Construction Highlight: 328 Cumberland

June 05, 2025
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4 min read
328 Cumberland

Transforming a 1,500 square-foot home built in 1928 into a 4,300 contemporary residence comes with its fair share of challenges, especially when one of those challenges is a global pandemic.

328 Cumberland
The proposed floor plans for 328 Cumberland.

FORMA began construction on an exciting new project back in 2018 and things were running as smoothly as they could be until March of 2020 when COVID-19 hit. Construction on a house of this size takes a large team of people working closely together. With the shut down and various restrictions, it was impossible to have the necessary team while keeping everyone safe and healthy. Due to this, the home was built over the course of five years. 

The result? 328 Cumberland: A modern estate placed atop the apex of the most sought-after block in Dolores Heights with views from the Sutro Tower to the Financial District.

Expanding the home

328 Cumberland
The FORMA team at the early stages of underpinning—a construction technique used to strengthen the foundation of an existing structure. This is a critical process in order to maintain the structural integrity of a building.

Aside from the looming challenge of the pandemic, our team took on the challenge of being both the developer and contractor for this home renovation and remodel. The first steps to prepare this home for modern-day living was to expand. The zero-lot line home presented us with the seemingly impossible task of constructing the necessary underpinning of neighboring structures to create an entirely new level to enjoy. The subterranean level would give the homeowner more space and more storage, something that can be hard to come by in the city.

Early stages of excavation.

Upon expanding, our team began infrastructural upgrades that were imperative to the integrity of the home. 650 cubic yards of soil were excavated (equivalent to approximately 80 transport trucks), 21 piles were drilled at depths of 40 to 50 feet, 26 piers were added that descended 25 feet below the earth and 300 yards of concrete (equal to 33 concrete trucks) were poured to ensure a solid structure. To further fortify the property’s perimeter, 1,880 linear feet of steel soldier beams were embedded into the foundation. 

The expansion alone took 11 months to complete.

The rear facade of 328 Cumberland at different stages in construction. From left to right: Framing, window installation, finished.

The End Result

Main living space on the third floor complete with floor-to-ceiling windows and tall ceilings.

After five years of hard work and dedication, 328 Cumberland opened its doors and was put on the market. Views were met with floor-to-ceiling windows, high-end kitchen appliances, marble showers, countertops and a fireplace, custom millwork, cutting-edge AV solutions, sophisticated lighting controls, statement staircase, custom hand-painted outlets to seamlessly blend into the marble backsplashes and the highlight: a rooftop terrace with glass railings that allow for unobscured views of the city below.

The main kitchen features light grey marble with dark grey veining, warm chestnut cabinets, high-end appliances and pendant lighting above the island.
A close-up view at the hand-painted outlets to mimic the marble and the beautiful stair railing details that create a subtle edge to the interior.
The roof deck boasts panoramic, uninterrupted views of the city and beyond thanks to the glass railings.

328 Cumberland was made for entertaining. With multiple spaces to gather, a custom wet bar, state-of-the-art kitchen with multiple sinks and endless storage, it’s the perfect home to share with friends and family.

One of our favorite entertainment spaces, the roof deck at 328 Cumberland leads into a hosting area with plenty of seating and a wet bar. Leave the sliding glass doors open and enjoy indoor-outdoor living all year round.
An aerial view of the home, showcasing the tiered backyard and stunning roof deck.

A larger home called for a larger than life backyard. What began as desolate and dry dirt was meticulously manicured into a lush outdoor escape. Multiple levels of grass and greenery are complemented by a wooden fence in a warm hue that provides both style and privacy.

Before and after comparison of the backyard. What was once an overgrown and forgotten backyard has been turned into a meticulously manicured outdoor escape.

Year after year, challenge after challenge, our team stayed the course and delivered a beautifully modern and contemporary home that will last for years to come.

Front facade of the home.