Single-Storey Rear
Open up the back of the house with a kitchen-diner extension, roof lantern and bi-folds onto the garden.
- Up to 6m projection
- Steel beam & foundations
- Building Control included
From£38,500
Real numbers, not "from £POA". Every quote we issue is fixed-scope — what's drawn is what's built, at the price agreed. Below are honest indicative ranges to help you budget.
Open up the back of the house with a kitchen-diner extension, roof lantern and bi-folds onto the garden.
Add living space below and a bedroom or bathroom above — the most cost-efficient way to gain real square footage.
Reclaim the dead alley space beside a Victorian terrace and wrap it round the back for a vast open-plan kitchen.
A flat-roof rear dormer to create full standing height — the workhorse conversion for terraced and semi homes.
Build out the hipped roof to a vertical gable, then dormer the rear — the maximum loft on a semi-detached.
A full strip-back and reconfiguration — rewire, replumb, new kitchen & bathrooms, structural openings, decoration.
Ranges below assume standard ground conditions and a finished-to-decoration spec. Your fixed quote is confirmed after the free site survey.
| Package | What's Included | Typical Build | Indicative Price |
|---|---|---|---|
| Single-Storey Rear Extension | Foundations, steel, shell, glazing, plaster, M&E first fix | 8–11 weeks | £38.5k – £68k |
| Double-Storey Extension | Two-floor build, party wall, roof, full first & second fix | 12–18 weeks | £74k – £120k |
| Side-Return / Wrap-Around | Underpinning, glazed roof, open-plan reconfiguration | 10–14 weeks | £52k – £95k |
| Dormer Loft Conversion | Structure, staircase, dormer, insulation, plaster, ensuite | 7–9 weeks | £32k – £52k |
| Hip-to-Gable + Dormer Loft | Gable build-out, ridge works, master suite, ensuite | 9–12 weeks | £46k – £72k |
| Whole-House Renovation | Strip-out, rewire, replumb, kitchen, bathrooms, decoration | 14–24 weeks | £55k – £180k |
| Architectural & Planning Package | Measured survey, concept & detailed drawings, planning submission | 4–8 weeks | £2.4k – £6k |
Prices exclude VAT and are illustrative for budgeting only. Final scope and cost are fixed in writing before any work begins. Kitchens, sanitaryware and high-end finishes are specified to your allowance.
Every fixed quote covers the things lesser builders bury in "extras". You see the whole cost up front.
Book a free site visit and we'll turn these ranges into a real, fixed-scope quotation for your home.