90 Walnut Avenue

Set in the heart of Sycamore Park, one of Mill Valley’s most sought-after neighborhoods, 90 Walnut Avenue is a newly completed custom residence where thoughtful architecture, craftsmanship, and material integrity come together in a home designed to endure for generations.

Completed in 2024 after a meticulous multi-year process of design, planning, and construction, the home reflects a deeply intentional vision brought to life by Urban Building Workshop and Tamalpais Construction. Every detail was carefully considered—from the flow of the spaces to the warmth and texture of the finishes selected throughout.

Spanning approximately 2,292 square feet, the residence is centered around a dramatic great room with soaring 14-foot vaulted ceilings that unify the kitchen, dining, and living spaces. A 16-foot sliding pocket door dissolves the boundary between indoors and out, opening directly to a deck with a gas fire feature and a level, landscaped backyard designed for effortless entertaining and everyday living.

The kitchen is both refined and functional, anchored by an oversized island, custom cabinetry, and an intimate banquette dining area. Curated finishes and fixtures elevate the space, including deVOL fittings from England, an Italian ILVE six-burner range, a built-in Sub-Zero refrigerator, honed Carrara marble, handmade Moroccan tile, and wide-plank oak flooring.

Designed with flexibility and longevity in mind, the home offers three bedrooms, three baths, and a dedicated office that can easily function as a fourth bedroom. The primary suite is thoughtfully positioned on the main living level and serves as a private retreat, complete with a spa-like bath featuring a soaking tub, limestone cobble flooring, dual vanities, and a generous walk-in closet.

Additional highlights include air conditioning, a one-car garage with driveway parking, peaceful rooftop terrace moments, and glimpses of Mt. Tam. Professionally designed landscaping has matured beautifully to create privacy, softness, and a serene natural setting throughout the property.

A rare opportunity to experience the quality and intention of newly constructed living in one of Mill Valley’s most established and beloved neighborhoods.

This property is being syndicated on the following platforms: Realtor.com, Redfin, Zillow, Trulia, Compass, and Homes.com.