Haiko Cornelissen has extensive experience developing spiritual and community-focused real estate. As a Director of Real Estate at the Episcopal Diocese of Long Island, Mr. Cornelissen headed the Asset Management and Construction Management divisions. At the Diocese, he oversaw dozens of renovations and 20+ church development projects. The developments included affordable and senior housing as well as schools, offices, new churches, and parish halls. Mr. Cornelissen was also the Chief Operating Officer of Episcopal Real Estate Long Island, a corporation created for Episcopalian real estate developments.

He worships at St Mark’s Church in Jackson Heights where he served on the Vestry for many years. Mr. Cornelissen has a long family tradition of building for communities. His great-grandfather, Henricus Teeuwisse was the Chief Architect of the Dutch Kingdom, and responsible for designing civic buildings of national importance. His father, Hans Cornelissen, designed community housing and provided architectural services to his local church.

Beside Stewardship Realty, Mr. Cornelissen is also the founding principal at Intellignt   Architecture, a firm that focuses on designing community-centered architecture. Mr. Cornelissen also served as vestry member of his local church and is a member of his Community Board in Queens.

Mr. Cornelissen is also an architect licensed in both the United States and Europe and studied at MIT and Harvard before graduating in 2004 from the Technical University of Delft. Mr. Cornelissen also worked for world-renowned offices OMA (Rem Koolhaas) and   Steven Holl Architects. He has taught at the Parsons School of Design and   Columbia University Graduate School of Architecture GSAPP, has lectured at   various universities including Harvard Graduate School of Design and the   Brooklyn Experimental Media Center, and is a visiting critic at TU Delft, Cooper Union and the Pratt Institute.