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Executive Summary

Cushman & Wakefield is pleased to present 42 Miller Avenue, a rare Owner/User/Investment opportunity in the heart of Downtown Mill Valley. Situated on an expansive ±0.56-acre parcel, this three-story freestanding building offers ±4,349 SF of flexible office space in one of Marin County's most supply constrained submarkets. Currently leased to two tenants on short term agreements, the Property offers a clear path to near term or immediate full building occupancy while generating interim income during the transition.
Owner user opportunity with 10% down for retreat center, spa, wellness, corporate office, law firm, accounting etc.
Nestled among mature redwood trees with professionally maintained landscaping, 42 Miller provides a private, campus like setting rarely found in Southern Marin. The building features abundant on site parking, multiple points of entry, an expansive second-floor deck, dramatic vaulted ceilings and large windows on the third floor, restrooms on all three floors, and a full kitchenette on the first floor. Zoned CD – Downtown Commercial and just steps from the Town Square, the Property combines a retreat-style environment with walkable access to the area's best retail and dining.
For more information, contact Brian Foster or Drew Soltis at Cushman & Wakefield.

Property Facts

Sale Type
Investment or Owner User
Property Type
Office
Property Subtype
Office/Residential
Building Size
4,349 SF
Building Class
B
Year Built
1903
Price
$3,650,000
Price Per SF
$839.27
Percent Leased
100%
Tenancy
Multiple
Building Height
3 Stories
Typical Floor Size
1,450 SF
Building FAR
0.18
Lot Size
0.56 AC
Zoning
CN, Mill Valley - Potential Development opportunity for up to twenty residential units with city approvals
Parking
13 Spaces (2.99 Spaces per 1,000 SF Leased)
Fairly walkable
40/100
Very drivable
80/100
Minimal public transit
10/100
Fairly bikeable
50/100

Property Taxes

Property Taxes

Parcel Number
028-063-18
Land Assessment
$1,136,517
Improvements Assessment
$901,375
Total Assessment
$2,037,892
  • Listing ID: 39992964

  • Date on Market: 4/1/2026

  • Last Updated:

  • Address: 42 Miller Ave, Mill Valley, CA 94941

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