The Suffolk Green Buildings Network are taking part in English Heritage’s Open Days 2011. A range of buildings are open to the public between 8th to 11th September and the brochure is attached: Heritage Open Day leaflet
You can visit a number of private homes including a 19th century cottage in Ipswich. Other venues include the HQ of Suffolk Wildlife Trust, the iconic waterfront building of University Campus Suffolk, West Suffolk House in Bury St. Edmunds and the Mill Green Brewery in Edwardstone. Some need to be booked in advance and full details are in the attached brochure and on their website.