Can I replace sash windows in a conservation area?

Often only with matching traditional detailing and, for listed buildings, with consent. Check with the council before ordering anything.

How long does a cord repair take?

Usually half a day per window, less if several in the same room are done together.

Small works

Sash window easing and cord repairs

Repair is usually cheaper, and in a conservation area often the only option

The short answer

Broken cords, painted-shut sashes, rattles and draughts are all repairable. A cord renewal is typically a half-day per window for a joiner; draughtproofing with brush seals is similar. In Edinburgh's conservation areas and listed buildings, sympathetic repair is usually required rather than replacement.

What the work involves

Removing the beads and sashes, renewing cords and re-balancing the weights, easing the runs, fitting brush draught seals, adjusting or replacing the fasteners, and re-fitting the beads.

Rules and responsibilities in Scotland

Listed building consent is generally needed to alter or replace windows in a listed building, and conservation-area rules restrict changes to windows visible from the street. Repair rarely needs consent; replacement often does.

What commonly goes wrong

Sealing sashes permanently shut, which removes ventilation and causes condensation, and replacing repairable timber sashes without checking the consent position.

What it usually costs

Indicative ranges only, to help you judge a quote. They are not an estimate for your property — only the business doing the work can give you that.

Cord renewal and easing is priced per window; a whole flat done together is cheaper per unit.
Draughtproofing pays back in comfort more than it saves in fuel.
Full timber replacement is many times the cost of repair and may need consent.

What to do, in order

1List every window and what is wrong with each.
2Check whether the building is listed or in a conservation area.
3Get a specialist sash joiner to look at the whole flat at once.
4Prioritise safety — a broken cord on a heavy upper sash is a hazard.
5Keep the invoices for the property record and any future sale.

Local detail for the Lothians

Most of central Edinburgh is within a conservation area, and much of the New Town is listed.
Original Georgian and Victorian glass is worth preserving and cannot be matched cheaply.
Salt-laden air in coastal East Lothian is hard on external paint, so cycles are shorter.

Read the Edinburgh page for sash window easing and cord repairs

When you need a professional

Use a joiner experienced in traditional sash and case work, and check the consent position with the council before replacing anything.

Common questions

Can I replace sash windows in a conservation area?: Often only with matching traditional detailing and, for listed buildings, with consent. Check with the council before ordering anything.
How long does a cord repair take?: Usually half a day per window, less if several in the same room are done together.

Lothian Property is a property information and professional-introduction service operated by Maybury Scotland Limited. Lothian Property is not an estate agency. Where requested, we may connect homeowners with independent estate agents and other property professionals. How we work.

Doors that stick or will not close
Easing, planing and re-hanging internal doors that have dropped or swollen.
Silicone and sealant renewal
Replacing failed bath, shower and worktop seals before the water gets into the structure.
Wall patching and making good
Filling cracks, holes and old fixing points so a room is ready to paint.

Last reviewed 5 September 2026.