This extraordinary home is a work of art in itself - from the stunning museum quality architectural details inside to the North views of San Francisco City and Bay including Angel Island, Alcatraz and Fort Mason along with the calm and sunny Southern exposure outdoor spaces - it is truly a state-of-the-art masterpiece that offers a quiet and serene setting from every room and the perfect back-drop for art aficionados.

Designed with a purity of expression utilizing energy efficient modern building materials including aluminum exterior panels and ultra clear insulated windows and sliding doors achieving stunning clarity and light. The modernized floor plan was brilliantly designed utilizing a steel super structure offering clean open spaces with dramatic lines, volume, light as well as superior structural performance. Rooftop solar and energy efficient design decisions significantly reduce the homes energy use. Rarely has a home of architectural integrity been built or come available in one of San Francisco's best neighborhoods within walking distance to everything.


District : 7 - Cow Hollow 

Approximate Square Footage: 6,000 

Contemporary Construction & Advanced Energy Efficient Design  

Bedrooms: 4 Spacious Bedrooms with Solar and Blackout Shades by Lutron HomeWorks    

Baths: 3.50 including Master with Steam Shower, Soaking Tub and His/Her Vanities  

Large Multipurpose Media Room with Theater with Digital Projector, Screen with Music or Exercise Area 

Advanced Audio System throughout home by Marantz

Elevator to all floors

San Francisco Bay Views from 4th Floor of Northern Bay from Angel Island-to-Fort Mason with Expansive Glass and Ceiling heights. 

Sunny South Exposure Quiet Exterior Terrace off 4th Floor Living, Dining & Extraordinary Bulthaup Kitchen 

Bulthaup shelving, fireplaces and workstations throughout the home

Parking Spaces:  Generous 3 Car Garage plus Ample Storage

Roof:  Skylights & Solar Panels



Designed by award winning architect Stanley Saitowitz/Natoma Architects, Inc



Matarozzi Pelsinger Builders constructs some of the most beautiful and architecturally complex residences and light commercial spaces in the Bay Area. Founded by Dan Matarozzi and Dan Pelsinger in 1986, Matarozzi Pelsinger Builders has evolved from a small construction company into a larger, more disciplined organization. We now specialize in all aspects of custom building from historical renovations, remodels, and retrofitting to unique ground-up projects. Throughout our evolution we have maintained a standard of teamwork, warranty service and proactive project management unmatched in the building industry. The results are decades of great relationships with clients and architects, and hundreds of quality projects completed on time and on budget.



M Photography Studio specializes in Architecture, Interior Design, and Landscape Photography.  With a refined sense for capturing the design aesthetic and details of creative spaces through the eye of a classically trained architect and contemporary designer paired with the expertise of an international photographer, M-Photography Studio offers a unique, artistic and global vision to their clients. We believe architecture and design are works of art, and each project deserves the highest respect with timeless imagery.  

M-Photography Studio Contact: 415.377.2406 |



415.713.3559  |




Aluminum Exterior, Windows and Doors - Aluminum is a fantastic building product for those concerned about sustainability. It is naturally plentiful and perpetually surviving (recyclability). Moreover, aluminum rates very high in Life Cycle Assessment and leaves a small ecological footprint. Fleetwood Windows & Doors currently leads the fenestration market with the Greenest multi-slide and sliding pocket doors in the United States. Fleetwood's windows & doors are designed to be the epitome of luxury as well as extremely energy efficient.

STARPHIRE® Ultra-Clear Glass: Building designs that incorporates Starphire glass by PPG achieve two goals – stunning clarity and amazing durability. Starphire contains as little as 10% of the iron content of regular glass – allowing it to transmit 91% of light, compared to 83% for regular glass – without the greening effect typically associated with thick glass panels.  Beauty, clarity and functionality are the cornerstones of the home's design vision - Starphire Ultra-Clear glass edge brings more light into interior space while offering unmatched levels of brightness, color fidelity, clarity.



Lighting & Shades by HomeWorks - Lutron: Over 300 Energy efficient low voltage halogen reflector lamps with dichroic mirror. Up to 30% energy savings compared to conventional lamps Instant re-start full light output immediately. Remarkable color rendering,close to natural light (100%CRI) 0% mercury and lead Environmentally friendly technology.  HomeWorks has been the leader in light control for luxury homeowners for over a decade. HomeWorks system provides convenient, intelligent and sophisticated control of the home's lighting and shades. Centralized dimming panels is used to provide control of multiple zones of light and shading solutions to reduce lighting energy use, optimize system performance, and enhance the visual environment. Lutron shading solar screens and black out shades provide precision control of daylight – all at the touch of a button. Lutron shading fabrics are made from sustainable materials for complete environmental and energy savings.

