4550 Grothman Ln, Martinez, CA 94553 Property Records

Contra Costa County property record for 4550 Grothman Ln, Martinez, CA 94553

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 2,825 sqft · built 1955
Lot Size	0.44 acres (19,166 sqft)
Owner	Company Name on Record
Last Sale	$585,000 (Sep 2013)
Tax Bill	$11,569 (2025)
Deeds & Mortgages	Jan 2017 Line of Credit Oct 2020 Mortgage + 1 more
Flood Zone	Zone X (moderate risk)
APN	`162-242-030-3`

Property Details

APN / Parcel Number

Primary APN	`162-242-030-3`
Alternative APN	`162-242-030`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Half Baths	1 Half Bath
Total Rooms	11 Rooms
Stories	1 Story
Building Area	2,825 sqft Living Area
1st Floor Area	2,825 sqft

Exterior

Year Built	Built 1955
Effective Year Built	Effective 1980
Lot Area	19,166 sqft (0.44 acres)
Garage Type	Attached
Garage Area	780 sqft
Parking Spaces	3 Parking Spaces

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	4550 GROTHMAN LN
City	MARTINEZ
State	CA
Zip	94553-4412
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R10
Legal Description	POR PINOLE GRANT
Legal Subdivision	EL PINOLE RHO
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	3
Census Block	3002
Census Tract	321103

Owner

Source: Contra Costa County records, as of July 14, 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	900 GOLF CLUB RD, PLEASANT HILL, CA 94523-1145
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Jan 17, 2017	Deed of Trust, Mortgage · Line of Credit JPMORGAN CHASE BANK NA
Oct 20, 2020	Deed of Trust, Mortgage · Conventional Mortgage FAIRWAY INDEPENDENT MORTGAGE CORP
Jun 18, 2018	Quit Claim Deed, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Sep 5, 2013 · Amount on Record
Deed Sale	Sep 5, 2013 · Amount on Record
Prior Sale	Nov 14, 2006 · Amount on Record
Deed Document Number	2013218838
Last Transfer Date	Jun 13, 2018
Transfer Doc	0000096401
Record Updated	Oct 29, 2026

January 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4550 GROTHMAN LN, MARTINEZ, CA 94553-4412
Transaction Type	Mortgage
Record Updated	Nov 3, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000008996
Date	Jan 17, 2017
Instrument	2017-008996

Lender

Name	JPMORGAN CHASE BANK NA
Type	Bank
Address	COLUMBUS, OH 43240

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	420 Months
Due	Jan 7, 2052

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

October 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4550 GROTHMAN LN, MARTINEZ, CA 94553-4412
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	STEWART TITLE OF CA INC

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	900 GOLF CLUB RD, PLEASANT HILL, CA 94523-1145

Mortgage

Document Number	0000242216
Date	Oct 20, 2020
Instrument	2020-242216

Lender

Name	FAIRWAY INDEPENDENT MORTGAGE CORP
Type	Mortgage Company
Address	CARROLLTON, TX 75007

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Nov 1, 2050

June 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Jun 18, 2018
Property Address	4550 GROTHMAN LN, MARTINEZ, CA 94553-4412
Document Number	0000096401
Instrument Date	Jun 13, 2018
Instrument	96401
Transaction Type	Transfer
Record Updated	Jun 21, 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	Revocable Trust
Address	900 GOLF CLUB RD PLEASANT HILL CA 945231145, PLEASANT HILL, CA 94523-1145

Tax Assessment & Valuation

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	Martinez Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$921,470 (+2%) Land $475,137 Building $446,333
2025	$11,569.00 (+6.48%)	$903,403 (+4.04%) Land $465,821 Building $437,582
2023	$10,865.00 (+1.68%)	$868,325 Land $447,734 Building $420,591
2022	$10,685.00

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

Flood

Source: FEMA National Flood Hazard Layer, effective October 12, 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
Nearest Special Flood Hazard Area	Zone AO, within 100 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 27 policies
Nearby Flood Policies	27 in force
Nearby Flood Claims	21 (1982–2023)
Claims Outside the SFHA	3 of 21
Most Recent Claim	Jan 2023 · Severe Winter Storms, Flooding, Landslides, And Mudslides
Claims by Event	Severe Winter Storms, Flooding, Landslides, And Mudslides, Jan 2023 · 2 claims Severe Storms, Flooding, Mud And Landslides, Jan 1997 · 4 claims Severe Winter Storms, Flooding, Landslides, Mud Flows, Jan 1995 · 4 claims

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	High above 70% of the US · above 45% of California
Wildfire Likelihood	0.3% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

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 MARTINEZ serves 31,015 people · EPA ID CA0710006
Water Source	Purchased surface water from CONTRA COSTA WATER DISTRICT
Last State Inspection	Oct 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	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 212 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
AT&T Fixed Wireless · DSL	100 / 20

May also be available: Astound Broadband, T-Mobile, Unwired, Verizon.

Cell Coverage

5G (outdoors only) and 4G LTE

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