Contra Costa County property record for 3538 Keystone Loop, Discovery Bay, CA 94505 · Last verified August 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 5 Beds |
| Bathrooms | 4 Baths |
| Year Built | Built 2004 |
| Square Footage | 4,011 sqft Living Area |
| Lot Size | 7,500 sqft (0.172 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $495,000 (2004) |
| Tax Bill | $12,136.00 (2025) |
| Primary APN | 011-421-029-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 12 Rooms |
| Building Area | 4,011 sqft Living Area |
| 1st Floor | 1,984 sqft 1st Floor |
| 2nd Floor | 2,027 sqft 2nd Floor |
| Stories | 2 Stories |
| Year Built | Built 2003 |
|---|---|
| Effective Year Built | Effective 2004 |
| Architectural Style | Cluster Style |
| Lot Area | 7,500 sqft (0.172 acres) |
| Parking Spaces | 2 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 438 sqft Garage |
| Cooling System | Central Cooling |
|---|
| Street Address | 3538 KEYSTONE LOOP |
|---|---|
| City | DISCOVERY BAY |
| State | CA |
| Zip | 94505-2321 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | T8430 L29 |
| Legal Subdivision | LAKESHORE SUB 8430 |
| Legal Tract | 8430 |
| Legal Lot Number | 29 |
| Jurisdiction | CONTRA COSTA CA |
| Minor Civil Division | EAST CONTRA COSTA |
| Census Blockgroup | 3 |
| Census Block | 3003 |
| Census Tract | 304007 |
Source: Contra Costa County records · APN 011-421-029-7
Assessment roll updated July 14, 2026 · Last verified August 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 3538 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2321 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Vesting | Joint Tenants |
| Date | Document |
|---|---|
| Aug 11, 2026 | Deed of Trust, Mortgage · Conventional Mortgage MORTGAGE MORTGAGE |
| Oct 27, 2021 | Intrafamily Transfer, Transfer AMROCK LLC |
| Oct 27, 2021 | Intrafamily Transfer, Transfer · Conventional Mortgage ROCKET MORTGAGE LLC |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | May 03, 2004 · Amount on Record |
| Deed Sale | May 03, 2004 · Amount on Record |
| Deed Doc Number | 2004161238 |
| Last Transfer Date | Jun 24, 2024 |
| Transfer Doc | 0000063223 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Aug 11, 2026 |
| Property Address | 3538 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2321 |
| Document Number | 0000084210 |
| Instrument Date | Aug 06, 2026 |
| Instrument | 202684210 |
| Transaction Type | Mortgage |
| Record Updated | Aug 18, 2026 |
| Title Company | STEWART TITLE, STEWART TITLE OF CALIFORNIA |
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants, 205 |
| Address | 3538 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2321 |
| Document Number | 0000084210, |
|---|---|
| Date | Aug 11, 2026 |
| Instrument | 202684210 |
| Name | MORTGAGE MORTGAGE |
|---|
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Sep 01, 2056 |
| Rate Type | Fixed Rate |
|---|---|
| Rate | 6.49% |
| Initial Type | Fixed Rate |
| Max Rate | -1% |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Oct 27, 2021 |
| Property Address | 3538 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2321 |
| Document Number | 0000301127 |
| Map Reference | MB 436 PG 17 |
| Instrument Date | Oct 22, 2021 |
| Instrument | 2021-301127 |
| Transaction Type | Transfer |
| Record Updated | Jun 07, 2023 |
| Title Company | AMROCK LLC |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 3538 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2321 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Oct 27, 2021 |
| Property Address | 3538 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2321 |
| Document Number | 0000301125 |
| Map Reference | MB 436 PG 17 |
| Instrument Date | Oct 22, 2021 |
| Instrument | 2021-301125 |
| Transaction Type | Transfer |
| Record Updated | Nov 03, 2022 |
| Title Company | AMROCK INC, AMROCK LLC |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 3538 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2321 |
| Document Number | 0000301126 |
|---|---|
| Date | Oct 27, 2021 |
| Instrument | 2021-301126 |
| Name | ROCKET MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Nov 01, 2051 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified August 2026
| 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) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $925,956 (+2%) Land $208,080 Building $717,876 | |
| 2025 | $12,136.00 (+31.71%) | $907,800 (+34.23%) Land $204,000 Building $703,800 |
| 2023 | $9,214.00 (+1.68%) Homeowner's exemption | $676,304 Land $150,316 Building $525,988 |
| 2022 | $9,062.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Flood Hazard | Moderate |
| 500-Year Floodplain | Yes |
| Special Flood Hazard Area | No |
| Nearest Special Flood Hazard Area | Zone A, within 500 ft |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
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