)
APN	`025-091-030`

Property Details

APN / Parcel Number

Primary APN	`025-091-030`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,520 sqft Living Area
1st Floor Area	1,520 sqft
Family Room	Family Room

Exterior

Year Built	Built 1956
Effective Year Built	Effective 1956
Lot Area	15,565 sqft (0.357 acres)
Lot Dimensions	223 ft deep x 70 ft wide
Garage Area	360 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	309 S ASHTON AVE
City	MILLBRAE
State	CA
Zip	94030-3034
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R10006
Legal Description	LOT 18 BLOCK 23 MILLS ESTATE NO 6 RSM 42/43 CITY OF MILLBRAE
Legal Subdivision	MILLS ESTATE NO 6
Legal Block	23
Legal Lot Number	18
Jurisdiction	SAN MATEO CA
Township / Civil Division	SOUTH SAN FRANCISCO
Census Block Group	1
Census Block	1012
Census Tract	604900

Owner

309 S Ashton Ave is owned by an individual who bought it in May 2026.

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

Owner of Record	Individual Name on File
Mailing Address	3009 MARINA DR, ALAMEDA, CA 94501-1637
Owner Type	Individual
Vesting	Community Property

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
May 19, 2026	Grant Deed, Transfer · Seller Carry-Back CHICAGO TITLE COMPANY
Jul 10, 2017	Grant Deed, Transfer STEWART TITLE, STEWART TITLE/CA
Jun 6, 2017	Quit Claim Deed, Transfer ATTORNEY ONLY
Jun 6, 2017	Affidavit of Death, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	May 19, 2026 · Amount on File
Deed Sale	May 19, 2026 · Amount on File
Prior Sale	Jul 10, 2017 · Amount on File
Deed Document Number	202628445
Prior Transfer Date	Feb 4, 2017
Prior Transfer Doc	0000048524
Record Updated	Oct 29, 2026

May 2026: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	May 19, 2026
Property Address	309 S ASHTON AVE, MILLBRAE, CA 94030-3034
Document Number	0000028445
Instrument Date	Mar 12, 2026
Instrument	202628445
Transaction Type	Transfer
Record Updated	Jun 11, 2026
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$212,201.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	3009 MARINA DR, ALAMEDA, CA 94501-1637

Mortgage

Document Number	0000028446,
Date	May 19, 2026
Instrument	202628446

Lender

Special Notes	Seller Financed

Agreement

Type	Seller Carry-Back
Amount	Amount on Record

Interest

Rate	6.46%
Max Rate	-1%

July 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Jul 10, 2017
Property Address	309 S ASHTON AVE, MILLBRAE, CA 94030-3034
Document Number	0000058190
Instrument Date	Jun 26, 2017
Instrument	58190
Transaction Type	Transfer
Record Updated	Aug 7, 2017
Title Company	STEWART TITLE, STEWART TITLE/CA

Transaction

Amount	Amount on Record
Tax	$2,101.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	2305 JUDAH ST SAN FRANCISCO CA 941221538, SAN FRANCISCO, CA 94122-1538

June 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SAN MATEO CA
Recording Date	Jun 6, 2017
Property Address	309 S ASHTON AVE, MILLBRAE, CA 94030-3034
Document Number	0000048524
Instrument Date	Apr 28, 2017
Instrument	48524
Transaction Type	Transfer
Record Updated	Jan 3, 2018
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	50480 TAHOE WAY CANTON MI 481874488, CANTON, MI 48187-4488

June 2017: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	SAN MATEO CA
Recording Date	Jun 6, 2017
Property Address	309 S ASHTON AVE, MILLBRAE, CA 94030-3034
Document Number	0000048523
Instrument Date	Apr 22, 2017
Instrument	48523
Transaction Type	Transfer
Record Updated	Aug 8, 2017
Title Company	ATTORNEY ONLY

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	50480 TAHOE WAY CANTON MI 481874488, CANTON, MI 48187-4488

Tax Assessment & Valuation

The 2025 property tax bill for 309 S Ashton Ave was $26,924.

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

Property Jurisdictions

Type	Name
State	California
County	San Mateo County
Municipality	Millbrae City
Elementary School District	Millbrae 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		$2,216,714 (+2%) Land $1,926,571 Building $290,143
2025	$26,924.00	$2,173,250 Land $1,888,796 Building $284,454
2023	$25,616.00 (+10.96%)	$2,088,861 Land $1,815,452 Building $273,409	$2,180,700
2022	$23,085.00

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

Flood

FEMA maps place 309 S Ashton Ave 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	2 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

Wildfire risk around 309 S Ashton Ave is low, with a 0.01% annual chance of 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 MILLBRAE serves 22,795 people · EPA ID CA4110018
Water Source	Purchased surface water from SAN FRANCISCO REGIONAL WATER SYSTEM
Last State Inspection	Apr 2025
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	1 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 383 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · DSL · Fixed Wireless in parts of the area	5,000 / 5,000
Xfinity Cable	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.

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