The different types of loft conversions (with examples)

If you’re thinking about turning your loft into usable space, the first step is choosing the right type of conversion. Roof light, dormer, hip-to-gable, and mansard are the main options, each offering different levels of space, cost, and complexity.

Below, we’ll run through the main types of loft conversions with simple explanations and examples to help you understand what might work for your home.

Roof light loft conversion

This is the simplest type of loft conversion. It involves adding skylight windows (roof lights) into the existing roof slope without changing its shape. Because the roof stays the same, the work is usually cheaper and quicker than other options.

Best for: Homes with enough head height in the existing loft.

Example: A couple in a semi-detached house in Stockport added two large Velux windows and turned their loft into a quiet office.

Dormer loft conversion

A dormer projects out from the slope of the roof, creating a box-shaped extension. This adds extra headroom and floor space. Dormers are the most common loft conversion in the UK.

Best for: Terraced or semi-detached homes where extra standing space is needed.

Example: A family in London added a rear dormer to make space for a new master bedroom with an en-suite.

Hip-to-gable loft conversion

This type involves extending the sloping side of a hipped roof outwards to form a vertical wall (a gable). It gives you more usable floor area and is often combined with a dormer for even more space.

Best for: Detached and semi-detached houses with a hipped roof.

Example: A homeowner in Manchester converted their hipped roof into a gable and added a rear dormer, turning the loft into two bedrooms.

Mansard loft conversion

A mansard changes the shape of the whole roof, usually with a flat top and steep sides. It creates the maximum amount of extra living space but also needs more structural work and planning permission.

Best for: Townhouses or larger properties where maximum space is needed.

Example: A Victorian terrace in Brighton was transformed with a mansard loft, adding a bright open-plan bedroom and bathroom.

Which loft conversion is right for you?

• On a budget? A roof light conversion is the most cost-effective.
• Need more space? Dormer or hip-to-gable conversions offer a good balance.
• Want the maximum? A mansard will transform your loft into a whole new floor.

Before making any decisions, check if you need planning permission and always make sure the design meets building regulations.