186 Prospect Ave, Ross, CA 94957 Property Records

Marin County property record for 186 Prospect Ave, Ross, CA 94957

Property Summary

Property Type	Single Family Home
Details	4 bd · 3.5 ba · 2,496 sqft · built 1913
Lot Size	0.331 acres (14,400 sqft)
Owner	2 Trust Names on File
Last Sale	$5,300,000 (Apr 2025)
Tax Bill	$48,393 (2025)
Deeds & Mortgages	Mar 2022 Mortgage Oct 2021 Mortgage + 5 more
Flood Zone	Zone X (minimal risk)
APN	`072-152-01`

Property Details

APN / Parcel Number

Primary APN	`072-152-01`

Interior

Bedrooms	4 Beds
Full Baths	3.5 Baths
Half Baths	1 Half Bath
Building Area	2,496 sqft Living Area
Basement Area	120 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1913
Effective Year Built	Effective 2010
Architectural Style	Contemporary
Lot Area	14,400 sqft (0.331 acres)
Garage Area	283 sqft
Parking Spaces	1 Parking Space
Deck Area	173 sqft
Patio Area	173 sqft

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	186 PROSPECT AVE
City	ROSS
State	CA
Zip	94957
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	MAP C1 586
Legal Subdivision	WINSHIP PARK
Legal Lot Number	B
Jurisdiction	MARIN CA
Township / Civil Division	ROSS VALLEY
Census Block Group	1
Census Block	1008
Census Tract	118100

Owner

186 Prospect Ave is held in a trust since April 2025.

Source: Marin County records, as of July 13, 2026

Owner of Record	2 Trust Names on File
Mailing Address	PO BOX 1103, ROSS, CA 94957-1103
Owner Type	Company
Vesting	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
Mar 23, 2022	Deed of Trust, Mortgage · Commercial Mortgage COMERICA BANK
Oct 18, 2021	Intrafamily Transfer, Transfer · Conventional Mortgage COMERICA BANK
Nov 5, 2020	Grant Deed, Transfer · Conventional Mortgage COMERICA BANK
May 13, 2020	Quit Claim Deed, Transfer ATTORNEY ONLY
Jun 26, 2017	Grant Deed, Transfer · ARM COMERCIA BANK
Apr 13, 2017	Grant Deed, Transfer FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE COMPANY
Apr 13, 2017	Quit Claim Deed, Transfer FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE COMPANY

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Apr 15, 2025 · Amount on File
Deed Sale	Apr 15, 2025 · Amount on File
Prior Sale	Nov 5, 2020 · Amount on File
Deed Document Number	202510214
Prior Transfer Date	Apr 18, 1995
Prior Transfer Doc	0000020692
Record Updated	Oct 29, 2026

March 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	186 PROSPECT AVE, ROSS, CA 94957
Transaction Type	Mortgage
Record Updated	Jul 11, 2023
Title Company	NOT AVAILABLE, DOMA TITLE OF CALIFORNIA INC

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	186 PROSPECT AVE, ROSS, CA 94957

Mortgage

Document Number	0000012765
Date	Mar 23, 2022
Instrument	2022-0012765

Lender

Name	COMERICA BANK
Type	Bank
Address	LIVONIA, MI 48152

Agreement

Type	Commercial Mortgage
Amount	Amount on Record

October 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	MARIN CA
Recording Date	Oct 18, 2021
Property Address	186 PROSPECT AVE, ROSS, CA 94957
Document Number	0000063542
Instrument Date	Sep 16, 2021
Instrument	2021-0063542
Transaction Type	Transfer
Record Updated	Jun 7, 2023
Title Company	FIDELITY NATL TTL ORANGE CNT

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Living Trust
Address	PO BOX 26, ROSS, CA 94957-0026

Mortgage

Document Number	0000063543
Date	Oct 18, 2021
Instrument	2021-0063543

Lender

Name	COMERICA BANK
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Nov 1, 2051

Interest

Rate Type	Adjustable Rate
Rate	3%
Type Change Date	Nov 1, 2026
Change Frequency	6 Months
Min Rate At Change	3%
Max Rate At Change	5%
Index	Other
Max Rate	8%

November 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Nov 5, 2020
Property Address	186 PROSPECT AVE, ROSS, CA 94957
Document Number	0000055039
Instrument Date	Jul 5, 2020
Instrument	2020-0055039
Transaction Type	Transfer
Record Updated	Jul 21, 2022
Title Company	FIDELITY NATIONAL TITLE CO

Transaction

Amount	Amount on Record
Tax	$1,567.50
Amount Accuracy	Rounded by County

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	186 PROSPECT AVE, ROSS, CA 94957

