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115 Costanza Dr, Martinez, CA 94553 Property Records

Contra Costa County property record for 115 Costanza Dr, Martinez, CA 94553

Property Summary

Property TypeSingle Family Home
Details4 bd · 3 ba · 2,938 sqft · built 1989
Lot Size0.474 acres (20,640 sqft)
Owner2 Individual Names on File
Last Sale$1,175,000 (Nov 2020)
Tax Bill$15,829 (2025)
Deeds & MortgagesOct 2019 Mortgage
Nov 2020 Sale & Mortgage
Flood ZoneZone X (minimal risk)
APN155-560-009-5

Property Details

APN / Parcel Number

Primary APN155-560-009-5
Alternative APN
  • 155-560-009

Interior

Bedrooms4 Beds
Full Baths3 Baths
Total Rooms10 Rooms
Stories2 Stories
Building Area2,938 sqft Living Area
1st Floor Area1,469 sqft
2nd Floor Area1,469 sqft

Exterior

Year BuiltBuilt 1989
Effective Year BuiltEffective 1995
Lot Area20,640 sqft (0.474 acres)
Garage TypeAttached
Garage Area690 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Heating SystemCentral

Location & Zoning

Street Address115 COSTANZA DR
CityMARTINEZ
StateCA
Zip94553-6625
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionT6758 L18
Legal SubdivisionSUBDIVISION 6758
Legal Tract6758
Legal Lot Number18
JurisdictionCONTRA COSTA CA
Township / Civil DivisionCENTRAL CONTRA COSTA
Census Block Group3
Census Block3001
Census Tract321102

Owner

115 Costanza Dr is owned and occupied by two individuals who bought it in November 2020.

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

Owner of Record2 Individual Names on File
Mailing Address115 COSTANZA DR, MARTINEZ, CA 94553-6625
OccupancyOwner Occupied
Owner TypeIndividual
VestingCommunity 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

DateDocument
Oct 9, 2019Deed of Trust, Mortgage · Conventional Mortgage
UNITED WHOLESALE MORTGAGE
Nov 24, 2020Grant Deed, Transfer · Conventional Mortgage
EVERETT FINANCIAL INC

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleNov 24, 2020 · Amount on File
Deed SaleNov 24, 2020 · Amount on File
Prior SaleJun 8, 2001 · Amount on File
Deed Document Number2020284771
Prior Transfer DateOct 12, 2009
Prior Transfer Doc0000255774
Record UpdatedOct 29, 2026

October 2019: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address115 COSTANZA DR, MARTINEZ, CA 94553-6625
Transaction TypeMortgage
Record UpdatedNov 3, 2022
Title CompanyPLACER TITLE CO

Transferred To (Grantee/Buyer)

NameVerified Name

Mortgage

Document Number0000170542
DateOct 9, 2019
Instrument2019-170542
Lender
NameUNITED WHOLESALE MORTGAGE
TypeMortgage Company
AddressPONTIAC, MI 48341
Agreement
TypeConventional Mortgage
AmountAmount on Record
Term181 Months
DueNov 1, 2034

November 2020: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateNov 24, 2020
Property Address115 COSTANZA DR, MARTINEZ, CA 94553-6625
Document Number0000284771
Map ReferenceMB 305 PG 13
Instrument DateNov 18, 2020
Instrument2020-284771
Transaction TypeTransfer
Record UpdatedNov 3, 2022
Title CompanyOLD REPUBLIC TITLE COMPANY

Transaction

AmountAmount on Record
DownpaymentDownpayment on Record
Loan-to-Value (LTV)LTV on Record
Tax$0.00
Amount AccuracyRounded by County
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipCommunity Property with Right of Survivorship
Address115 COSTANZA DR, PACHECO, CA 94553-6625

Mortgage

Document Number0000284772
DateNov 24, 2020
Instrument2020-284772
Lender
NameEVERETT FINANCIAL INC
TypeFunding / Finance Company
Agreement
TypeConventional Mortgage
AmountAmount on Record
Term361 Months
DueDec 1, 2050

Tax Assessment & Valuation

The 2025 property tax bill for 115 Costanza Dr was $15,829 with a homeowner's exemption.

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

Property Jurisdictions

TypeName
StateCalifornia
CountyContra Costa County
MunicipalityMartinez City
Unified School DistrictMartinez Unified School District (KG - 12)

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$1,297,292 (+2%) Land $574,121 Building $723,171
2025$15,829.00 Homeowner's exemption$1,271,856 Land $562,864 Building $708,992
2023$14,879.00 (+1.27%) Homeowner's exemption$1,222,470 Land $541,008 Building $681,462
2022$14,692.00

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

Flood

FEMA maps place 115 Costanza Dr in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 1982.

Source: FEMA National Flood Hazard Layer, effective October 12, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Nearby Flood Claims2 (1982–1995)
Claims Outside the SFHA1 of 2
Most Recent ClaimJan 1995 · Severe Winter Storms, Flooding, Landslides, Mud Flows

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 115 Costanza Dr is moderate, ranking above 50% of the US, with a 0.09% annual chance of wildfire.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire RiskModerate
above 50% of the US · lower than 70% of California
Wildfire Likelihood0.09% annual chance
ExposureNone
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 SystemCONTRA COSTA WATER DISTRICT
serves 210,500 people · EPA ID CA0710003
Water SourceSurface water
Last State InspectionJan 2022
LeadUnder 1 ppb (2026–2028)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
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 329 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Xfinity
Cable		2,000 / 250
Unwired
Fixed Wireless		300 / 25
T-Mobile
Fixed Wireless		100 / 20
AT&T
Fixed Wireless · DSL		100 / 20

May also be available: Astound Broadband, Verizon.

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