You can search for all current planning applications on the Suffolk Coastal web site by following this link

You can find a copy of the East Suffolk Council - adopted Suffolk Coastal Local Plan Document (September 2020) by following this link 

The Suffolk Coastal Local Plan covers the former Suffolk Coastal District area. The plan is the starting point when making decisions on planning applications within that part of the District. For details of the adopted Suffolk Coastal Local Plan, the superseded Suffolk Coastal Local Plan, Monitoring Information, Online Consultatons, and Supplementary Planning Guidance, please follow this link 

You can find a copy of the Tuddenham St Martin Conservation Area Appraisal (adopted March 2016) by following this link