Loft Conversions in Guildford & Surrey

Most loft conversions, including rear dormers, fall under Permitted Development rights and do not need a planning application. Hip-to-gable conversions and any work that extends beyond the original ridge height are more likely to require permission. We review your property and advise you before any costs are committed.

We carry out Velux (rooflight) conversions, rear dormers, hip-to-gable conversions, and full mansard conversions. The right type depends on your roof structure, the headroom available, and your budget. We will recommend the best option after a site visit.

As a general guide, you need at least 2.2 m from the floor joists to the ridge to create a usable room. We will measure your loft during the initial visit and confirm whether conversion is viable and what headroom the finished room will achieve.

A straightforward Velux conversion typically takes 4–6 weeks. A dormer conversion usually runs 8–12 weeks. More complex projects involving hip-to-gable work or en-suite bathrooms can take longer. We agree a detailed programme with you before work starts.

A well-executed loft conversion typically adds 15–20% to a property's value and is one of the highest-return home improvements available. Adding a bedroom and en-suite is particularly effective in the Surrey market where space is at a premium.