Restoration of the Old Croton Aqueduct Keeper’s House, Dobbs Ferry, NY

• New York State Office of Parks, Recreation and Historic Preservation 2016 Preservation Award

• Greater Hudson Heritage Network 2016 Award for Excellence

Built in 1857, the Dobbs Ferry Keeper’s House was one of six that were situated along the Old Croton Aqueduct which supplied clean water to a growing New York City. It is the only house that survives in its original location. In collaboration with NYS Parks and the Friends of the Old Croton Aqueduct, STA returned the structure to a useful life while retaining original historic fabric wherever possible. The completed project serves as an educational center offering information about the Aqueduct’s heritage, as well as a visitors’ center providing amenities to the thousands of people who walk, jog or bike along the Old Croton Aqueduct trail.

Historic Preservation and Restoration of Maverick Concert Hall, Woodstock, NY

• Preservation League of New York State 2016 Award for Excellence in Historic Preservation

STA worked with the Board of Maverick Concerts to restore their National Register-listed rustic hall and woodland grounds in time for their 100th birthday. Maverick is the oldest continuous summer chamber-music series in America. Despite significant interventions, the Board and design team added amenities but still preserved the essential aesthetic and acoustical experience of this unique music chapel.

Warburton Lofts in the Philipse Manor Historic District, Yonkers, NY

• Preservation League of New York State 2014 Award for Excellence in Historic Preservation

• Greater Hudson Heritage Network 2014 Award for Excellence

Restoration and adaptation of five contiguous 19th and early 20th century buildings to 10 work-live energy efficient apartments and 6 storefronts.

Tiffany Reading Room, Village Hall, Irvington, NY

• Greater Hudson Heritage Network 2014 Award for Excellence

This restoration of Louis Comfort Tiffany’s 1902 reading room brings his luminous ensemble of tile, wood-graining, turtleback lamps and original furniture back in service for tranquil reading and intimate community gatherings.

Sharp Sustainability Center, Ramapo College, Mahwah, NJ

• AIA Westchester-Mid-Hudson Chapter 2010 Honor Award for Recognition of Architectural Excellence

This 21st century "net-zero" one-room schoolhouse is a teaching instrument, a demonstration of green techniques, and a symbol of the college's commitment to a sustainable future.


Publication:  Westchester Home Magazine
Date:   Spring 2012
Title:   "Great Architects: The County's 13 Top Master Builders "
Subject:   Among the 13 AIA award winning architects changing the way the county looks -- and lives: Stephen Tilly

Publication:  Preservation Magazine
Date:   March/April, 2009
Title:   "Going Green at Home"
Subject:   Stephen Tilly & Elizabeth Martin's eco-friendly restoration of their own house


Publication:  The New York Times, Westchester Section
Date:   April 20, 2008
Title:   "The House that Green Built"
Subject:   Eco-Friendly Construction - Pegg-Baker House, Dobbs Ferry, NY

Publication:  The New York Times, Westchester Section
Date:   August 10, 2008
Title:   "Single-Family, Meet Mixed-Use"
Subject:   Eco-Friendly Condos & Rentals - Riverton Lofts & Warburton Avenue Affordable Housing, Hastings-on-Hudson, NY

Selected Portfolio