Contra Costa County property record for 423 Montecillo Dr, Walnut Creek, CA 94595
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3.5 ba · 3,799 sqft · built 1978 |
| Lot Size | 0.993 acres (43,264 sqft) |
| Owner | Company Name on File |
| Tax Bill | $20,315 (2025) |
| Deeds & Mortgages | Oct 2025 Line of Credit Jun 2023 Mortgage + 7 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 184-470-002-9 |
| Primary APN | 184-470-002-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 12 Rooms |
| Stories | 2 Stories |
| Building Area | 3,799 sqft Living Area |
| 1st Floor Area | 3,510 sqft |
| 2nd Floor Area | 289 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1978 |
|---|---|
| Effective Year Built | Effective 2010 |
| Architectural Style | Ranch |
| Exterior Material | Wood Siding |
| Roof Material | Tile |
| Lot Area | 43,264 sqft (0.993 acres) |
| Garage Type | Attached |
| Garage Area | 656 sqft |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | Deck Area |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 423 MONTECILLO DR |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94595-2303 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R20 |
| Legal Description | T04979 L0002 |
| Legal Subdivision | SUBDIVISION 4979 |
| Legal Tract | 04979 |
| Legal Lot Number | 2 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 334200 |
Source: Contra Costa County records · APN 184-470-002-9
Assessment roll updated July 14, 2026 · Last verified July 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 File |
|---|---|
| Mailing Address | 423 MONTECILLO DR, WALNUT CREEK, CA 94595-2303 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Date | Document |
|---|---|
| Oct 29, 2025 | Deed of Trust, Mortgage · Line of Credit CHEVRON FCU |
| Jun 07, 2023 | Deed of Trust, Mortgage · Conventional Mortgage CHEVRON FCU |
| Sep 08, 2017 | Deed of Trust, Mortgage · Line of Credit TCF NATIONAL BANK |
| Sep 08, 2017 | Deed of Trust, Mortgage · Conventional Mortgage CMG MORTGAGE INC |
| May 21, 2019 | Deed of Trust, Mortgage · ARM MUFG UNION BANK NA |
| Feb 02, 2022 | Deed of Trust, Mortgage · Conventional Mortgage CHEVRON FCU |
| Jul 24, 2020 | Deed of Trust, Mortgage · Line of Credit HERITAGE BK/COMMERCE |
| Apr 08, 2020 | Intrafamily Transfer, Transfer · Conventional Mortgage KELLER MORTGAGE LLC |
| Apr 08, 2020 | Quit Claim Deed, Transfer NORTH AMERICAN TITLE |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Nov 01, 2016 |
| Deed Sale | Nov 01, 2016 |
| Prior Sale | Sep 17, 2015 |
| Deed Document Number | 2016234213 |
| Last Transfer Date | Apr 03, 2020 |
| Transfer Doc | 0000067238 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 423 MONTECILLO DR, WALNUT CREEK, CA 94595-2303 |
| Transaction Type | Mortgage |
| Record Updated | Nov 07, 2025 |
| Title Company | E-CHICAGO TITLE, CHICAGO TITLE |
| Name | Verified Name |
|---|---|
| Address | 423 MONTECILLO DR, WALNUT CREEK, CA 94595-2303 |
| Document Number | 0000114548 |
|---|---|
| Date | Oct 29, 2025 |
| Instrument | 2025- 114548 |
| Name | CHEVRON FCU |
|---|---|
| Type | Credit Union |
| Address | 2300 CLAYTON RD STE 700, CONCORD, CA 94520 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 300 Months |
| Due | Oct 24, 2050 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 423 MONTECILLO DR, WALNUT CREEK, CA 94595-2303 |
| Transaction Type | Mortgage |
| Record Updated | Jun 16, 2023 |
| Title Company | TRANSTAR NATIONAL TITLE |
| Name | Verified Name |
|---|---|
| Address | 423 MONTECILLO DR, WALNUT CREEK, CA 94595-2303 |
| Document Number | 0000054257 |
|---|---|
| Date | Jun 07, 2023 |
| Instrument | 2023-054257 |
| Name | CHEVRON FCU |
|---|---|
| Type | Credit Union |
| Address | CONCORD, CA 94520 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 344 Months |
| Due | Feb 01, 2052 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 423 MONTECILLO DR, WALNUT CREEK, CA 94595-2303 |
| Transaction Type | Mortgage |
| Record Updated | Nov 03, 2022 |
| Title Company | CHICAGO TITLE |
| Name | Verified Name |
|---|
| Document Number | 0000164166 |
|---|---|
| Date | Sep 08, 2017 |
| Instrument | 2017-164166 |
| Name | TCF NATIONAL BANK |
|---|---|
| Type | Bank |
| Address | SIOUX FALLS, SD 57106 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Sep 23, 2047 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 423 MONTECILLO DR, WALNUT CREEK, CA 94595-2303 |
| Transaction Type | Mortgage |
| Record Updated | Nov 03, 2022 |
| Title Company | CHICAGO TITLE COMPANY |
| Name | Verified Name |
|---|
| Document Number | 0000164165 |
|---|---|
| Date | Sep 08, 2017 |
| Instrument | 2017-164165 |
| Name | CMG MORTGAGE INC |
|---|---|
| Type | Mortgage Company |
| Address | SAN RAMON, CA 94583 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Oct 01, 2047 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 423 MONTECILLO DR, WALNUT CREEK, CA 94595-2303 |
