Looking for further developments around your area, check out Hillingdon’s Planning website here. If you put in your postcode, it will show all applications, should you raise any concerns.
If you would like to alter your property, you may have to seek permission from the landowner, see the covenants in your conveyance. This can be done through the management company via their portal.
Following obtaining permission, you can apply to Hillingdon Council, Planning Department for planning permission.