What is a rear dormer loft conversion?

This type of loft conversion is by far the most popular in the UK. The back existing slope is removed and built up vertically from the rear elevation. Rear dormers are sometimes built directly up from the property’s back wall or, in some cases, they are stepped in slightly to ensure the loft conversion adheres to the local council’s regulations. Although rear dormer roofs may seem flat and are even called flat roofs, the external layer of the roof does in fact have a slight slope to allow for rainwater to run off and fall into its gutter. The dormers internal ceilings remain completely level.

Benefits of a rear dormer extension

A rear dormer conversion can turn a cramped attic into a beautifully light open space. This new space can then be used for bedrooms, bathrooms or even that airy office you’ve always wanted. With the opportunity to include Velux windows on the front roof, which sits opposite the dormer windows, this new space certainly won’t be lacking in light. Another popular option for rear dormers is to add French doors to the dormer face for that extra special touch.

Rear dormer conversion

Exterior finish options

The exterior finish of a rear dormer conversion can either be brick, tile hung, slate hung, rendered or cladded. If your choice is to go for tile or slate, the type will be chosen on site to ensure they match the existing roof as close as possible. If the plan is to do a rendered finish, we have skilled plasterers who can create lots of different render designs to match the existing finish. If you decide on brick, the brick used will match your existing brickwork. Other external finishes such as fascias, soffits, gutters and windows will also be matched to the existing finishes — this way, the rear dormer conversion will look like it was part of the original build!

Exterior finish options

The exterior finish of a rear dormer conversion can either be brick, tile hung, slate hung, rendered or cladded. If your choice is to go for tile or slate, the type will be chosen on site to ensure they match the existing roof as close as possible. If the plan is to do a rendered finish, we have skilled plasterers who can create lots of different render designs to match the existing finish. If you decide on brick, the brick used will match your existing brickwork. Other external finishes such as fascias, soffits, gutters and windows will also be matched to the existing finishes — this way, the rear dormer conversion will look like it was part of the original build!

Will you need planning permission?

If your property has permitted development rights, you can build a rear dormer conversion under a Certificate of Lawfulness. This certificate means that, as long as you build within the council’s guidelines, you do not need to wait for the application to be approved before work commences

If you do not have permitted development rights, you will need to obtain planning permission. With planning permission, you cannot start work until it has been granted. Once a planning application is validated with the council, it should issue a decision after eight weeks.

Here at The Loft Room, we will ascertain exactly which permission is needed and will submit the relevant applications on your behalf to obtain the correct approval.

Useful Links

Planning Requirements
Party Wall Information

Call us now for a FREE no-obligation quotation on 0800 002 9291

Got a question about your conversion?

Learn more