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Whitfield Rear Extension · Quote #Q-2026-1042
Ghiran Construction Ltd
London · 07557 644022 · ghiranconstructionltd.co.uk
Quotation
Q-2026-1042
04 June 2026
Prepared for
Mark & Helen Whitfield
42 Elm Road, Chiswick W4 5AB
mark@whitfield.co.uk · 07712 884 220
Project
Rear Extension · 480 sq ft
Victorian property · Premium finish
Estimated duration: 23 weeks
Scope of works
Construction of a 4.8m × 5.2m single-storey rear extension including foundation works, brickwork to match existing, pitched roof with two skylights, kitchen-diner fit-out, full electrical and plumbing first/second fix, plastering and decoration to client specification.
| Item | Description | Amount |
|---|---|---|
| Materials | Bricks, timber, plasterboard, fixings, insulation | £28,400 |
| Labour | In-house crew · 14 weeks | £19,800 |
| Sub-contracted trades | Roofing, electrical, plumbing, plastering | £16,200 |
| Overheads | Scaffolding, skips, site setup, insurance | £4,800 |
| Contingency (10%) | Unforeseen structural works | £6,920 |
| Builder margin | Profit · 22% | £22,000 |
| Subtotal | £98,120 | |
| VAT (20%) | £19,624 | |
| Total | £117,744 | |
Payment schedule
Deposit on signature10%£11,774
Demolition complete20%£23,549
First fix complete30%£35,323
Second fix complete25%£29,436
Practical completion15%£17,662
Assumptions
- Planning permission already granted
- Free site access between 7am–6pm
- Existing drainage to be re-used
Exclusions
- Party-wall surveyor fees
- Decorative landscaping
- White goods and furniture
This quotation is valid for 30 days. Works commence upon receipt of signed contract and 10% deposit. Standard JCT terms apply.
Quote_Whitfield_Q-2026-1042.pdf
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