We explain the four different types of loft conversions | Landmark Lofts

Types of Loft Conversions 

There are three basic structural alterations which you can make to convert your existing loft into a beautiful and liveable space, each of which can be achieved with our cutting-edge modular loft technology.

Factory-built with ultra-strong steel frames, our modular lofts can come in any configuration to suit your property, and are installed in as little as 14 days. The type and layout of your modular loft conversion will depend on factors such as the type and age of your property, the existing roof layout, local authority development plans, as well as your own personal preference.

Almost all properties are suitable for a modular loft conversion. To find out more about modular, click here, or you can get a quote online here. Alternatively, you can contact us to arrange a free visit from a member of our design team and they will give you advice based on your borough, your personal requirements, and the type of property.


A dormer is a timber or, in the case of our modular loft conversions, a steel structural extension, often hung in tile or slate, which projects vertically from the plane of a sloping roof. It usually protrudes from the rear roof slope of a house. Dormer loft conversions are a popular option for London homeowners in need of a lot of additional space because they provide a large floor area, and a good head-height is achievable in the majority of the new space.

With traditional dormer loft conversions, most of the construction work is conducted externally using scaffolding at the front and rear of the house, over the course of around 8-12 weeks. However our modular loft conversions are built in a factory and then simply craned into position on top of your home, with aninstallation time of as little as 14 days. Provided that you do not have any existing extensions and you meet your borough's  criteria, planning permission is generally not required.


A mansard is constructed by raising the party walls (the walls shared with neighbouring properties) on either side of your house, and then adding a frame between the two new wall extensions. The rear face of a mansard has a shallow slope backwards, which gives a finished head-height that is slightly less than in an equivalent sized dormer.

Mansard style loft conversions offer many of the same advantages as dormers, although mansard loft conversions are regarded by some as being more aesthetically pleasing, especially on older properties. The existing roof shape and structure of mansard loft conversion properties must be changed, which almost always require planning consent. Just as with dormer loft conversions, mansard loft conversions can be built with Landmark’s modular technology.


Hip-to-gable loft conversions are suitable for homes that are detached or semi-detached and have existing hip-end roof structures, meaning that the sides of the roof slope inwards towards the top, or ridge of the roof. Hip-to-gable loft conversions extend on the sloping sides outwards, effectively replacing the sloping roof with a vertical wall (gable) that is the same height as the ridge, filling the space in between. If your home has two sloping sides you can even opt for a double hip-to-gable loft conversion to add even more space.

This style of loft conversion is usually combined with a dormer or mansard loft conversion to create a usable additional floor to your home. Hip-to-gable loft conversions are an attractive option for homeowners because they generally fall under permitted development, and don't require planning permission. Modular hip-to-gable lofts are built wholly with a steel frame, but include an external brick slip cladding which will match the colour of your existing walls, ensuring your new loft blends in with the rest of your home and resembles an original feature.

Visit our projects page to see a wide range of beautiful loft conversions and extensions across London.

Landmark Lofts is part of the Landmark Group - the only group in London specialising in the project management of loft conversions, extensions and refurbishments to include a Chartered Building Company (CIOB), Chartered Architectural Practice (RIBA) and to be regulated by the Royal Institution of Chartered Surveyors (RICS). The Landmark Group specialises in the project management of loft conversions, extensions and refurbishments.

Click here to learn more about these regulators and why they're so important for you.

Royal Institute Chartered Surveyors
Chartered Institude of Builders
Roya lInstitude of British Architects
loftconversions in London, Greater London, UK on Houzz
loftconversions in London, Greater London, UK on Houzz
loftconversions in London, Greater London, UK on Houzz
loftconversions in London, Greater London, UK on Houzz

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