2 Upper Alcatraz PI

Mill Valley’s Pinnacle of Sustainable Luxury

2 Upper Alcatraz Place | Mill Valley, CA

At the intersection of architectural brilliance, environmental innovation, and rare walkable seclusion lies 2 Upper Alcatraz Place—a Net Zero certified compound unlike anything else in Mill Valley. Designed for those who value craftsmanship, cutting-edge sustainability, and panoramic views, this extraordinary property redefines the standard for luxury living in Marin.

Positioned above downtown Mill Valley on a private cul-de-sac shared with just six other homes, this newly built, multi-structure estate features:

• 3,610 sq ft all-electric main residence across three levels

• 519 sq ft legal ADU with private entrance, EV parking, and terrace

• 504 sq ft garage with dual EV chargers and custom cabinetry

• 325 sq ft secure storage

• 505 sq ft outdoor terrace with fire pit, BBQ, and outdoor living spaces

Every detail—from the hand-built floating staircase to the rooftop all-season turf terrace with integrated speakers—has been considered, refined, and executed at the highest level.

Signature Features:

Unrivaled Views & Location

• Expansive, unobstructed panoramas from Mt. Tam to the San Francisco skyline, Alcatraz, and the Bay

• No neighboring rooftops or power lines in view—only nature, sky, and city

• Walkable to downtown Mill Valley in minutes via historic stairway SLP #51 at the end of the street

• Located in one of Mill Valley’s quietest and most private enclaves

Architectural Artistry

• A 35-foot vertical slate feature wall and trapezoidal floating stair anchor the home's central volume

• Custom Shinoki oak cabinetry and a Louis Poulsen Artichoke chandelier elevate the entry experience

• Frameless window and door detailing and floor-to-ceiling glass maximize transparency and light

• Exterior and interior spaces designed around three mature redwoods for grounded elegance

Forward-Thinking Sustainability

• Mill Valley’s first Positive Energy / Net Zero new construction home

• 27-panel 9.9 kWh solar array with 35 kWh on-site battery storage—grandfathered into PG&E’s NEM 2.0

• Rainwater harvesting (7,500 gallons) and graywater irrigation system

• Three planted green roofs for passive cooling and stormwater absorption

• Ultra-efficient aerobarrier-sealed envelope, spray foam insulation, and ZIP panel system

• Concrete with fly ash blend for reduced carbon impact

Smart Home Integration

• Control4 whole-home automation: security, shades, lighting, audio/visual, and climate

• Lutron programmable lighting and motorized shades in every room

• Schneider Wiser energy tracking system monitors real-time electric usage

• Water leak detection and auto shut-off system for risk-free living

• Five-zone HVAC system with dual air exchangers to refresh air every 90 minutes

Indoor-Outdoor Harmony

• Dramatic 25-ft, 5-panel La Cantina sliding doors disappear into a wall pocket, connecting the main living space to a sprawling outdoor terrace

• 505 sq ft terrace outfitted with Paloform gas firepit, built-in seating, dining area, and BBQ station

• Rooftop artificial grass yard with built-in speaker system—perfect for play or yoga

Primary Suite & Private Retreats

• Full-floor penthouse-level primary suite with:

• Dimplex vapor fireplace

• Built-in cabinetry and storage

• Heated marble floors

• Electric Mirror TVs embedded in vanities

• Frameless glass walls framing the SF skyline

• Three ensuite bedrooms on the lower level

• Additional family room with glass sliders to outdoor turf yard

• Custom 285-bottle wine cellar with WhisperKool climate system

• Light-filled office/library  nook with custom shelving and cantilevered deck

ADU & Additional Amenities

• Fully legal, never-lived-in ADU with:

• One bedroom, one bath

• Full kitchen and laundry

• 417 sq ft terrace and private entrance

• EV parking with its own gate and Control4 integration

• Garage with workbench, EV outlets, and built-in cabinetry

• Dedicated 325 sq ft storage room behind ADU for gear, tools, or wine delivery

Legacy Meets Location

Built in harmony with its landscape and decades ahead of its time, 2 & 2a Upper Alcatraz Place is more than a home—it is a model for future-forward luxury living. With elite finishes, intelligent systems, and unparalleled privacy and views, this residence represents a once-in-a-generation opportunity in the heart of Mill Valley.