509 Tierney Pl, Martinez, CA 94553 Property Records

Contra Costa County property record for 509 Tierney Pl, Martinez, CA 94553

Property Summary

Property Type	Condominium
Details	4 bd · 3.5 ba · 1,866 sqft · built 2016
Lot Size	0.02 acres (880 sqft)
Owner	2 Individual Names on File
Last Sale	$601,500 (Aug 2017)
Tax Bill	$8,781 (2025)
Deeds & Mortgages	Apr 2018 Transfer Feb 2018 Sale & Mortgage + 4 more
Flood Zone	Zone X (minimal risk)
APN	`161-590-022`

Property Details

APN / Parcel Number

Primary APN	`161-590-022`
Alternative APN	`161-590-022-0`

Interior

Bedrooms	4 Beds
Full Baths	3.5 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	1,866 sqft Living Area
1st Floor Area	734 sqft
2nd Floor Area	811 sqft
Basement Area	321 sqft

Exterior

Year Built	Built 2016
Effective Year Built	Effective 2017
Architectural Style	Condo/Apartment
Lot Area	880 sqft (0.02 acres)
Garage Type	Attached
Garage Area	480 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central

Location & Zoning

Street Address	509 TIERNEY PL
City	MARTINEZ
State	CA
Zip	94553-4436
Property Category	Residential
Property Type	Residential > Condominium / Townhouse > Condominium
Legal Description	T9025 L1 B8 U22
Legal Subdivision	SUBDIVISION 9025
Legal Tract	9025
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	4
Census Block	4014
Census Tract	320004

Owner

509 Tierney Pl, a condominium, is owned and occupied by two individuals who bought it in August 2017.

Source: Contra Costa County records, as of July 14, 2026

Owner of Record	2 Individual Names on File
Mailing Address	509 TIERNEY PL, MARTINEZ, CA 94553-4436
Occupancy	Owner Occupied
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
Apr 10, 2018	Quit Claim Deed, Transfer OLD REPUBLIC TITLE
Feb 22, 2018	Grant Deed, Transfer · Conventional Mortgage 44 ARNOLD DRIVE ASSOCIATES LP
Feb 22, 2018	Grant Deed, Transfer OLD REPUBLIC TITLE
Dec 11, 2017	Grant Deed, Transfer · FHA Mortgage CALIBER HM LOANS
Sep 18, 2017	Quit Claim Deed, Mortgage · Conventional with PMI CALIBER HM LOANS
Aug 14, 2017	Grant Deed, Transfer · Conventional with PMI CALIBER HM LOANS

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 14, 2017 · Amount on File
Deed Sale	Aug 14, 2017 · Amount on File
Deed Document Number	2017145773
Record Updated	Sep 20, 2026

April 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Apr 10, 2018
Property Address	509 TIERNEY PL, MARTINEZ, CA 94553-4436
Document Number	0000054904
Instrument Date	Apr 6, 2018
Instrument	54904
Transaction Type	Transfer
Record Updated	Apr 16, 2018
Title Company	OLD REPUBLIC TITLE

Transaction

Tax	$0.00
Amount Accuracy	Full Value
Additional	Quitclaim

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Corporate Trust
Address	380 CIVIC DR #200C PLEASANT HILL CA 945231958, 200C, PLEASANT HILL, CA 94523-1958

February 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Feb 22, 2018
Property Address	509 TIERNEY PL, MARTINEZ, CA 94553-4436
Document Number	0000028062
Instrument Date	Feb 20, 2018
Instrument	28062
Transaction Type	Transfer
Record Updated	Mar 1, 2018
Title Company	OLD REPUBLIC TITLE

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$660.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	429 NOB HILL DR WALNUT CREEK CA 945966713, WALNUT CREEK, CA 94596-6713

Mortgage

Document Number	28064
Date	Feb 22, 2018
Instrument	28064

Lender

Name	44 ARNOLD DRIVE ASSOCIATES LP
Address	380 CIVIC DR # 200C, PLEASANT HILL, CA 94523-1958

Agreement

Type	Conventional Mortgage
Amount	Amount on Record

February 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Feb 22, 2018
Property Address	509 TIERNEY PL, MARTINEZ, CA 94553-4436
Document Number	0000028106
Instrument Date	Feb 16, 2018
Instrument	28106
Transaction Type	Transfer
Record Updated	Mar 1, 2018
Title Company	OLD REPUBLIC TITLE

