From power plant to office: Ambler Boiler House conversion

Like many 19th-century industrial facilities, the Ambler Boiler House long ago outlived its initial use. Built in 1897 to generate power for an asbestos plant, the structure was abandoned when the owner folded after the Depression. In the early 2000s, Summit Realty Advisors bought the site, appreciating its proximity to a rail stop—Philadelphia is 40 minutes away by train—as well as good roads and utility services.

The 2008 crash delayed plans, but three years later, construction of an office complex began. Summit used creative financing, including state and county funds, to realize this speculative project in tough economic times.

Asbestos was remediated with the help of the Pennsylvania Department of Environmental Protection and state grants and loans. The endeavor required 760 man-hours of labor and the removal of 530 cubic yards of contaminated construction debris and waste. All that remained was a brick shell and steel roof trusses.

AMBLER BOILER HOUSE
Ambler, Pa.

Building Team

Submitting firm: Heckendorn Shiles Architects

Owner/developer: Summit Realty Advisors

Owner’s representative: The AT Group

Structural engineer: Elton & Thompson

MEP engineer: PHY Engineers

General contractor: Domus

General Information

Size: 48,000 sf

Construction cost: $16 million (core and shell)

Construction time: 2011 to August 2013

Delivery method: Design-bid-build

The former two-story plan entailed excessive floor-to-floor heights for offices, so the Building Team, led by Heckendorn Shiles Architects, inserted structural steel and concrete slabs to create three levels. Entryways and windows, many of which had been walled up, were reopened and infilled with high-efficiency store-front glazing. An iconic 140-foot smokestack was retained, and the original monitor roof profile, now equipped with translucent composite clerestories, enhances daylighting. Loft-style office spaces are characterized by references to the past, including exposed brick and reclaimed wood. However, the infrastructure is thoroughly modern. In particular, a 54-well geothermal system makes the building economical to operate, contributing to a LEED Platinum designation.

Since it opened in August 2012, the development has attracted a mix of tenants, including Summit Realty, Clutch (a mobile app designer), and AEC firm Core States Group. DiD, a boutique healthcare marketing agency, recently completed a two-story fit-out, with an open communicating stair and a “village green” common space. Ambler Boiler House—first an economic engine, then an eyesore—is most emphatically back in business.

Two of Perkins Eastman’s firm leaders—Mary-Jean Eastman, FAIA, Vice Chair and Managing Principal of its New York City studio, and Barbara Mullenex, AIA, Managing Principal of the Washington, D.C., studio—will share anecdotes about their personal journeys to the top of a global architecture, design, and planning firm, at Building Design+Construction's fourth annual Women in Design+Construction Conference. The event will take place November 11-13, 2019, at the Fairmont Scottsdale Princess resort in Scottsdale, Ariz.

Row New York Boathouse, courtesy Foster + Partners

Sports and Recreational Facilities | Jun 27, 2019

Foster + Partners unveils design of wooden boathouse for Row New York

The project will sit on the banks of the Harlem River in Sherman Creek Park.

A new McKinsey report says factory-built modular construction could be next big shift in the industry.

Building Tech | Jun 26, 2019

Modular construction can deliver projects 50% faster

Modular construction can deliver projects 20% to 50% faster than traditional methods and drastically reshape how buildings are delivered, according to a new report from McKinsey & Co.