Previous and/or current* sponsors include:
- AARP*
- American Planning Association - RI Chapter
- Aquidneck Island Planning Commission*
- Audubon Society of Rhode Island*
- Bank of America
- Bank Newport*
- BankRI*
- B + H Shipping
- Brown University*
- City of Pawtucket
- City of Providence
- DiPrete Engineering
- Durkee Brown Viveiros and Werenfels*
- Federal Home Loan Bank of Boston*
- GZA Environmental*
- Horsley Witten Group
- Johnson & Wales University
- Lifespan
- Moran Shipping*
- Narragansett Bay Research Reserve
- National Grid
- Providence Foundation*
- Roger Williams University*
- Rhode Island Builders Association
- Rhode Island Foundation
- Rhode Island Economic Development Corporation*
- Rhode Island Department of Environmental Management
- RI Department of Health
- Rhode Island Housing
- RI Division of Planning
- RI Association of REALTORS*
- RI Green Building Council*
- Roger Williams University*
- The Brickle Group*
- Union Studio Architecture & Community Design*
- United Natural Foods
- URI Feinstein Providence Campus*
- Washington Trust Company*