421 Elm Ave, Larkspur, CA 94939 Property Records

Marin County property record for 421 Elm Ave, Larkspur, CA 94939

Property Summary

Property Type	Single Family Home
Details	4 bd · 2.5 ba · 2,229 sqft · built 1948
Lot Size	0.207 acres (9,000 sqft)
Owner	2 Trust Names on File
Last Sale	$2,615,000 (Jul 2019)
Tax Bill	$36,263 (2025)
Deeds & Mortgages	Sep 2019 Mortgage Jul 2019 Sale
Flood Zone	Zone X (minimal risk)
APN	`021-223-09`

Property Details

APN / Parcel Number

Primary APN	`021-223-09`

Interior

Bedrooms	4 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Building Area	2,229 sqft Living Area

Exterior

Year Built	Built 1948
Effective Year Built	Effective 1998
Architectural Style	Contemporary
Lot Area	9,000 sqft (0.207 acres)
Garage Area	420 sqft
Parking Spaces	2 Parking Spaces
Deck Area	189 sqft
Patio Area	302 sqft

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	421 ELM AVE
City	LARKSPUR
State	CA
Zip	94939-2042
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Subdivision	PALM HILL SUB A BALTIMORE PK
Jurisdiction	MARIN CA
Township / Civil Division	ROSS VALLEY
Census Block Group	1
Census Block	1000
Census Tract	120002

Owner

421 Elm Ave is owner-occupied and held in a trust since July 2019.

Source: Marin County records, as of October 21, 2026

Owner of Record	2 Trust Names on File
Mailing Address	421 ELM AVE, LARKSPUR, CA 94939-2042
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Living Trust

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
Sep 30, 2019	Deed of Trust, Mortgage · Conventional Mortgage UBS BANK USA
Jul 31, 2019	Grant Deed, Transfer OLD REPUBLIC TITLE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 31, 2019 · Amount on File
Deed Sale	Jul 31, 2019 · Amount on File
Prior Sale	Mar 12, 2013 · Amount on File
Deed Document Number	201927001
Prior Transfer Date	Mar 3, 2010
Prior Transfer Doc	0000012040
Record Updated	Oct 29, 2026

September 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	421 ELM AVE, LARKSPUR, CA 94939-2042
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	OLD REPUBLIC TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000036049
Date	Sep 30, 2019
Instrument	2019-0036049

Lender

Name	UBS BANK USA
Type	Bank
Address	SALT LAKE CITY, UT 84111

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Oct 1, 2049

Interest

Rate Type	Adjustable Rate
Rate	2.87%
Type Change Date	Oct 1, 2029
Change Frequency	Annually
Min Rate At Change	2.25%
Max Rate At Change	7.87%
Index	1-Year LIBOR
Max Rate	7.87%

July 2019: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Jul 31, 2019
Property Address	421 ELM AVE, LARKSPUR, CA 94939-2042
Document Number	0000027001
Instrument Date	Jul 25, 2019
Instrument	27001
Transaction Type	Transfer
Record Updated	Aug 8, 2019
Title Company	OLD REPUBLIC TITLE

Transaction

Amount	Amount on Record
Tax	$2,876.50
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	421 ELM AVE LARKSPUR CA 949392042, LARKSPUR, CA 94939-2042

Tax Assessment & Valuation

The 2025 property tax bill for 421 Elm Ave was $36,263.

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

Property Jurisdictions

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

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$2,917,032 (+2%) Land $1,729,025 Building $1,188,007
2025	$36,263.00	$2,859,841 Land $1,695,126 Building $1,164,715
2023	$34,332.00 (+0.97%)	$2,748,809 Land $1,629,313 Building $1,119,496
2022	$34,003.00

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

Flood

FEMA maps place 421 Elm Ave in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 2014.

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

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on File median of 23 policies
Nearby Flood Policies	23 in force
Nearby Flood Claims	2 (2014–2017)
Most Recent Claim	Jan 2017 · Severe Winter Storms, Flooding, And Mudslides

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 421 Elm Ave is low, with a 0.01% annual chance of wildfire.

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

Wildfire Risk	Low lower than 80% of the US · lower than 88% of California
Wildfire Likelihood	0.01% annual chance
Exposure	Direct burnable vegetation

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 416 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
T-Mobile Fixed Wireless	100 / 20
AT&T DSL · Fiber in parts of the area	100 / 20

May also be available: Verizon.

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