Erection of single storey rear extension which would extend beyond the rear wall of the original house by 8.00 metres for which the maximum height would be 3.00 metres, and for which the height of the eaves would be 2.90 metres. (Larger home extension) (General Permitted Development) (England) Order 2015 (as amended) - Schedule 2, Part 1, Class A) Data via plota.co.uk
Tandridge is slower than most councils at deciding householder applications, ranking #234 out of 296. The council extends the time limit on 56% of applications - one of the highest rates in England. Expect your application to take longer than the standard deadline. Householder applications are slightly more likely to be approved here (90%) than the national average (90%).