2. 9 Shell Rd Mill Valley CA
9 Shell Rd Mill Valley CA

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9 Shell Rd Mill Valley, CA

9 Shell Rd Mill Valley, CA 94941 was built in 1941 The property has a lot size of 7,150 Sq Ft lot and is listed as a Single Family. The property is currently not for sale. Current estimates place the value near 1,853,000, reflecting a -16% change over the past year, with 4 beds, 2 baths, and approximately 2,008 sq ft of living space. If you are looking to buy or rent a property, use USPhoneBook's property database to avoid rental scams, understand tax liabilities, and get a sense of the property's value over time. You can also check out the neighborhood section and see nearby homes, last sold for prices, tax records and more.
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Public Facts

 
Last sold Mar 11, 2025
4
Beds
2
Baths
2,008
Sqft
Off Market
$1,853,000 estimated value
Built in 1941
$923/sqft
7,150 lot sqft

Property characteristics

Property type
Residential
Zoning type
Single Family
APN
033-073-06
Parking
2
Subdivision
Alto 02
Heating
Central
Stories
1

Property History

Over the last 12 months, the sales price of 9 Shell Rd Mill Valley, CA 94941 has decreased by -16%.

Price History

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Year Price Price/Sq Ft
2026 $ 1,871,000 -16 % $ 932
2025 $ 2,254,000 8 % $ 1,123
2024 $ 2,085,000 -5 % $ 1,038
2023 $ 2,204,000 14 % $ 1,098
2022 $ 1,923,000 41 % $ 958
2021 $ 1,362,000 ---- $ 678

Tax History

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Year Taxes Assesments
2026 ---- $ 687,200
2025 $ 11,213 18 %
2024 $ 9,477 1 % $ 660,519
2023 $ 9,340 -7 % $ 647,569
2022 $ 10,101 ---- $ 614,316
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Owner

Devin Massanti Devin Patrick Massanti , Age 29

Lives at 9 Shell Rd, Mill Valley, CA 94941-1507
Relatives: Irene Casserly, Luigi Massanti, Michela Massanti, Nila Massanti, Alexandra Casserly, David Casserly, Ellen Martinez, Joan Casserly
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People Living at 9 Shell Rd Mill Valley, CA

Devin Massanti Devin Patrick Massanti , Age 29

Lives at 9 Shell Rd, Mill Valley, CA 94941-1507 Mill Valley CA 94941 9 Shell Rd
Prior addresses: 412 5th ST, Montara, CA 94037-9831 Montara CA 94037 412 5th ST
Relatives: Irene Casserly, Luigi Massanti, Michela Massanti, Nila Massanti, Alexandra Casserly, David Casserly, Ellen Martinez, Joan Casserly
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Luigi Massanti Luigi G Massanti , Age 71

Lives at 9 Shell Rd, Mill Valley, CA 94941-1507 Mill Valley CA 94941 9 Shell Rd
Prior addresses: 412 5th ST, Montara, CA 94037-9831 Montara CA 94037 412 5th ST 1360 Chestnut ST, San Francisco, CA 94123-3106 San Francisco CA 94123 1360 Chestnut ST
Relatives: Devin Massanti, Irene Casserly, Michela Massanti, Nila Massanti, Rosalba Massanti, Rosalba Petrini, Alexandra Casserly, Alibrando Petrini, Christopher Petrini
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David Finnen David Ira Finnen , Age 95

Lives at 1338 Oregon Dr, Concord, CA 94521-4640 Concord CA 94521 1338 Oregon Dr
Prior addresses: 354 W Whittier Ave, Tracy, CA 95376-2532 Tracy CA 95376 354 W Whittier Ave 1338 Oregon Dr, Apt 1, Concord, CA 94521-4640 Concord CA 94521 1338 Oregon Dr, Apt 1 2523 Eagle Ave, Alameda, CA 94501-1526 Alameda CA 94501 2523 Eagle Ave
Relatives: Marta Finnen, David Finnen, Eloisa Finnen, James Finnen, Alexa Finnen, Elsa Finnen, Albert Cisneros, Ana Gault, Armandina Law
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Irene Casserly Irene M Casserly , Age 65

