Property-type budget · 2026
Terraced House Window Replacement Cost
Terraced houses often have fewer external elevations than semis or detached homes, but front bays, rear extensions and traditional sash windows can make the specification more expensive than the raw window count suggests.
Quick price answer: Six medium standard uPVC windows model at £2,006–£3,644, eight at £2,674–£4,859 and ten at £3,343–£6,074. A front bay or sash specification should be added as its own product rather than treated as an ordinary casement.
Terraced-house window budgets
These illustrate the effect of window count before special openings are added.
Figures are modelled UK-average fitted-market estimates from the Window Price Calculator engine, using its 24 September 2026 research refresh. They include ordinary removal, standard fitting, basic making good and VAT; scaffolding, hidden structural repairs and highly bespoke work can sit outside the range.
Terraces often have one expensive feature opening
Averages can hide the part of the project that matters most.
Front bay
Many Victorian and 1930s terraces have a projecting front bay. Price it as a bay window because the frame geometry and installation differ from flat casements.
Rear opening
Extensions and kitchen alterations often add French, patio or bifold doors, which can materially increase the combined project total.
Good terraced-house estimate checklist
Use the actual openings rather than bedroom count.
- Front and rear first-floor windows.
- Ground-floor bay or feature window if present.
- Bathroom, landing and small side/rear openings.
- Any rear French, sliding or bifold doors.
Use your own project
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Questions people ask
How much does it cost to replace windows in a terraced house?
For roughly six to ten standard medium uPVC windows, our model gives £2,006 to £6,074 before bays or premium specifications.
Are terraced houses cheaper to reglaze than detached houses?
They often have fewer elevations and therefore fewer openings, but the actual window schedule matters more than the property label.
Should I count a bay as three windows?
For pricing, use a bay-window product rather than treating each bay section as an unrelated standard casement.
Start with the real number of openings in your terrace.
Add the standard windows first, then add the bay and any rear doors separately.
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