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The most popular loft conversion type across Hampshire — and the one we design most often. A rear dormer creates a full-height room in your loft with minimal disruption and, in most cases, no planning permission required.
Hampshire Build prepares planning and building regulation drawings for Building Notice submission. Required structural calculations are prepared by an independent qualified structural engineer. Construction delivery is outside our package scope.
A dormer loft conversion extends vertically from the existing roof slope to create a box-shaped structure with a flat or pitched roof. Unlike a Velux conversion — which simply installs windows into the existing slope — a dormer breaks out of the roofline to create additional head height and floor space that would otherwise be unusable due to the sloping ceiling.
The vast majority of dormer conversions in Hampshire are rear dormers — positioned on the rear slope of the roof, away from the street. This is both the most structurally straightforward approach and, in most cases, the one that falls within Permitted Development rights, allowing the work to proceed without a formal planning application.
A well-designed rear dormer on a typical Hampshire three-bedroom semi-detached house can create a full double bedroom with en-suite bathroom — taking a property from three to four bedrooms and adding significant value. For detached properties, the dormer can span the full width of the rear slope, creating an even larger room.
Hampshire Build designs dormers across Winchester, Basingstoke, Southampton, Andover, Fareham, Eastleigh, and the surrounding areas. Our drawings are prepared to building control standard — ready for your chosen builder to price and construct without ambiguity.
Hampshire Build checks your property's exact planning status and advises on the correct route before any design work begins.
All prices exclusive of VAT. No hourly rates. Two rounds of design amendments included.
Discuss your dormer conversion with Hampshire Build. We will assess your property, confirm the design options available, and provide a fixed-fee price. No obligation.