399 Marion Avenue, Mill Valley

Jun 6

Sold for $2,500,000
3 Bedrooms | 3 Bathrooms | 2,080± Sq Ft | 0.26± Acre Lot
Represented by Susannah Searson

Treetop Views, Two Parcels, Endless Potential — A Private Forest Retreat.

This three-bedroom, two-bathroom home sits among towering redwoods on a quiet Mill Valley street, close enough to town, schools, and parks to feel connected, private enough to feel like its own retreat.

The main level opens up right away. Living, dining, and kitchen flow together in one open layout, with oversized windows and skylights pulling in natural light from every angle. The chef's kitchen has granite counters, custom wood cabinetry, and a big island built for homework and casual meals. Two decks off the main and rear give you treetop views and easy indoor-outdoor living, morning coffee in the trees, dinner under the canopy.

Downstairs, the primary suite is its own sanctuary, with a private deck and a newly renovated bath that doesn't hold back: deep porcelain soaking tub, heated shower floors, multiple shower heads, custom teak detailing, and a gray water system that feeds the redwoods outside. The third bedroom is just as flexible, with a built-in office nook, custom Murphy bed, and floor-to-ceiling windows looking out over the terraced garden.

The real value-add is in the lot itself. Two parcels on one APN, street-to-street, with separate access from Florence Street. That's ADU potential built right in, guest suite, au pair setup, home office, or future rental income.

Steps from the Dipsea Trail stairs and minutes from downtown Mill Valley, this one delivers what's hard to find together: privacy, nature, and everyday livability.

Living the Mill Valley Lifestyle

There’s something special about life in Mill Valley — the way mornings start with mist rolling off Mount Tam and end with dinner under the redwoods. From trailheads to coffee at The Depot, it’s a town that balances small-town charm with big character. You’re minutes from local favorites like Playa Mill Valley, Hook Fish Co., and Equator Coffees, plus endless hikes, coastal escapes, and a community that knows how to slow down and live well.

Explore the Mill Valley Guide for our edit of where to eat, shop, and get outside — plus local schools, hidden gems, and everything that makes this town feel like home.