DEEP is excited to be getting back to our new normal consistent with the direction of Governor Lamont and as a result of the rapidly improving COVID-19 situation in Connecticut. Starting no later than June 1, all customer facing services will resume normal business operations. For detailed information for what this means at DEEP and for the public we serve, visit our "New Normal" website: DEEP New Normal Information

Kellogg Environmental Center & Osborne Homestead Museum

500 Hawthorne Avenue
Derby, Connecticut
(203) 734-2513


Photo of front garden, arbor, and side and front of Osborne Homestead Museum 


Kellogg Environmental Center

Office Hours

Year Round 
Tuesday thru Saturday
9:00 a.m. - 4:30 p.m. 
Closed July 4


Osborne Homestead Museum

House Tours: June thru October
Thursday & Friday 10:00 a.m. - 3:00 p.m.
Saturday 10:00 a.m. - 4:00 p.m.
Sunday Noon - 4:00 p.m.
Closed July 4

(203) 734-2513 Phone 

(860) 622-2648 Fax
PO Box 435
500 Hawthorne Avenue
Derby, CT 06418

Our Mission

The Kellogg Environmental Center and the Osborne Homestead Museum, outreach facilities of the Department of Energy and Environmental Protection, provide professional development, leadership training and environmental programs that focus on our natural, cultural, and historical resources.  We encourage active participation in the resolution of issues to improve environmental quality for Connecticut citizens.

Susan Quincy , Environmental Educator

Susan Robinson, Museum Curator

Donna Kingston, Office Assistant

Marguerite Heneghan, Maintainer

Content last updated July 2021