New construction modern farmhouse with ADU and expansive level grounds in one of Mill Valley’s most desirable locations. 308 Marin Avenue offers a rare blend of design, functionality, and flexibilityideal for today’s lifestyle. The property spans approximately 2,599 sq ft (per measurements) and includes a 4BR/2.5BA main residence plus an attached ADU above the garage. The main home features a light-filled kitchen that flows seamlessly into open living spaces and a generous family room, ideal as a media room, playroom, or secondary lounge. A well-appointed pantry and dedicated laundry room add everyday convenience. Large openings create a seamless indoor-outdoor connection to expansive front and rear yards with substantial, level lawn areasan increasingly rare offering in Mill Valleyperfect for entertaining, recreation, or relaxation. The attached ADU provides a fully independent living space, ideal for guests, extended family, a home office, or potential income. Clean lines, warm finishes, and a functional layout define the home’s modern farmhouse aesthetic, all just moments from downtown Mill Valley, award-winning schools, and premier outdoor access.
Property Details
Price:
$2,995,000
MLS #:
326031042
Status:
Active
Beds:
4
Baths:
4
Type:
Single Family
Subtype:
Single Family Residence
Neighborhood:
millvalley
Finished Sq Ft:
2,599
Lot Size:
6,599 sqft / 0.15 acres (approx)
See this Listing
Schools
Interior
# of Fireplaces
1
Basement
None
Cooling
Ductless, Multi Units
Fireplace Features
Electric
Full Bathrooms
3
Half Bathrooms
1
Heating
Ductless, Multi Units
Laundry Features
Dryer Included, Inside Room, Washer Included
Levels
Two
Exterior
Lot Features
Other
Parking Features
Attached, Garage Facing Front
Pool
No
Stories
2
Financial
HOA
No
Map
Community
- Address308 Marin Avenue Mill Valley CA
- CityMill Valley
- CountyMarin
- Zip Code94941
Subdivisions in Mill Valley
Market Summary
Current real estate data for Single Family in Mill Valley as of Apr 14, 2026
12
Single Family Listed
16
Avg DOM
1,197
Avg $ / SqFt
$3,467,083
Avg List Price
Property Summary
- 308 Marin Avenue Mill Valley CA is a Single Family for sale in Mill Valley, CA, 94941. It is listed for $2,995,000 and features 4 beds, 4 baths, and has approximately 2,599 square feet of living space.The current price per square foot is $1,152. The average price per square foot for Single Family listings in Mill Valley is $1,197. The average listing price for Single Family in Mill Valley is $3,467,083.
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Copyright 2026, Bay Area Real Estate Information Services, Inc. All Rights Reserved. Listing courtesy of Susan Hewitt at Golden Gate Sotheby’s International Realty
308 Marin Avenue
Mill Valley, CA


