Windows and doors: repair is not the same as redesign
Start by specifying whether you are repairing the existing item, replacing it closely in the same form, or changing the opening, material or appearance. Council guidance distinguishes maintenance from a replacement that alters the building. Qualifying replacements in a house may be permitted development, whereas flats cannot rely on the householder rights. [1]
An Article 4 direction can change the answer. It may control specified windows or doors even where a comparable replacement would otherwise be permitted. Check the address schedule and the elevation covered before ordering; a direction affecting the front does not necessarily have identical wording for the rear. [2]
Where permission is needed, details matter. Richmond's conservation guidance discusses matters such as opening patterns, frame proportions and retaining historic windows. “White window” is not a complete specification: show the sections, glazing bars, opening method and how the frame sits in the wall. [4]
Roof coverings, rooflights and cladding
Repairing a roof and enlarging it are different planning operations. Rooflights may qualify under the applicable roof-alteration rules, while dormers in conservation areas require planning permission. Changes to the covering can also be subject to an Article 4 direction. [1] [2]
The national householder rules specifically restrict exterior cladding in conservation areas, including materials such as render, timber and tiles. Do not assume a new rendered finish or an external-insulation scheme is simply decoration because the wall's position stays the same. [5]
Record the existing covering and proposed finish in photographs and a short material schedule. Ask the designer to identify each physical change instead of treating a whole roof or façade package as a single like-for-like replacement.
Front gardens, parking and boundary walls
For an eligible house, a new or replacement front driveway can fall within permitted development where it is permeable, or where water drains to a suitable lawn or border within the property. More than 5 square metres of traditional impermeable paving without that drainage arrangement needs planning permission. Relevant Article 4 directions or planning conditions can still remove the allowance. [3]
Paving is only one part of the project. Removing or changing a wall, gate or fence is a separate operation; some conservation-area directions specifically control these features. A new vehicle crossing also requires the council's dropped-kerb process. Check the whole proposal, not merely the paving material. [2] [3]
A listed building needs a separate decision
Listed building consent depends on the effect on special architectural or historic character, including internal fabric. A planning permitted development allowance does not settle that question. Historic windows may be significant even when a replacement is advertised as matching. [6] [7]
Repair, draught-proofing or carefully designed secondary glazing may offer alternatives to replacement, but the appropriate solution depends on the building and the effect of the work. Set out the alternatives and obtain the necessary heritage decision before committing to a product. [8]