United Kingdom calculator
Window Replacement Cost Calculator
Estimate the cost to replace your windows in the UK. Adjust the number of windows, their size, frame and glazing, and whether you choose full-frame or insert replacement to see an itemised low–high range for your project.
How this calculator is built
Unit costs with sources
This model cites 3 sources across line-item unit costs, regional labor data, and tax references.
Regional labor adjustment
The region table applies local labor indexes only to labor-heavy line items.
Published methodology
The methodology page lists the formula, size drivers, labor model, and source links.
Estimate your project
Change the default inputs to match your scope. The breakdown updates by line item.
Window Replacement Cost by region: typical ranges
Each range applies that region's labor index to the labor-share line items of the default project; materials stay at national prices. Select a region for its full local breakdown and calculator.
| Region | Typical range | Labor index | Permit |
|---|---|---|---|
| East Midlands | £8,989–£13,483 | 95% | Likely |
| East of England | £8,989–£13,483 | 95% | Likely |
| London | £9,696–£14,544 | 112% | Likely |
| North East | £8,989–£13,483 | 95% | Likely |
| North West | £9,030–£13,546 | 96% | Likely |
| Scotland | £9,197–£13,795 | 100% | Likely |
| South East | £9,363–£14,045 | 104% | Likely |
| South West | £9,654–£14,481 | 111% | Likely |
| Wales | £9,114–£13,670 | 98% | Likely |
| West Midlands | £8,989–£13,483 | 95% | Likely |
| Yorkshire and the Humber | £8,947–£13,421 | 94% | Likely |