Hip-to-Gable Loft Conversion Hampshire

A hipped roof slopes down on all four sides — including the two end walls of the property. Where a conventional gable-end property has a flat triangular wall at each end (the gable), a hipped roof has a further slope continuing down from the ridge. This dramatically reduces the usable floor area in the loft, because the sloping roof eats into the space on both sides and both ends.

A hip-to-gable conversion rebuilds the sloping hip — the end section of the roof — as a vertical gable wall. The roof ridge is extended to the new gable end, and the loft space underneath becomes fully usable for the first time. On a typical Hampshire detached house, this can increase the usable loft area from 20–25m² to 35–45m² — a gain of 50–80% in floor area compared to a dormer-only approach.

Because the external form of the roof is changed, hip-to-gable conversions require planning permission. Hampshire Build prepares the planning application drawings, design statement, and all supporting documentation required by your local planning authority. Our applications consistently achieve approval because our designs respect the character of the street and the proportions of the existing property.

The most popular combination in Hampshire is a hip-to-gable conversion on the side of a semi-detached property, combined with a rear dormer. This creates a full-width loft room — bedroom plus en-suite — that uses the full potential of the roof space on three sides.