Planning Permission

Planning Permission

Planning Permission

If you are replacing existing windows or doors a domestic house, planning permission is not usually required. You are allowed to change styles and colours. Exceptions include listed buildings and houses located in conservation areas. Special consent is required for these.

If in doubt, contact Aluminium Windows Ltd for free advice. Information about planning and building regulations can be found at:

There are other sorts of restrictions such as the usual insistence that windows in flats need to be approved by the management committee and normally must not alter in design. Replacement installations must comply with building regulations (see above link). This requirement is satisfied by AWL issuing a CERTAS certificate.

If you are having windows or doors installed in a new building or new extension, planning permission will be included in the original planning approval. In this case there is no need for AWL to issue a CERTASS certificate.


Conservatory PlanningIn the case of conservatories it is best to contact AWL for advice about planning permission. The following notes provide useful guidelines;

A conservatory is a building that has not less than three quarters of its roof area made of translucent materials and not less than 50% of its wall area made of glass. A conservatory is usually exempt from planning permission.

However, when there is no door (separation) between the house (host building) and the conservatory, or there is a radiator plumbed into the conservatory, Building Regulations will apply.

Conservatories which have more than 50% of the walls and roof constructed of glass or polycarbonate will not, in the majority of cases, meet the thermal (U-value) requirements of Building Regulations.

It is therefore recommended that a division between the host building and the conservatory, which constitutes a separation, in the form of a door is installed. A walk-through such as an archway from the host building to the conservatory is against Building Regulations.

Do I Need Planning Permission?

If the answer to any of these questions is yes then you may be required to seek planning permission;

1. Will any part of the proposed conservatory be visible from a road or other public right of way (normally within 20M including footpaths)?

2. Have there been any previous extensions/additions to the original property?

3. Is the property a listed building?

4. Is the property in a conservation area or an area of outstanding natural beauty?

5. Are there any known restrictions or covenants regarding development on the property, such as a leasehold, housing association or joint ownership?