10312 Mast Ave, Westminster, CA 92683 Property Records

Orange County property record for 10312 Mast Ave, Westminster, CA 92683

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,204 sqft · built 1960
Lot Size	0.138 acres (6,000 sqft)
Owner	Company Name on Record
Tax Bill	$3,913 (2025)
Deeds & Mortgages	Nov 2021 Transfer May 2021 Mortgage + 1 more
Flood Zone	Zone X (moderate risk)
APN	`099-562-09`

Property Details

APN / Parcel Number

Primary APN	`099-562-09`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,204 sqft Living Area
1st Floor Area	1,204 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1960
Effective Year Built	Effective 1960
Lot Area	6,000 sqft (0.138 acres)
Garage Area	430 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	HVAC

Location & Zoning

Street Address	10312 MAST AVE
City	WESTMINSTER
State	CA
Zip	92683-5812
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	N TR 3003 BLK LOT 29
Legal Subdivision	TRACT NO 3003
Legal Tract	3003
Legal Lot Number	29
Jurisdiction	ORANGE CA
Township / Civil Division	NORTH COAST
Census Block Group	4
Census Block	4003
Census Tract	88904

Owner

Source: Orange County records, as of August 4, 2026

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

Owner of Record	Company Name on Record
Mailing Address	11596 QUARTZ AVE, FOUNTAIN VALLEY, CA 92708-2532
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Nov 24, 2021	Intrafamily Transfer, Transfer
May 11, 2021	Intrafamily Transfer, Transfer · Conventional Mortgage GUARANTEED RATE INC
Feb 16, 2017	Quit Claim Deed, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	Name on Deed
Last Transfer Date	Nov 10, 2021
Transfer Doc	0000718621
Record Updated	Sep 20, 2026

November 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ORANGE CA
Recording Date	Nov 24, 2021
Property Address	10312 MAST AVE, WESTMINSTER, CA 92683-5812
Document Number	0000718621
Map Reference	MB 129 PG 21-26
Instrument Date	Nov 10, 2021
Instrument	2021000718621
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
Address	11596 QUARTZ AVE, FOUNTAIN VALLEY, CA 92708-2532

May 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ORANGE CA
Recording Date	May 11, 2021
Property Address	10312 MAST AVE, WESTMINSTER, CA 92683-5812
Document Number	0000310716
Map Reference	MB 129 PG 21-26
Instrument Date	Apr 27, 2021
Instrument	2021000310716
Transaction Type	Transfer
Record Updated	May 30, 2023
Title Company	ORANGE COAST TITLE COMPANY

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	Joint Tenants
Address	10312 MAST AVE, WESTMINSTER, CA 92683-5812

Mortgage

Document Number	0000310717
Date	May 11, 2021
Instrument	2021000310717

Lender

Name	GUARANTEED RATE INC
Type	Mortgage Company
Address	CHICAGO, IL 60613

Agreement

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

February 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	ORANGE CA
Recording Date	Feb 16, 2017
Property Address	10312 MAST AVE, WESTMINSTER, CA 92683-5812
Document Number	0000067172
Instrument Date	Feb 9, 2017
Instrument	67172
Transaction Type	Transfer
Record Updated	Feb 27, 2017
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	16574 HEMLOCK CIR FOUNTAIN VALLEY CA 927082317, FOUNTAIN VALLEY, CA 92708-2317

Tax Assessment & Valuation

Source: Orange County assessment roll, as of August 4, 2026

Property Jurisdictions

Type	Name
State	California
County	Orange County
Municipality	Westminster City
Unified School District	Garden Grove Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$297,495 (+2%) Land $214,833 Building $82,662
2025	$3,913.00 (+4.18%)	$291,662 (+4.04%) Land $210,620 Building $81,042
2023	$3,756.00 (+2.29%)	$280,338 Land $202,442 Building $77,896
2022	$3,672.00

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

Source: FEMA National Flood Hazard Layer, effective September 27, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X moderate risk
500-Year Floodplain	Yes 0.2% annual chance
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	3 in force
Nearby Flood Claims	3 (1995–1998)
Most Recent Claim	Sep 1998 · rainfall accumulation

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 99.1% of the US · lower than 99.2% of California
Wildfire Likelihood	Under 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 WESTMINSTER serves 93,591 people · EPA ID CA3010064
Water Source	Purchased surface water from several systems
Last State Inspection	May 2025
Lead	5 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 789 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · DSL in parts of the area	5,000 / 5,000
Spectrum Cable	1,000 / 1,000
Verizon Fixed Wireless	1,000 / 75
Cosmo Network Solutions Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20

May also be available: GeoLinks.

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