Mortgage

Document Number	0000055040
Date	Nov 5, 2020
Instrument	2020-0055040

Lender

Name	COMERICA BANK
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Dec 1, 2050

Interest

Rate Type	Adjustable Rate
Rate	3.37%
Type Change Date	Dec 1, 2035
Change Frequency	Annually
Min Rate At Change	2.25%
Max Rate At Change	8.37%
Index	1-Year LIBOR
Max Rate	8.37%

May 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	MARIN CA
Recording Date	May 13, 2020
Property Address	186 PROSPECT AVE, ROSS, CA 94957
Document Number	0000018872
Instrument Date	Mar 26, 2020
Instrument	18872
Transaction Type	Transfer
Record Updated	May 25, 2020
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	186 PROSPECT AVE ROSS CA 94957, ROSS, CA 94957

June 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Jun 26, 2017
Property Address	186 PROSPECT AVE, ROSS, CA 94957
Document Number	0000025441
Instrument Date	May 27, 2017
Instrument	2017-0025441
Transaction Type	Transfer
Record Updated	Jul 21, 2022
Title Company	FIDELITY NATIONAL TITLE

Transaction

Amount	Amount on Record
Tax	$0.00
Amount Accuracy	Rounded by County

Transferred From (Grantor/Seller)

Name	Verified Name
Address	00000

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	222 DONAHUE ST, SAUSALITO, CA 94965-1028

Mortgage

Document Number	0000025442
Date	Jun 26, 2017
Instrument	2017-0025442

Lender

Name	COMERCIA BANK
Type	Non-Lending Institution

Agreement

Type	ARM
Amount	Amount on Record
Term	361 Months
Due	Jul 1, 2047

Interest

Rate Type	Adjustable Rate
Rate	3.87%
Type Change Date	Aug 1, 2024
Change Frequency	Annually
Min Rate At Change	2.25%
Max Rate At Change	8.87%
Index	1-Year LIBOR
Max Rate	8.87%

April 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Apr 13, 2017
Property Address	186 PROSPECT AVE, ROSS, CA 94957
Document Number	0000015002
Instrument Date	Apr 6, 2017
Instrument	15002
Transaction Type	Transfer
Record Updated	Apr 24, 2017
Title Company	FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE COMPANY

Transaction

Amount	Amount on Record
Tax	$3,712.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Separate Estate/Property
Address	1801 WEDEMEYER ST #221 SAN FRANCISCO CA 941295277, 221, SAN FRANCISCO, CA 94129-5277

April 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	MARIN CA
Recording Date	Apr 13, 2017
Property Address	186 PROSPECT AVE, ROSS, CA 94957
Document Number	0000015003
Instrument Date	Apr 3, 2017
Instrument	15003
Transaction Type	Transfer
Record Updated	Apr 24, 2017
Title Company	FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE COMPANY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Separate Estate/Property
Address	186 PROSPECT AVE ROSS CA 94957, ROSS, CA 94957

Tax Assessment & Valuation

The 2025 property tax bill for 186 Prospect Ave was $48,393.

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

Property Jurisdictions

Type	Name
State	California
County	Marin County
Municipality	Ross Town
Elementary School District	Ross 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		$5,400,900 (+41.49%) Land $2,040,000 Building $3,360,900
2025	$48,393.00 Homeowner's exemption	$3,817,035 Land $2,254,190 Building $1,562,845
2023	$46,200.00 (+7.67%) Homeowner's exemption	$3,668,837 (+7.45%) Land $2,166,670 Building $1,502,167
2022	$42,910.00 Homeowner's exemption	$3,414,452 Land $2,028,060 Building $1,386,392

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

Flood

FEMA maps place 186 Prospect Ave in Zone X, an area of minimal flood risk, though there have been 19 flood claims nearby since 1982.

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
Community Rating System	Class 8 (10% premium discount)
Nearby Flood Policies	9 in force
Nearby Flood Claims	19 (1982–2011)
Claims Outside the SFHA	7 of 19
Most Recent Claim	Feb 2011 · rainfall accumulation
Claims by Event	Severe Storms, Flooding, Mudslides, And Landslides, Jan 2006 · 9 claims Severe Storms, Flood, Mudslides & High Tide, Jan 1982 · 4 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

Wildfire risk around 186 Prospect Ave is low, with a 0.02% 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	0.02% 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 280 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · Fixed Wireless, DSL in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20

May also be available: T-Mobile, Unwired.

Cell Coverage

5G (outdoors only) and 4G LTE

Nearby Properties on Prospect Ave

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