When Did Permitted Development Start?

All Permitted Development requirements apply to the dwelling as it was originally built, or as it stood on 1st July 1948 and as such, there is a limit to how many changes you can make to your home under PD.

When did permitted development rights come in?

When office to residential permitted development rights were introduced in 2013, the Mayor was successful in securing an exemption for key business districts in and around central London. This was in recognition of their significance as nationally important office locations.

When did planning permission start in UK for extensions?

Planning title was granted for all pre-existing uses and buildings by the Town and Country Planning Act 1947, which came into effect on 1 July 1948. Since that date any new "development" has required planning permission.