Transaction

Amount	Amount on Record
Tax	$660.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Corporate Trust
Address	429 NOB HILL DR WALNUT CREEK CA 945966713, WALNUT CREEK, CA 94596-6713

December 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Dec 11, 2017
Property Address	509 TIERNEY PL, MARTINEZ, CA 94553-4436
Document Number	0000231318
Instrument Date	Dec 8, 2017
Instrument	231318
Transaction Type	Transfer
Record Updated	Jan 3, 2018
Title Company	FIRST AMERICAN TITLE

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$737.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	717 TIERNEY PL MARTINEZ CA 945534438, MARTINEZ, CA 94553-4438

Mortgage

Document Number	231320
Date	Dec 11, 2017
Instrument	231320

Lender

Name	CALIBER HM LOANS
Type	Funding / Finance Company
Address	IRVING, TX 75063

Agreement

Type	FHA Mortgage
Amount	Amount on Record
Term	360 Months
Due	Dec 10, 2047

September 2017: Quit Claim Deed, Mortgage

Document Type	Quit Claim Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Sep 18, 2017
Property Address	509 TIERNEY PL, MARTINEZ, CA 94553-4436
Document Number	0000169862
Instrument Date	Sep 14, 2017
Instrument	169862
Transaction Type	Mortgage
Record Updated	Sep 21, 2017
Title Company	OLD REPUBLIC TITLE

Transaction

Tax	$0.00
Additional	Quitclaim

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Separate Estate/Property
Address	513 TIERNEY PL MARTINEZ CA 945534436, MARTINEZ, CA 94553-4436

Mortgage

Document Number	169864
Date	Sep 18, 2017
Instrument	169864

Lender

Name	CALIBER HM LOANS
Type	Funding / Finance Company
Address	IRVING, TX 75063

Agreement

Type	Conventional with PMI
Amount	Amount on Record
Term	360 Months
Due	Sep 17, 2047

August 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Aug 14, 2017
Property Address	509 TIERNEY PL, MARTINEZ, CA 94553-4436
Document Number	0000145773
Instrument Date	Aug 9, 2017
Instrument	145773
Transaction Type	Transfer
Record Updated	Sep 2, 2017
Title Company	OLD REPUBLIC TITLE

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$661.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	509 TIERNEY PL MARTINEZ CA 945534436, MARTINEZ, CA 94553-4436

Mortgage

Document Number	145775
Date	Aug 14, 2017
Instrument	145775

Lender

Name	CALIBER HM LOANS
Type	Funding / Finance Company
Address	IRVING, TX 75063

Agreement

Type	Conventional with PMI
Amount	Amount on Record
Term	360 Months
Due	Aug 13, 2047

Tax Assessment & Valuation

The 2025 property tax bill for 509 Tierney Pl was $8,781 with a homeowner's exemption.

Source: Contra Costa County assessment roll, as of July 14, 2026

Property Jurisdictions

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

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$697,853 (+2%) Land $377,187 Building $320,666
2025	$8,781.00 Homeowner's exemption	$684,171 Land $369,792 Building $314,379
2023	$8,389.00 (+1.66%) Homeowner's exemption	$657,606 Land $355,434 Building $302,172
2022	$8,252.00

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

Flood

FEMA maps place 509 Tierney Pl in Zone X, an area of minimal flood risk.

Source: FEMA National Flood Hazard Layer, effective October 12, 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

Wildfire risk around 509 Tierney Pl is low, with less than 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 96% of the US · lower than 97.4% 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	CONTRA COSTA WATER DISTRICT serves 210,500 people · EPA ID CA0710003
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, 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 334 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20
AT&T DSL · Fiber in parts of the area	100 / 20

May also be available: Astound Broadband.

Cell Coverage

5G (outdoors only) and 4G LTE

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