Ventura County property record for 4100 Guardian St, Simi Valley, CA 93063 · Last verified July 2026
| Property Type | Commercial > Office > Commercial Office |
|---|---|
| Year Built | Built 1998 |
| Square Footage | 13,585 sqft Total Area |
| Lot Size | 8.28 acres |
| Last Sale | $17,916,000 (2026) |
| Tax Bill | $276,741.00 (2025) |
| Primary APN | 626-0-052-065 |
|---|
| Building Area | 13,585 sqft Total Area |
|---|---|
| Office | 13,585 sqft Office |
| Year Built | Built 1998 |
|---|---|
| Effective Year Built | Effective 1998 |
| Lot Area | 360,677 sqft |
| Street Address | 4100 GUARDIAN ST |
|---|---|
| City | SIMI VALLEY |
| State | CA |
| Zip | 93063-6717 |
| Property Usage | Commercial Property Usage |
| Type | Commercial > Office > Commercial Office |
| Legal Description | REF: 56 PM 99 |
| Legal Subdivision | PARCEL MAP LD S572 |
| Legal Block | 52 |
| Jurisdiction | VENTURA CA |
| Minor Civil Division | SIMI VALLEY |
| Census Blockgroup | 3 |
| Census Block | 3001 |
| Census Tract | 7512 |
Source: Ventura County records · APN 626-0-052-065
Assessment roll updated July 15, 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 | 527 W 7TH ST, 200, LOS ANGELES, CA 90014-2513 |
| Owner Type | Owner is a Company |
| Date | Document |
|---|---|
| May 05, 2023 | Deed of Trust, Mortgage · Stand Alone Second Mortgage SUNWEST BANK |
| May 05, 2023 | Deed of Trust, Mortgage · Line of Credit SUNWEST BANK |
| Jan 12, 2026 | Grant Deed, Construction Loan · Building or Construction Mortgage CANADIAN IMPERIAL BANK OF COMMERCE |
| Mar 29, 2024 | Grant Deed, Transfer FIDELITY NATIONAL TITLE, FIDELITY NATL TTL BUILDER SV |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Jan 12, 2026 · Amount on Record |
| Deed Sale | Jan 12, 2026 · Amount on Record |
| Prior Sale | Jun 01, 1998 · Amount on Record |
| Deed Doc Number | 20261637 |
| Prior Transfer Date | Oct 07, 2004 |
| Prior Transfer Doc | 0000131397 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | VENTURA CA |
| Property Address | 4100 GUARDIAN ST, SIMI VALLEY, CA 93063-6717 |
| Transaction Type | Mortgage |
| Record Updated | Jan 27, 2026 |
| Title Company | COMMONWEALTH LAND TITLE COMPANY/DAL, COMMONWEALTH LAND TITLE CO |
| Name | Verified Name |
|---|---|
| Address | 1200 WILSHIRE BLVD 208, 208, LOS ANGELES, CA 90017-1931 |
| Document Number | 0000031415 |
|---|---|
| Date | May 05, 2023 |
| Instrument | 2023000031415 |
| Name | SUNWEST BANK |
|---|---|
| Type | Bank |
| Address | IRVINE, CA 92614 |
| Type | Stand Alone Second Mortgage |
|---|---|
| Amount | Amount Recorded |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | VENTURA CA |
| Property Address | 4100 GUARDIAN ST, SIMI VALLEY, CA 93063-6717 |
| Transaction Type | Mortgage |
| Record Updated | Jan 27, 2026 |
| Title Company | COMMONWEALTH LAND TITLE COMPANY/DAL, COMMONWEALTH LAND TITLE CO |
| Name | Verified Name |
|---|---|
| Address | 1200 WILSHIRE BLVD 208, 208, LOS ANGELES, CA 90017-1931 |
| Document Number | 0000031419 |
|---|---|
| Date | May 05, 2023 |
| Instrument | 2023000031419 |
| Name | SUNWEST BANK |
|---|---|
| Type | Bank |
| Address | IRVINE, CA 92614 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly (Revolving credit lines are monthly unless stated otherwise). |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | VENTURA CA |
| Recording Date | Jan 12, 2026 |
| Property Address | 4100 GUARDIAN ST, SIMI VALLEY, CA 93063-6717 |
| Document Number | 0000001637 |
| Map Reference | MB 56 PG 99 |
| Instrument Date | Jan 05, 2026 |
| Instrument | 2026000001637 |
| Transaction Type | Construction Loan |
| Record Updated | Jan 27, 2026 |
| Title Company | COMMONWEALTH LAND TITLE INSURANCE COMPANY, COMMONWEALTH LAND TTL INS CO |
| Amount | Amount Recorded |
|---|---|
| Tax | $0.00 |
| Amount Accuracy | Rounded Values by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 527 W 7TH ST STE 200, 200, LOS ANGELES, CA 90014-2513 |
| Document Number | 0000001639 |
|---|---|
| Date | Jan 12, 2026 |
| Instrument | 2026000001639 |
| Name | CANADIAN IMPERIAL BANK OF COMMERCE |
|---|---|
| Type | Bank |
| Type | Building or Construction Mortgage |
|---|---|
| Amount | Amount Recorded |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | VENTURA CA |
| Recording Date | Mar 29, 2024 |
| Property Address | 4100 GUARDIAN ST, SIMI VALLEY, CA 93063-6717 |
| Document Number | 0000019729 |
| Map Reference | MB 73 PG 68&69 |
| Instrument Date | Mar 19, 2024 |
| Instrument | 2024000019729 |
| Transaction Type | Transfer |
| Record Updated | May 07, 2024 |
| Title Company | FIDELITY NATIONAL TITLE, FIDELITY NATL TTL BUILDER SV |
| Amount | Amount Recorded |
|---|---|
| Tax | $0.00 |
| Amount Accuracy | Rounded Values by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 4180 GUARDIAN STREET, CALABASAS, CA 91302 |
Source: Ventura County records · Assessment roll updated July 15, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Ventura County |
| Municipality | Simi Valley City |
| Unified School District | Simi Valley Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $25,094,135 (+2%) Land $5,908,630 Building $19,185,505 | |
| 2025 | $276,741.00 (+1.1%) | $24,602,094 (+4.04%) Land $5,792,775 Building $18,809,319 |
| 2024 | $273,728.00 (+6.1%) | |
| 2023 | $257,983.00 (-0.43%) | $23,646,765 Land $5,567,834 Building $18,078,931 |
| 2022 | $259,096.00 |
Source: FEMA National Flood Hazard Layer, Ventura County (06111C), updated September 30, 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 | Minimal |
| 500-Year Floodplain | No |
| Special Flood Hazard Area | No |
| Nearest Special Flood Hazard Area | Zone A, within 500 ft |
| Wildfire Risk | Moderate above 68% of the US · above 43% of California |
|---|---|
| Wildfire Likelihood | About 1 in 521 per year |
| Exposure | Direct burnable vegetation at the parcel |
Values are read at the parcel center point; lenders make the official flood determination.
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