A rare opportunity in the heart of downtown Mill Valley, 34 Sunnyside Avenue offers a unique blend of historic character, residential living, and income-producing potential. Originally built in 1908 as a single-family residence, the property has thoughtfully evolved into a versatile mixed-use building featuring three residential unitsa spacious 3-bedroom, 2-bath residence, a charming 1-bedroom, 1-bath apartment, and a studioalongside two street facing retail spaces that contribute to the vibrant downtown atmosphere. Whether you’re seeking a primary residence with supplemental rental income, a multi-generational living opportunity, or a fully leased investment property with strong cash flow, this exceptional property offers remarkable flexibility. Tucked behind the building is convenient off-street parking and a private outdoor entertaining area, creating a peaceful retreat just steps from Mill Valley’s renowned restaurants, boutiques, cafs, parks, and trails.
Listing Provided Courtesy of Chris Glave at Compass
Property Details
Price:
$3,995,000
MLS #:
326070197
Status:
Active
Beds:
5
Baths:
6
Type:
Single Family
Subtype:
Single Family Residence
Neighborhood:
millvalley
Finished Sq Ft:
3,354
Lot Size:
3,960 sqft / 0.09 acres (approx)
Year Built:
1906
See this Listing
Schools
School District:
Mill Valley
Interior
Bathrooms
4 Full Bathrooms
Cooling
None
Fireplaces Total
1
Heating
Central
Laundry Features
Dryer Included, Washer Included
Levels
Two
Exterior
Direction Faces
West
Exterior Features
Uncovered Courtyard
Fencing
Back Yard, Partial
Green Energy Efficient
Appliances
Lot Features
See Remarks
Other Structures
Storage
Parking Features
Uncovered Parking Spaces 2+, Other
Parking Spots
4
Parking Total
4
Patio And Porch Features
Back Porch, Uncovered Deck, Uncovered Patio
Roof
Composition
Security Features
Carbon Monoxide Detector(s), Smoke Detector(s)
Stories
2
View
Other
Financial
Map
Community
- Address34 Sunnyside 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 Aug 24, 2026
28
Single Family Listed
25
Avg DOM
1,045
Avg $ / SqFt
$2,229,032
Avg List Price
Property Summary
- 34 Sunnyside Avenue Mill Valley CA is a Single Family for sale in Mill Valley, CA, 94941. It is listed for $3,995,000 and features 5 beds, 6 baths, and has approximately 3,354 square feet of living space, and was originally constructed in 1906. The current price per square foot is $1,191. The average price per square foot for Single Family listings in Mill Valley is $1,045. The average listing price for Single Family in Mill Valley is $2,229,032.
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Copyright 2026, Bay Area Real Estate Information Services, Inc. All Rights Reserved. Listing courtesy of Chris Glave at Compass
34 Sunnyside Avenue
Mill Valley, CA


