Hip-to-Gable
A hip-to-gable conversion extends the sloping (hipped) end of a roof out to a vertical gable wall, which makes the loft much larger. It suits detached, semi-detached and end-of-terrace houses with a hipped roof, and is often combined with a rear dormer. It involves more structural work than a dormer alone, which is reflected in the typical cost.
What to Know About Hip-to-Gable
- Makes the loft much larger on houses with a hipped roof
- Often combined with a rear dormer for a bigger room
- Can create space comparable to an extra storey
- Can sometimes be built under permitted development if it meets the volume and design limits
- More structural work than a dormer, so usually costs more
Price Guide
£50,000–£85,000
Typical UK range, last reviewed September 2026. A guide, not a quote.
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Frequently Asked Questions
Is a hip-to-gable conversion suitable for my semi-detached house?
Hip-to-gable conversions are common on semi-detached houses with a hipped roof on the side away from the neighbour, and are often paired with a rear dormer. Whether it works for your house depends on the roof structure, the volume limits and any local planning restrictions — a loft conversion specialist or architect can assess it for you.
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