Lives at 9 Shell Rd, Mill Valley, CA 94941-1507 Mill Valley CA 94941 9 Shell Rd
Prior addresses: 23939 Oxbow LN S, Sonora, CA 95370 Sonora CA 95370 23939 Oxbow LN S 2361 32nd Ave, San Francisco, CA 94116-2207 San Francisco CA 94116 2361 32nd Ave 140 Evelyn WAY, San Francisco, CA 94127-1731 San Francisco CA 94127 140 Evelyn WAY
Relatives: Alexandra Casserly, David Casserly, Devin Massanti, Ellen Martinez, Irene Casserly, Joan Casserly, Liam Casserly, Luigi Massanti, Michela Massanti
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Marco Bianchi Marco G Bianchi , Age 64

Lives at 305 Wildwood Dr, S San Fran, CA 94080-5823 S San Fran CA 94080 305 Wildwood Dr
Prior addresses: 3245 Mangosta Ct, Sparks, NV 89436-7430 Sparks NV 89436 3245 Mangosta Ct 8947 El Mirador Dr, Apt 4, Elk Grove, CA 95624-2333 Elk Grove CA 95624 8947 El Mirador Dr, Apt 4
Relatives: Gabriella Bianchi, Aaron Bianchi, Alyssa Bianchi, Giordano Bianchi, Julie Bianchi, Marco Bianchi, Alessandro Vincenzi, Amanda Highland, Amerigo Vincenzi
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Joshua Kimbrough Joshua P Kimbrough , Age 52

Lives at 2626 Las Gallinas Ave, San Rafael, CA 94903-1425 San Rafael CA 94903 2626 Las Gallinas Ave
Prior addresses: 820 Mission Ave, Apt 5, San Rafael, CA 94901-3250 San Rafael CA 94901 820 Mission Ave, Apt 5 955 Via Casitas, Greenbrae, CA 94904-1823 Greenbrae CA 94904 955 Via Casitas
Relatives: Veronica Kimbrough, Carol Mino, Efrain Mino, Leta Vanspronsen, Rachel Swart, Aaron Miller, Andrew Swart, Anthony Vanpraag, Cheryl Rohrbaugh
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Kevin Reidy Kevin Lane Reidy , Age 74

Lives at 3430 Arborwoods Dr, Johns Creek, GA 30022-5283 Johns Creek GA 30022 3430 Arborwoods Dr
Prior addresses: 9065 Jill Dr, Conifer, CO 80433-9709 Conifer CO 80433 9065 Jill Dr 3430 Arborwoods Dr, Alpharetta, GA 30022-5283 Alpharetta GA 30022 3430 Arborwoods Dr 2 Elliot Ct, Pleasant Hill, CA 94523-3641 Pleasant Hill CA 94523 2 Elliot Ct
Relatives: Nancy Reidy, Christopher Reidy, Timothy Reidy, Christopher Griffith, James Reidy, Kathleen Slane, Kevin Reidy, Kristin Reidy, Meghan Randall
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Neighbors

7 Shell Rd
Mill Valley, CA
View Property Report
13 Shell Rd
Mill Valley, CA
View Property Report
15 Shell Rd
Mill Valley, CA
View Property Report
5 Shell Rd
Mill Valley, CA
View Property Report

FAQs

Who lives at 9 Shell Rd, Mill Valley, CA 94941?
According to our records, the current person living in 9 Shell Rd is Devin Massanti.
Is this property currently for sale?
The property is not for sale. Use USPhoneBook to review nearby listings or compare similar homes in the area.
What is the estimated value of this property?
The estimated value is $1,853,000, reflecting a -16% change over the past year. You can explore price history and tax records to see how the value has changed over time.
How big is this property?
It features approximately 2,008 sq ft of living space on a 7,150 sq ft lot, built in 1941 and classified as a Single Family.
What nearby properties can I compare this to?
Nearby homes include 7 Shell Rd, 13 Shell Rd, and 15 Shell Rd, each with its own property report to help compare size, value, and residents.