Build the allowance
How to read this price
Starting allowance
For a straightforward, accessible job with a standard specification.
From £350 per window
Typical UK project
An early planning range before a tradesperson inspects the property.
£500–£1,200 per window
Likely programme
Site time varies with preparation, sequencing, approvals and drying periods.
1–3 days
These figures are early UK planning allowances. They are not a substitute for an itemised quotation after inspection.
Control the variables
What can change the quote?
Bespoke versus standard dimensions
Timber, glazing and ironmongery choice
Removal and making good
Decoration and fire-rating requirements
Before accepting a quote
Ask for these details in writing
- Labour, materials and VAT
- Preparation and protection
- Access equipment and waste
- Named provisional allowances
- Testing and certification
- Programme and payment stages
- Making good and decoration
- Warranty and snagging process