Unlocking Your Roof Space
A loft conversion is often the most cost-effective way to add a master suite or home office to a London property. However, the type of conversion you choose will dictate the space you gain, the structural work required, and whether you need planning permission.
1. The Rear Dormer
This is the most common type of conversion in the UK. A box-shaped structure is added onto the rear pitch of the roof, creating vertical walls and a flat ceiling. It significantly increases head height and usable floor space, and often falls under Permitted Development.
2. The Mansard Conversion
Named after the 17th-century French architect François Mansart, this involves a massive structural change. The party walls are raised, and the roof is altered to have a flat top and slightly sloping (usually 72 degrees) sides. It maximizes space but almost always requires full planning permission.
3. Hip-to-Gable
Ideal for end-of-terrace and semi-detached homes, this involves extending the sloping 'hipped' side of the roof outwards to create a vertical 'gable' wall. This creates a huge amount of internal volume where headroom was previously restricted.
Choosing the right style depends entirely on your existing roof structure, your budget, and local planning constraints. Consult an architect to explore your property's true potential.