| Transaction Type | Mortgage |
| Record Updated | Nov 03, 2022 |
| Title Company | OLD REPUBLIC TITLE |
| Name | Verified Name |
|---|
| Document Number | 0000073269 |
|---|---|
| Date | May 21, 2019 |
| Instrument | 2019-073269 |
| Name | MUFG UNION BANK NA |
|---|---|
| Type | Bank |
| Address | SAN DIEGO, CA 92121 |
| Type | ARM |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Jun 01, 2049 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 3.87% |
| Type Change Date | Jun 01, 2029 |
| Change Frequency | Annually |
| Min Rate At Change | 2.25% |
| Max Rate At Change | 5.87% |
| Index | 1-Year LIBOR |
| Max Rate | 9.87% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 423 MONTECILLO DR, WALNUT CREEK, CA 94595-2303 |
| Transaction Type | Mortgage |
| Record Updated | Nov 03, 2022 |
| Name | Verified Name |
|---|---|
| Address | 423 MONTECILLO DR, WALNUT CREEK, CA 94595-2303 |
| Document Number | 0000020297 |
|---|---|
| Date | Feb 02, 2022 |
| Instrument | 2022-020297 |
| Name | CHEVRON FCU |
|---|---|
| Type | Credit Union |
| Address | OAKLAND, CA 94607 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Feb 01, 2052 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 423 MONTECILLO DR, WALNUT CREEK, CA 94595-2303 |
| Document Number | 0000156809 |
| Instrument Date | Jul 24, 2020 |
| Transaction Type | Mortgage |
| Record Updated | Aug 11, 2020 |
| Title Company | OLD REPUBLIC TITLE, OLD REPUBLIC TITLE CO OAKLAND |
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 423 MONTECILLO DR WALNUT CREEK CA 945952303, WALNUT CREEK, CA 94595-2303 |
| Document Number | 0000156809 |
|---|---|
| Date | Jul 30, 2020 |
| Instrument | 156809 |
| Name | HERITAGE BK/COMMERCE |
|---|---|
| Type | Bank |
| Address | SAN JOSE, CA 95113 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Rate Type | Adjustable Rate |
|---|
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Apr 08, 2020 |
| Property Address | 423 MONTECILLO DR, WALNUT CREEK, CA 94595-2303 |
| Document Number | 0000067236 |
| Map Reference | MB 202 PG 20 |
| Instrument Date | Apr 03, 2020 |
| Instrument | 2020-067236 |
| Transaction Type | Transfer |
| Record Updated | Nov 03, 2022 |
| Title Company | NORTH AMERICAN TITLE CO INC |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 423 MONTECILLO DR, WALNUT CREEK, CA 94595-2303 |
| Document Number | 0000067237 |
|---|---|
| Date | Apr 08, 2020 |
| Instrument | 2020-067237 |
| Name | KELLER MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | May 01, 2050 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Apr 08, 2020 |
| Property Address | 423 MONTECILLO DR, WALNUT CREEK, CA 94595-2303 |
| Document Number | 0000067238 |
| Instrument Date | Mar 30, 2020 |
| Instrument | 67238 |
| Transaction Type | Transfer |
| Record Updated | May 07, 2020 |
| Title Company | NORTH AMERICAN TITLE |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 423 MONTECILLO DR WALNUT CREEK CA 945952303, WALNUT CREEK, CA 94595-2303 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Walnut Creek City |
| Secondary School District | Acalanes Union High School District (09 - 12) |
| Elementary School District | Walnut Creek Elementary School District (KG - 08) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,755,971 (+2%) Land $967,157 Building $788,814 | |
| 2025 | $20,315.00 (+5.56%) Homeowner's exemption | $1,721,542 (+4.04%) Land $948,194 Building $773,348 |
| 2023 | $19,245.00 (+19.25%) Homeowner's exemption | $1,654,694 Land $911,375 Building $743,319 |
| 2022 | $16,139.00 |
Source: FEMA National Flood Hazard Layer as of October 12, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 8 (10% premium discount) |
| Nearby Flood Policies | 7 in force |
| Nearby Flood Claims | 57 (1982–2005) |
| Claims Outside the SFHA | 3 of 57 |
| Most Recent Claim | Dec 2005 · Severe Storms, Flooding, Mudslides, And Landslides |
| Claims by Event |
|
| Wildfire Risk | Low lower than 65% of the US · lower than 79% of California |
|---|---|
| Wildfire Likelihood | 0.03% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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.
Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| Radiate Holdings Cable | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Etheric Communications, LLC., Verizon.
Based on FCC filings for 224 locations within half a mile of this property.
5G (outdoors only) and 4G LTE
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | EAST BAY MUD serves 1,468,000 people |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2021 |
| Lead | Under 1 ppb (2022–2024) action level 15 ppb |
| 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. This system sells water to local utilities; the supplier billing this address may be one of them. The full violation and enforcement history is in the system's EPA record.
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