61 Camino Alto
1,200 SF for sublease in Mill Valley, CA.
Sub-1,500 SF spaces rarely surface along the Camino Alto corridor. Marin County retail vacancy sits at just 3.4% – the tightest of any North Bay county – so a clean 1,200 SF suite in this location is a genuine scarcity play for a right-sized user.
As a sublease, the space offers a shorter, more negotiable commitment than a direct lease – well suited to a tenant that wants to test the affluent Mill Valley market, bridge a build-out elsewhere, or avoid a long-term obligation while still landing in a high-barrier submarket.
The building's available suites feature recently renovated interiors – full glass storefronts, open ceilings with updated lighting, and operable windows with mountain views – reducing the move-in cost and downtime typically associated with a small commercial space.
The property sits in an established neighborhood center alongside Safeway, Starbucks, and Golden Gate Pediatrics/Stanford Medicine Children's Health, with 18 shared on-site parking spaces and immediate access to Highway 101 – daily traffic and convenience a standalone storefront can't easily replicate.
Building specifications
Mill Valley's Camino Alto Corridor
Camino Alto is one of Mill Valley's principal commercial spines, linking downtown Mill Valley and the Tam Valley/Almonte area to Highway 101 via East Blithedale and Tamalpais Valley/Almonte Boulevard. The corridor is anchored by a Safeway-anchored neighborhood center and mixes office, medical, and small-format retail serving one of Marin County's most affluent residential bases – daily convenience trade rather than regional draw, which supports steady, resilient demand for well-located small suites.
Marin County is a persistently high-barrier-to-entry market: hillside topography, strict local land-use controls, and very little available land for new commercial construction keep supply structurally constrained. That scarcity, combined with above-average household incomes across Mill Valley and greater Southern Marin, is a large part of why the county's retail vacancy has stayed among the lowest in the Bay Area even as neighboring submarkets have loosened.
Southern Marin Leasing Holds Up as County Office Vacancy Rises, Retail Stays Tight
Newmark's Q1 2026 Marin County office market report put countywide office vacancy at 19.1%, but net absorption was still positive at roughly 41,266 SF for the quarter. Southern Marin was a bright spot: Wonderhouse Properties LLC's 7,082 SF direct lease at 55 Sunnyside Avenue in Mill Valley was the largest direct deal of the quarter, and Teijin Holdings USA leased 6,361 SF at 1 Harbor Drive – evidence that well-located Southern Marin space, even in a soft office cycle, continues to attract committed tenants.
Retail tells a tighter story. Cushman & Wakefield's San Francisco/North Bay MarketBeat for Q2 2025 recorded Marin County retail vacancy at just 3.4% – the lowest of any North Bay county – against an average asking rent of $38.44/SF NNN. For a small, flexible sublease space like this one, that combination of scarce retail-adjacent inventory and a softer, negotiable office-sublease rate structure is a favorable set-up for a tenant looking to secure ground in Mill Valley without over-committing.
Source: Newmark, Marin County, California Office Market Report (Q1 2026); Cushman & Wakefield, San Francisco/North Bay Retail MarketBeat (Q2 2025)
How we'd position this listing
This is a scarcity-driven opportunity: a small, move-in-ready suite in a submarket where retail vacancy has stayed near record lows and available commercial land is essentially fixed. The sublease structure lowers the barrier to entry further, giving a tenant a shorter runway to prove out the location before committing to a longer direct term.
Given the flexible zoning (office, retail, or medical use), the building's shared parking and Highway 101 access, and the built-in traffic from co-tenants like Safeway and Golden Gate Pediatrics, we'd expect a well-priced sublease at this address to move quickly – prospective tenants should confirm remaining lease term and any landlord consent requirements early in the process.
Get rent roll detail, floor plans, and comparable sales for 61 Camino Alto.
Let's talk about 61 Camino Alto.
jida@lee-associates.com
Brendan Gallagher — (760) 846-1736
242 California St, San Francisco, CA 94111