Isle House Tops Out 23rd Level of Residential High-Rise on Treasure Island

Webcor Concrete recently celebrated topping out the 23rd level of Isle House, Treasure Island's new waterfront residential high-rise.

August 17, 2023

Project Updates

Dozens of Webcorians, trade partners, and representatives from partner companies flocked to San Francisco’s Treasure Island last month to celebrate Webcor Concrete topping out the 23rd level of Isle House, a waterfront residential high-rise offering stunning views of the city skyline.

Attendees included representatives from Wilson Meany (client/owner), David BakerArchitects (architect), Stockbridge and Ulilico (Wilson Meany’s partners), DCI Engineers (structural engineer), Treasure Island Development Agency, andTreasure Island Development Group. Everyone enjoyed freshly made sides and grilled brisket from Interstate Concrete Pumping’s BBQ crew and Webcor ConcreteSr. Construction Manager Dennis Heimer while listening to several team leaders share thoughtful speeches about the project’s progress and impact:


·     Linsey Perlov and Alex Monaghan, Wilson Meany project managers, gave a brief overview of Treasure Island’s history and thanked the team for the immense amount of work that’s been invested in Isle House's progress within such a brief timeframe. They also stressed how fortunate we are to work in an industry that allows us to point directly to the final product of our work in our own neighborhoods, noting that we’re“contributing to the legacy of San Francisco.”

·     Pedram Farashbandi, principal at David Baker Architects, spoke about the unique shapes and designs that will be seen throughout the residential building.

·     In addition to discussing Treasure Island’s development history/progress and Webcor’s years-long involvement, Vice President John Wilson congratulated the team on building Treasure Island’s first-ever high-rise and emphasized his appreciation for our trade partners—“the ones getting everything done and delivering the hard physical work day after day.”

·     Webcor Concrete Superintendent Kelly Martz thanked the crews, unions, and operators for the tireless work they put into the project and congratulated them on successfully executing a 5-day cycle.

The Webcor BBQ and thank-you raffle for our trade partners was a gratifying celebration following a long year brimming with exceptionally difficult, unprecedented challenges. From weather-related issues fueled by California’s unusually long and intense winter to the logistics-related issues that came with working around four surrounding projects and consistently changing street closures, the project team has faced an onslaught of hurdles over the last year that were not for the weary, Kelly shares.


“Despite these challenges, we finished the year with a great safety record and delivered a quality product on time and on budget,” he says.

About Isle House

Isle House is a residential development on Parcel C2.4, situated in the San Francisco Bay on the western shores of Treasure Island. The project consists ofa 22-story (approximately 220-foot-tall) residential building of Type 1-A construction without basement, a 7-story portion facing the West (including a living accessible roof), and a 4-story portion facing the East. The complex will include up to 250 studio, one-bedroom, and two-bedroom residential units available to rent, as well as parking accommodating up to 127 vehicles via car stackers. The ground floor and second floor include a 1,200-SF cafe space, entry lobby, residents’ amenities, live/work units, bike room, building services such as trash room, mechanical rooms and electrical rooms, leasing offices, and fitness amenities. Levels 3-22 will include residential units, a3,400-SF courtyard over the parking garage, as well as fitness amenity spaces on Level 7 and a resident lounge that opens to a common roof deck. The 22-story residential tower and podium wings was constructed of cast-in-place concrete framing with flat-plate post-tensioned concrete slabs and columns performed by Webcor Concrete.