Home / Cost guides / Loft conversion cost Liverpool
Loft conversion cost in Liverpool (2026)
From around £27,500 for a rooflight conversion to £60,000 or more for a hip-to-gable with dormer, for a typical 25 m² loft. Here is how the main types compare in Liverpool and the North West.
Loft conversion costs in Liverpool by type
Typical 2026 costs for a 25 m² finished loft in Liverpool and the North West, before VAT, including a new staircase. These are our UK rates adjusted for the North of England.
| Type | 25 m² loft | Build time |
|---|---|---|
| Rooflight (Velux) | £27,500–£39,000 | 4–6 weeks |
| Rear dormer | £34,500–£48,500 | 6–8 weeks |
| Hip-to-gable with dormer | £41,500–£60,000 | 6–10 weeks |
| Mansard | £46,000–£64,500 | 8–12 weeks |
For your own floor area, use the loft conversion calculator and pick “North of England” as the region.
What pushes the price up
- Steelwork. Most dormers and hip-to-gables need steel beams to carry the new roof and floor.
- Head height. Less than about 2.2m from the top of the ceiling joists to the ridge usually means a dormer or more roof work.
- Bathrooms. An en-suite adds plumbing, drainage runs and fittings.
- Fire safety. A protected escape route, fire doors and mains-wired smoke alarms are needed to meet building regulations.
- Party walls. On terraces and semis, steels bearing on the shared wall usually need a party wall agreement.
Common questions
How much does a loft conversion cost in Liverpool in 2026?
Using our North of England rates, a 25 m² loft typically costs around £27,500 to £39,000 as a rooflight (Velux) conversion, £34,500 to £48,500 as a rear dormer and £41,500 to £60,000 as a hip-to-gable with dormer, before VAT.
What is the most common loft conversion in Liverpool?
Rear dormers are the most common on terraced and semi-detached houses, because they add full-height walls and much more usable floor. Hip-to-gable conversions suit semis and detached houses with hipped roofs.
Do I need planning permission for a loft conversion in Liverpool?
Many loft conversions are permitted development, within 40 m³ of extra volume for terraced houses and 50 m³ for semi-detached and detached houses. Mansards, front dormers and homes in conservation areas usually need planning. All loft conversions need building regulations approval.
Pricing a loft conversion in Liverpool?
We are based in Liverpool. Send us the drawings and we measure every item, from steels and joists to fire doors, and price it at current North West rates. Back in 3–5 working days.