580 Irwin St, San Rafael, CA 94901 Property Records

Marin County property record for 580 Irwin St, San Rafael, CA 94901

Property Summary

Property Type	General Industrial
Details	15,118 sqft · built 1965
Lot Size	0.475 acres (20,694 sqft)
Owner	Company Name on File
Last Sale	$4,700,000 (Mar 2023)
Tax Bill	$66,994 (2025)
Deeds & Mortgages	Mar 2023 Mortgage Mar 2023 Sale & Mortgage + 2 more
Flood Zone	Zone AE (high risk)
APN	`013-081-44`

Property Details

APN / Parcel Number

Primary APN	`013-081-44`

Interior

Building Area	15,118 sqft Gross Area

Exterior

Year Built	Built 1965
Effective Year Built	Effective 1965
Lot Area	20,694 sqft (0.475 acres)

Location & Zoning

Street Address	580 IRWIN ST
City	SAN RAFAEL
State	CA
Zip	94901-3945
Property Category	Industrial
Property Type	Industrial > General Industrial
Jurisdiction	MARIN CA
Township / Civil Division	SAN RAFAEL
Census Block Group	1
Census Block	1008
Census Tract	112100

Owner

580 Irwin St, an industrial property, is owned by a company that bought it in March 2023.

Source: Marin County records, as of July 14, 2026

Owner of Record	Company Name on File
Mailing Address	PO BOX 3979, SAN RAFAEL, CA 94912-3979
Owner Type	Company
Vesting	Limited Liability Company

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
Mar 22, 2023	Deed of Trust, Mortgage · SBA Mortgage BUSINESS FINANCE CAPITAL
Mar 22, 2023	Grant Deed, Transfer · Commercial Mortgage FARMERS & MERCHANTS BANK OF CENTRAL
Oct 7, 2019	Affidavit of Death, Transfer CAL LAND TITLE COMPANY, CAL LAND TITLE CO
Oct 7, 2019	Grant Deed, Transfer · Commercial Mortgage PRESIDIO BANK

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Mar 22, 2023 · Amount on File
Deed Sale	Mar 22, 2023 · Amount on File
Prior Sale	Oct 7, 2019 · Amount on File
Deed Document Number	20236295
Record Updated	Oct 29, 2026

March 2023: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	580 IRWIN ST, SAN RAFAEL, CA 94901-3945
Transaction Type	Mortgage
Record Updated	Apr 4, 2023
Title Company	CHICAGO TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	580 IRWIN ST, SAN RAFAEL, CA 94901-3945

Mortgage

Document Number	0000006298
Date	Mar 22, 2023
Instrument	2023-0006298

Lender

Name	BUSINESS FINANCE CAPITAL
Type	Lending Institution
Address	LOS ANGELES, CA 90017

Agreement

Type	SBA Mortgage
Amount	Amount on Record

March 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Mar 22, 2023
Property Address	580 IRWIN ST, SAN RAFAEL, CA 94901-3945
Document Number	0000006295
Instrument Date	Mar 13, 2023
Instrument	2023-0006295
Transaction Type	Transfer
Record Updated	Apr 4, 2023
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$14,570.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	PO BOX 3979, SAN RAFAEL, CA 94912-3979

Mortgage

Document Number	0000006296
Date	Mar 22, 2023
Instrument	2023-0006296

Lender

Name	FARMERS & MERCHANTS BANK OF CENTRAL
Type	Bank

Agreement

Type	Commercial Mortgage
Amount	Amount on Record

Mortgage

Document Number	0000006297
Date	Mar 22, 2023
Instrument	2023-0006297

Lender

Name	FARMERS & MERCHANTS BANK OF CENTRAL CA
Type	Bank
Address	LODI, CA 95241

Agreement

Type	Commercial Mortgage
Amount	Amount on Record

October 2019: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	MARIN CA
Recording Date	Oct 7, 2019
Property Address	580 IRWIN ST, SAN RAFAEL, CA 94901-3945
Document Number	0000037251
Instrument Date	Sep 19, 2019
Instrument	37251
Transaction Type	Transfer
Record Updated	Oct 18, 2019
Title Company	CAL LAND TITLE COMPANY, CAL LAND TITLE CO

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	2449 BARCELA DR BERTHOUD CO 80513, BERTHOUD, CO 80513

October 2019: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Oct 7, 2019
Property Address	580 IRWIN ST, SAN RAFAEL, CA 94901-3945
Document Number	0000037252
Instrument Date	Sep 10, 2019
Instrument	2019-0037252
Transaction Type	Transfer
Record Updated	Aug 13, 2021
Title Company	CAL LAND TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$9,145.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Trust
Address	PO BOX 2797, SAUSALITO, CA 94966-2797

Mortgage

Document Number	0000037253
Date	Oct 7, 2019
Instrument	2019-0037253

Lender

Name	PRESIDIO BANK
Type	Bank

Agreement

Type	Commercial Mortgage
Amount	Amount on Record

Interest

Rate Type	Adjustable Rate

Tax Assessment & Valuation

The 2025 property tax bill for 580 Irwin St was $66,994.

Source: Marin County assessment roll, as of July 13, 2026

Property Jurisdictions

Type	Name
State	California
County	Marin County
Municipality	San Rafael City
Elementary School District	San Rafael City Elementary School District (KG - 08)
Secondary School District	San Rafael City High School District (09 - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$4,987,640 (+2%) Land $2,122,400 Building $2,865,240
2025	$66,994.00	$4,889,880 Land $2,080,800 Building $2,809,080
2023	$43,327.00 (+5.82%)	$3,100,951 Land $2,307,318 Building $793,633
2022	$40,943.00

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

Flood

FEMA maps place 580 Irwin St in Zone AE, a high-risk flood area; flood insurance is required for federally backed loans.

Source: FEMA National Flood Hazard Layer, effective October 18, 2023 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone AE high risk
100-Year Floodplain	Yes 1% annual chance
Floodway	No
Base Flood Elevation	10.0 ft
Flood Insurance Requirement	Required federally backed loans
Flood Insurance Cost	Premium on File median of 51 policies
Nearby Flood Policies	51 in force
Nearby Flood Claims	91 (1979–2022)
Claims Outside the SFHA	2 of 91
Most Recent Claim	Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides
Claims by Event	Severe Storms, Flooding, Mudslides, And Landslides, Dec 2005 · 12 claims Severe Storms & Flooding, Feb 1986 · 20 claims Severe Storms, Flood, Mudslides & High Tide, Jan 1982 · 18 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

The area around 580 Irwin St has no burnable land within ember reach, so its wildfire risk is not rated.

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

Wildfire Risk	Not rated no burnable land 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	MARIN MUNICIPAL WATER DISTRICT serves 188,116 people · EPA ID CA2110002
Water Source	Surface water
Last State Inspection	Aug 2023
Lead	Under 1 ppb (2019–2021) 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. This system sells water to local utilities; the supplier billing this address may be one of them.

Internet Providers

Source: FCC Broadband Data Collection, based on 201 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
AT&T DSL · Fiber, Fixed Wireless in parts of the area	100 / 20

May also be available: GeoLinks, Sonic Telecom, T-Mobile, Verizon.

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