Architect Construction Services (ACS) is a rapidly growing Manhattan based mid-sized construction firm. Projects are approximately 70% commercial, 30% high-end residential primarily in Manhattan but also in the surrounding area.

ACS grew out of ICO and CSMP Exchange, an architecture/construction agency and online brokerage for construction projects, founded by Sebastian Donovan in 2010. ICO and CSMP paired clients and projects with pre-qualified contractors. As ICO and CSMP grew, they became more hands-on and more involved and in each project. ACS deepened its relationships with the best construction firms it had represented by partnering with them to provide fully integrated construction services. It now offers fully licensed and insured contracting services in the NYC area.


Sebastian Donovan, Partner, ACS. Holds a Masters Degree in Theoretical Physics from Cambridge University, UK. Previous experienced includes Mergers & Acquisitions investment banking at Lazard, London. Founder of TEP - a UK publishing business that produced the most widely read graduate recruitment directory at the top 10 UK Universities. Nuclear Fusion research at the UK Atomic Energy Authority.

Doron Kessel, Partner, ACS. Doron has 30 years of experience doing construction in NY, primarily in Manhattan. Previously a Lieutenant in the Navy. Doron holds a Bachelor's Degree from the New York Institute of Technology. Owner of GMK, a building management and development company that owns and operates buildings in NYC.

Dimitri Zafiris, Partner, ACS and Construction Manager. 24 years of construction project management in NY. Was promoted to project management roles after starting work in the industry in the trades. Lives in Long Island with his family.

Sharon Yogev, Construction Manager. 29 years of construction project management in NY. Lives in Harlem with his family.

Roi Freidler, Construction Manager. Roi holds a degree in Civil Engineering. 15 years of construction and site management experience.
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