Dormer Loft Conversions


A Dormer loft conversion is one of the most popular and practical ways to create more usable space in your loft. It involves extending a section of the roof vertically, usually to the rear, to form a box-shaped structure with full head height. This instantly opens up the loft and makes it feel like a natural part of your home.

Why Get a Dormer Loft Conversion?

Dormer conversions are all about maximising the usable floor space and head height in your loft. By building outwards from the roof, you’re creating a full-height room that feels like a true extension of your home. It’s particularly valuable if you want to include a proper en suite bathroom, fitted wardrobes, or even just walk around without stooping.

Dormers are also ideal when you need to accommodate a staircase to the loft. In many homes, especially older terraces and semis, a standard Velux conversion doesn’t allow enough space for safe stair access, but a Dormer does.

What Type of Property is a Dormer Loft Conversion Suitable For?

Dormer conversions work brilliantly on terraced, semi-detached, and detached homes. They’re particularly effective on houses with a traditional pitched roof and an adequate ridge height (the highest point inside your loft). If your loft already feels a bit roomy, a Dormer can unlock its full potential.

They are also a go-to for Victorian and Edwardian properties found throughout Manchester and the North West, where the loft space has a decent footprint but limited standing height towards the eaves space.

Benefits of a Dormer Conversion

  • More space, more light – Dormers add both headroom and usable floor area, giving you a room that feels big, bright and open.

  • Better access – Adding a Dormer often creates the space needed to install stairs without compromising existing rooms.

  • Perfect for bathrooms – The vertical walls of a Dormer make it much easier to fit a full-height shower and proper bathroom fittings.

  • Flexible layout – The new space can be arranged however you like, bedroom, office, playroom or chill-out area.

  • Strong ROI – A Dormer loft conversion can add significant value to your home, especially when done to a high spec.

Things to Consider

  • Conservation areas and listed buildings often have restrictions

  • Covenants or previous extensions might limit what’s allowed.

  • You'll need to think about external finishes, tile-hung, rendered or clad? We’ll help you match it to your existing property.

  • A rear Dormer will typically face into your garden, but privacy or overlooking rules may apply in some layouts.

What Rooms Is It Good For?

  • Master bedroom with en suite

  • Teen bedroom

  • Home office or studio

  • Guest room with extra storage

  • Playroom or hobby space

How Long Do They Take?

From start to finish, most Dormer conversions take around 5 to 8 weeks. The timeline includes structural work, insulation, electrics, plastering, and finishing touches. We'll provide a clear schedule from the outset so you always know what's happening and when.

Does It Need Planning Permission (UK)?

Dormer conversions typically add between 20% and 25% to your home’s value, especially when adding a new bedroom and bathroom. This makes them one of the best ways to improve both your living space and your investment in the property.

Increase in House Value

Dormer conversions typically add between 20% and 25% to your home’s value, especially when adding a new bedroom and bathroom. This makes them one of the best ways to improve both your living space and your investment in the property.