Loft conversions and dormers in Crawley

All of Crawley

307 applications since 2020. 200 approved and 50 refused. Refused: about 1 in 5 here, about 1 in 6 across the councils we cover.

Last updated 8 November 2026.

Without planning permission

  • Up to 40 cubic metres of extra roof space on a terrace, 50 on a semi or detached house
  • Not on the roof slope facing a road, and no higher than the existing roof
  • Materials similar in appearance, set back about 0.2 m from the eaves, and side windows obscure-glazed

England, houses only. Flats, listed buildings, conservation areas and Article 4 directions change this. The full rules.

Year by year

YearApplicationsApprovedRefused
202634195
202533209
202434229
202338246
202262417
202157405
202049349

Neighbouring councils

CouncilApprovedRefusedHow often
Horsham 939 79 about 1 in 13
Mid Sussex 1,096 101 about 1 in 12
Mole Valley 4,508 865 about 1 in 6
Reigate 1,551 261 about 1 in 7

Other projects in Crawley