The campaign comes as developers submit applications for the Chard Eastern Development Area (CEDA).
Residents 4 A Better Chard (R4ABC) have published a professional assessment of the 252 homes plans put forward by Persimmon Homes between Forton and Tatworth roads.
The report states the application will not satisfactorily deliver a section of the Chard Relief Road, the new schools or GP surgeries or the Holbear neighbourhood centre. The report explains this was all promised in the SSDC Local Plan and the Chard Regeneration Plan.
The group says they are not opposed to the development between Forton and Tatworth roads, but they are opposing the "non-compliance" with SSDC's Local Plan.