Designed by Truax Design Group creates innovative lighting environments that elevate interior and exterior spaces to a whole new level of art and functionality.



2555 Union has an extraordinary collection of stainless steel Bulthaup kitchen, shelving, fireplaces and workstations throughout the home.  Bulthaup is the essence of  timeless elegance, true craftsmanship -  inspired by the bauhaus movement, the bulthaup brand exudes confidence and success and reflects timeless, effortless style. The bauhaus tradition brought together art and technology, form and function, and the rediscovery of true craftmanship. It became the biggest design influence of the modern movement and led bulthaup to develop concepts based on bauhaus principles of looks, function and value. True to its bauhaus ethos, bulthaup’s brilliantly engineered functionality makes it the choice for the hardest of working kitchens and sets bulthaup kitchens apart in the style-is-king, high-end market.



Programmable Audio in every room by Marantz.  Most people enjoy music - but some people are passionate about it. - Music should be reproduced - in our opinion - exactly the way the artist intended, because nothing - absolutely nothing - should get in the way of the music. That's why we at Marantz have only one philosophy: "Because Music Matters."



Roof of 2555 Union is fully outfitted with 8 rows of solar panels served by Sunny Boy 6000-US inverter, UL certified rated at 97% peak efficiency. Solar Panels minimize load to Pacific Gas & Electric power grid but does not eliminate the demands of the energy efficient building systems, specifically the extensive museum quality lighting system.



Radiant Heat is more comfortable, more energy efficient, provides a healthier environment and is more aesthetically pleasing than forced air.  A typical radiant heated home in the United States can expect a 25%* energy savings over a conventional forced air home. There are no floor registers, no baseboard radiators, and no wall or ceiling chases. 

The Munchkin Boiler is one of the most compact and efficient residential boiler available on the market today. Fully modulating for ultra high efficiency 95.1%, Each Munchkin Boiler will modulate its firing rate to match the energy needs of the living space. Proven European technology, manufactured in the United States.

Voyager Model SSV199-119rb Super High Efficiency Stainless Steel, Indirect Water Heaters. Ultra high performance, can generate over 50% more hot water than many water heaters of similar size. Number one selling indirect water heater in the country.



Luxury and Style in Cow Hollow  - San Francisco Chronicle Real Estate by Jordan Guinn

Architect Stanley Saitowitz of Natoma Architects, Inc. married efficiency and artistry when he redesigned 2555 Union St. in Cow Hollow. The owners had an extensive art collection, he said, and he wanted an environment that both complemented their pieces and made a statement of its own.

"In a way, the house was a frame for their contemporary art collection because of the simplicity and minimalism of its design," Saitowitz said. "It has modern characteristics and traditional elements, and it's a style that's unique to San Francisco's architectural vocabulary."

Redesigned in 2008, Saitowitz kept the original footprint but reimagined the residence, which was originally constructed as a spec home in the 1970s. Public rooms crown the top level of the four-story home, and the third-floor master suite opens to the terraced gardens. Environmentally friendly design aspects include the floor-to-ceiling windows and skylights that welcome natural light into the home, solar panels and recyclable aluminum doors, windows and siding.

The design's dramatic lines and inspiring views are self-evident, but Saitowitz said it's the top floor that remains his favorite. The entertainment floor looks out at San Francisco Bay and includes a southern patio off the great room. Privacy screens of frosted glass enable the spaces to be integrated or sealed off from one another, a touch Saitowitz is especially fond of.

"You can shut down the family room and kitchen and separate it from formal dining room and living room, or you can have them flow into one another," he said. Spanning the length of the kitchen and family room is a horizontal ribbon window, an understated yet striking addition to the space.

"It's my favorite element of the home," Saitowitz said of the ribbon window that runs between stainless steel cabinets and the counter of the Bulthaup kitchen. A massive center island with built-in cooktop sits beneath a trio of skylights in the kitchen. The adjoining family room includes a gas fireplace and direct access to the patio, while the opposite end of the kitchen includes a built-in workstation.

Besides the skylights and floor-to-ceiling windows, Saitowitz used the staircase and landing areas infuse natural light into the contemporary home.

"In vertical city houses, you get to use the stairs as light wells. They are these open areas that go from ground to sky," Saitowitz said. "Plus, the glass stair rails catch and amplify the light as well."