Plan with confidence
Replacing windows in Scottish listed buildings and conservation areas
Understand why a proposed window alteration may need early discussion with the local planning authority.
Requirements depend on the designation, building and proposed work. Check with the local authority before altering or replacing windows; do not rely on a generic claim that a particular style is automatically approved.
Check the designation and proposal
Find out whether the property is listed, lies within a conservation area or is subject to another planning control. The building’s location and the extent of the proposed work matter.
Replacing historic windows can alter the character and fabric of a building. Ask the planning authority whether listed building consent or other approval is needed before ordering.
Record the existing details
Photograph the window safely and note material, opening method, glazing pattern, bars, mouldings and condition. Historic Environment Scotland’s advice prioritises repair and discusses measures such as draught proofing and secondary glazing.
A like-for-like description alone may not answer whether a proposal is acceptable. Seek guidance for the specific building and consult a conservation professional where appropriate.
Prepare the right information
Ask the supplier for measured drawings, material details, opening sections and photographs of the proposed product. Submit the information through the relevant planning process if advised.
This guide is general information, not planning or legal advice. The authority decides the applicable requirements. Do not start work that requires permission before it is granted.
Explore your next step
- Sash and case replacement windows
- Historic Environment Scotland: traditional sash windows
- Scottish building standards guidance
General planning information updated 29 September 2026. Product specifications and the work for your home are confirmed in your quotation.