40 Years of Acheson Doyle Partners Architects


A Legacy of Leadership. A Future of Possibility.

A message from the principals

As Acheson Doyle Partners Architects celebrates its 40th anniversary, we are proud to announce that Drew Hartley, AIA, has been named Managing Partner.

Since the firm's founding in 1986 by David C. Acheson, AIA, Michael F. Doyle, FAIA, and Thomas Thornton, AIA, leadership has evolved alongside the practice. Over the past four decades, partners including Tom Thornton, Lou Martino, and Matt Barhydt helped shape the firm's culture, reputation, and commitment to architectural excellence before their retirements. Each generation of leadership has built upon the one before it, strengthening the firm while remaining true to its core values.

Drew joined Acheson Doyle Partners in 2009 and became a Partner in 2019. Over the past 17 years, he has established himself as a leader in historic preservation, adaptive reuse, hospitality, and residential architecture. His thoughtful approach to balancing preservation with contemporary design has guided many of the firm's most significant commissions.

This year alone, under Drew's leadership, the firm secured Landmarks Preservation Commission approvals for three transformative adaptive reuse projects: St. Felix, Duffield Street, and One Hanson Place. He is also leading long-term capital planning initiatives for several distinguished private clubs, helping clients preserve and position their historic buildings for future generations.

Drew's appointment as Managing Partner represents the next chapter in the firm's continued growth. Founding Partners David C. Acheson and Michael F. Doyle will remain actively involved in the practice, continuing to provide invaluable guidance, mentorship, and expertise to both the firm's clients and staff. Together with Associate Partners Brendon Snyder and Andy Liu, the leadership team reflects both continuity and the next generation of the firm's vision.

As we reflect on forty years of practice, we celebrate not only the buildings we have restored and the clients we have served, but also the enduring values that have guided our work: craftsmanship, precision, collaboration, and stewardship. Looking ahead, Acheson Doyle Partners remains committed to preserving the past while designing for the future. We are energized by the opportunities ahead and look forward to continuing to grow alongside our clients, our communities, and our talented team.

The History of ADP: A Look at Our Work Through the Decades

Interactive Project Map

Firm Timeline

1980s

Rooted in Craft and Precision

In 1986, after meeting at Harvard, David C. Acheson, AIA, and Michael F. Doyle, FAIA founded Acheson Doyle Partners Architects in New York, NY.

The firm’s earliest work established the principles that continue to define ADP today: meticulous detailing, collaborative design, and enduring client relationships.

1990s

Tradition Meets Transformation

Projects during this decade reflected an increasing ability to work across styles, building typologies, and scales, always with the same commitment to craftsmanship and thoughtful stewardship.

Breathing New Life into Landmarks

2000s

The 2000s marked a period of increasingly complex restoration work. From St. Bartholomew’s iconic dome to St. Patrick’s Cathedral and New York’s premier hospitality destinations, ADP strengthened its reputation as a trusted steward of historic architecture.

Shaping the City’s Cultural Fabric

2010s

During the 2010s, ADP’s work became increasingly visible across New York City’s cultural and institutional landscape. The firm contributed to landmark destinations, hospitality spaces, healthcare environments, universities, and public-facing cultural projects while balancing preservation expertise with contemporary architectural interventions.

Continued Stewardship and Legacy

2020s

Today, ADP continues to evolve while remaining grounded in the values that shaped the firm over the past 40 years.

Future of ADP

Adaptive reuse, luxury residential design, hospitality, and institutional work reflect a practice focused on transformation, longevity, and thoughtful modernization. Long-standing client relationships remain central to the firm’s identity.