216 Mountaire Cir, Clayton, CA 94517 Property Records

Contra Costa County property record for 216 Mountaire Cir, Clayton, CA 94517

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,919 sqft · built 1971
Lot Size	0.262 acres (11,400 sqft)
Owner	2 Company Names on File
Last Sale	$525,000 (Jun 2009)
Tax Bill	$8,670 (2025)
Deeds & Mortgages	Oct 2020 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`119-141-009-9`

Property Details

APN / Parcel Number

Primary APN	`119-141-009-9`
Alternative APN	`119-141-009`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	11 Rooms
Stories	1 Story
Building Area	1,919 sqft Living Area
1st Floor Area	1,919 sqft

Exterior

Year Built	Built 1971
Effective Year Built	Effective 1972
Architectural Style	Cluster
Lot Area	11,400 sqft (0.262 acres)
Garage Type	Attached
Garage Area	523 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	216 MOUNTAIRE CIR
City	CLAYTON
State	CA
Zip	94517-1523
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	TRACT 4011 LOT 8 EX 1/2 MR
Legal Subdivision	SUBDIVISION 4011
Legal Tract	4011
Legal Lot Number	8
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	3
Census Block	3006
Census Tract	355306

Owner

Source: Contra Costa County records · APN 119-141-009-9

Assessment roll updated July 14, 2026 · Last verified July 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 File
Mailing Address	216 MOUNTAIRE CIR, CLAYTON, CA 94517-1523
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Jun 04, 2009 · Amount on Record
Deed Sale	Jun 04, 2009 · Amount on Record
Deed Document Number	2009129288
Last Transfer Date	Oct 08, 2020
Transfer Doc	0000251296
Record Updated	Sep 20, 2026

October 2020: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Oct 27, 2020
Property Address	216 MOUNTAIRE CIR, CLAYTON, CA 94517-1523
Document Number	0000251296
Map Reference	MB 134 PG 6
Instrument Date	Oct 08, 2020
Instrument	2020-251296
Transaction Type	Transfer
Record Updated	Nov 03, 2022
Title Company	FIDELITY NATIONAL TITLE

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	Family Trust
Address	216 MOUNTAIRE CIR, CLAYTON, CA 94517-1523

Mortgage

Document Number	0000251297
Date	Oct 27, 2020
Instrument	2020-251297

Lender

Name	FREMONT BANK
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Nov 01, 2050

Tax Assessment & Valuation

Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026

Property Jurisdictions

Type	Name
State	California
County	Contra Costa County
Municipality	Clayton City
Unified School District	Mount Diablo Unified School District (KG - 12)

Tax Bill & Assessment History

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

Year	Tax Bill	Assessed Value
2026		$689,580 (+2%) Land $433,453 Building $256,127
2025	$8,670.00 (+4.6%) Homeowner's exemption	$676,059 (+4.04%) Land $424,954 Building $251,105
2023	$8,289.00 (+1.41%) Homeowner's exemption	$649,808 Land $408,453 Building $241,355
2022	$8,174.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of October 12, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	4 in force

Wildfire

Wildfire Risk	Moderate above 52% of the US · lower than 69% of California
Wildfire Likelihood	0.1% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

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.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20
T-Mobile USA Fixed Wireless	100 / 20

May also be available: AT&T, Radiate Holdings.

Based on FCC filings for 351 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	CONTRA COSTA WATER DISTRICT serves 210,500 people
Water Source	Surface water
Last State Inspection	Jan 2022
Lead	Under 1 ppb (2026–2028) 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.