4670 Discovery Pt, Discovery Bay, CA 94505 Property Records

Contra Costa County property record for 4670 Discovery Pt, Discovery Bay, CA 94505

Property Summary

Property Type	Single Family Home
Details	3 bd · 3.5 ba · 3,467 sqft · built 1979
Lot Size	0.262 acres (11,400 sqft)
Owner	2 Individual Names on File
Last Sale	$715,000 (Jul 2020)
Tax Bill	$10,181 (2025)
Deeds & Mortgages	Jan 2026 Mortgage Apr 2024 Second Mortgage + 3 more
Flood Zone	Zone X (moderate risk)
APN	`004-020-038-8`

Property Details

APN / Parcel Number

Primary APN	`004-020-038-8`
Alternative APN	`004-020-038`

Interior

Bedrooms	3 Beds
Full Baths	3.5 Baths
Half Baths	1 Half Bath
Total Rooms	10 Rooms
Stories	2 Stories
Building Area	3,467 sqft Living Area
1st Floor Area	1,927 sqft
2nd Floor Area	1,540 sqft

Exterior

Year Built	Built 1979
Effective Year Built	Effective 1994
Lot Area	11,400 sqft (0.262 acres)
View / Lot	Lake
Garage Type	Attached
Garage Area	720 sqft
Parking Spaces	3 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central

Location & Zoning

Street Address	4670 DISCOVERY PT
City	DISCOVERY BAY
State	CA
Zip	94505-9469
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	F1
Legal Description	TRACT 4077 LOT 69 EX MR
Legal Subdivision	SUBDIVISION 4077
Legal Tract	4077
Legal Lot Number	69
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	EAST CONTRA COSTA
Census Block Group	2
Census Block	2002
Census Tract	304004

Owner

4670 Discovery Pt is owned and occupied by two individuals who bought it in July 2020.

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

Owner of Record	2 Individual Names on File
Mailing Address	4670 DISCOVERY PT, DISCOVERY BAY, CA 94505-9469
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

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
Jan 5, 2026	Deed of Trust, Mortgage · Commercial Mortgage RGIM&S INC
Apr 15, 2024	Deed of Trust, Mortgage · Stand-Alone Second Mortgage DISCOVER BANK
Jul 1, 2020	Affidavit of Death, Transfer CHICAGO TITLE COMPANY, CHICAGO TITLE CO
Jul 1, 2020	Affidavit of Death, Transfer CHICAGO TITLE COMPANY, CHICAGO TITLE CO
Jul 1, 2020	Grant Deed, Transfer · Conventional Mortgage HOMEBRIDGE FINANCIAL SERVICES INC

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 1, 2020 · Amount on File
Deed Sale	Jul 1, 2020 · Amount on File
Deed Document Number	2020129266
Record Updated	Oct 29, 2026

January 2026: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4670 DISCOVERY PT, DISCOVERY BAY, CA 94505-9469
Transaction Type	Mortgage
Record Updated	Jan 14, 2026

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4670 DISCOVERY PT, DISCOVERY BAY, CA 94505-9469

Mortgage

Document Number	0000000910
Date	Jan 5, 2026
Instrument	2026- 000910

Lender

Name	RGIM&S INC
Type	Non-Lending Institution
Address	7727 QUIDA DR, WEST PALM BEACH, FL 33411

Agreement

Type	Commercial Mortgage
Amount	Amount on Record

April 2024: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4670 DISCOVERY PT, DISCOVERY BAY, CA 94505-9469
Transaction Type	Mortgage
Record Updated	Apr 26, 2024

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4670 DISCOVERY PT, DISCOVERY BAY, CA 94505-9469

Mortgage

Document Number	0000034188
Date	Apr 15, 2024
Instrument	2024-034188

Lender

Name	DISCOVER BANK
Type	Bank
Address	GREENWOOD, DE 19950

Agreement

Type	Stand-Alone Second Mortgage
Amount	Amount on Record
Term	360 Months
Due	Apr 5, 2054

July 2020: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	CONTRA COSTA CA
Recording Date	Jul 1, 2020
Property Address	4670 DISCOVERY PT, DISCOVERY BAY, CA 94505-9469
Document Number	0000129264
Instrument Date	Jun 24, 2020
Instrument	129264
Transaction Type	Transfer
Record Updated	Jul 22, 2020
Title Company	CHICAGO TITLE COMPANY, CHICAGO TITLE CO

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	1056 PERALTA AVE ALBANY CA 947062402, ALBANY, CA 94706-2402

July 2020: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	CONTRA COSTA CA
Recording Date	Jul 1, 2020
Property Address	4670 DISCOVERY PT, DISCOVERY BAY, CA 94505-9469
Document Number	0000129265
Instrument Date	Jun 24, 2020
Instrument	129265
Transaction Type	Transfer
Record Updated	Jul 22, 2020
Title Company	CHICAGO TITLE COMPANY, CHICAGO TITLE CO

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	1056 PERAOTA ALBANY CA 94706, ALBANY, CA 94706

July 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Jul 1, 2020
Property Address	4670 DISCOVERY PT, DISCOVERY BAY, CA 94505-9469
Document Number	0000129266
Map Reference	MB 170 PG 36
Instrument Date	Jun 24, 2020
Instrument	2020-129266
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	4670 DISCOVERY PT, DISCOVERY BAY, CA 94505-9469

Mortgage

Document Number	0000129267
Date	Jul 1, 2020
Instrument	2020-129267

Lender

Name	HOMEBRIDGE FINANCIAL SERVICES INC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Jul 1, 2050

Tax Assessment & Valuation

The 2025 property tax bill for 4670 Discovery Pt was $10,181 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
Elementary School District	Byron Union Elementary School District (KG - 08)
Secondary School District	Liberty Union High School District (09 - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$789,415 (+2%) Land $165,611 Building $623,804
2025	$10,181.00 Homeowner's exemption	$773,937 Land $162,364 Building $611,573
2023	$9,555.00 (+1.58%) Homeowner's exemption	$743,886 Land $156,060 Building $587,826
2022	$9,406.00

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

Flood

FEMA maps place 4670 Discovery Pt in Zone X, an area of moderate flood risk, within 100 ft of a high-risk flood zone.

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 AE, within 100 ft
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 6 (20% premium discount)
Nearby Flood Policies	1 in force
Nearby Flood Claims	10 (1982–2017)
Claims Outside the SFHA	4 of 10
Most Recent Claim	Jan 2017 · Severe Winter Storms, Flooding, And Mudslides
Claims by Event	Severe Winter Storms And Flooding, Mar 1998 · 2 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

Wildfire risk around 4670 Discovery Pt is low, with a 0.02% annual chance of wildfire.

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

Wildfire Risk	Low lower than 94% of the US · lower than 96% of California
Wildfire Likelihood	0.02% annual chance
Exposure	Indirect within 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	TOWN OF DISCOVERY BAY serves 16,790 people · EPA ID CA0710009
Water Source	Groundwater
Last State Inspection	Mar 2023
Lead	Under 1 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 377 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	100 / 20

May also be available: Matrix Broadband.

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