There are several different types of loft conversion available, so how do you choose the most suitable for your particular project?
Fortunately, Allied Lofts are here to guide you through the process. Each different type of loft conversion has pros and cons, mainly revolving around cost, planning permission requirements and amount of extra space available. Here we provide a simple guide, comparing the merits of each type of loft conversion.
Dormer Loft Conversion
A dormer loft conversion is an extension built to protrude from the existing sloping roof. It creates more usable space with extra headroom and more natural light.

There are a variety of different types of dormer loft conversion. The one most suited to your property depends upon the type of property (terraced, semi-detached or detached) and the shape of your existing roof.
-
Flat Roof Dormer
This is the most popular type of dormer in the UK. As well as being the cheapest to build, it offers the most additional internal space.
-
Shed Roof Dormer
Similar to a flat roof dormer, but the single plane roof slopes downwards at a shallower angle than the roof itself. Often used on properties with a gable roof.
-
Gable Fronted or "Dog House" Dormer
A more attractive option which comprises of a gable wall extension built up to the existing ridge line and a new roof section built outwards to the new gable end.
-
Hipped Roof Dormer
Similar to a gable fronted dormer, but featuring 3 sloping planes of a hipped roof converging at the ridge of the dormer.
Allied Lofts will help you ascertain the best type of dormer for your project.
Hip to Gable Loft Conversion
A hip to gable loft conversion is a popular option for hipped roof properties (roofs which have 3 or more sloping sides) such as detached and semi-detached homes, end terraces, bungalows, etc.

The conversion basically extends the side roof area so that the hipped roof which formerly sloped inwards becomes a vertical wall, so the roof becomes a gabled roof and you gain extra usable space inside the loft.
Mansard Loft Conversion
A mansard loft conversion is the best option for maximising the additional space but they generally involve the most work and therefore cost compared to other options.

The mansard loft conversion effectively changes the slope of the roof to an angle of 72 degrees, and adds a flat top. Windows are built into the new structure as small dormers.
Let Allied Lofts Guide You
To establish which type of loft conversion is right for your project, we would love the opportunity to discuss your requirements.
The process begins with us coming to your property to do a site survey. Our experienced surveyor will listen to your requirements, be able to answer any questions you may have, advise you of the different options available and any potential pitfalls.
Once we understand in detail what you want, we will provide an accurate quote. Assuming this meets with your approval, we schedule your work in and provide you with a project manager who will oversee your project to completion. It's really that simple.
Let's Get the Ball Rolling
If you think Allied Lofts could help you to create something truly special from your unused loft space, then why not get in touch with us today?
For an informal chat to discuss your ideas and requirements, simply call us on the number below, or request a call-back by filling in the form on our contact page.
0207 272 5009
Phone lines open from 8am to 6pm.

Allied Lofts is partnered with Allied Landscapes
Offering high quality landscape design and gardening services:
- Garden trellis and fencing
- Trees and shrubs
- Grass and artifical lawns
- Patios
- Garden wall constructions

Allied Landscapes and Allied Lofts are part of Allied Building Maintenance Contracts Ltd.
Allied Building Maintenance Contracts Ltd are a one of Londons most established and reputable building construction and renovation specialists. We work closely with award winning architects to deliver quality building services to a arange of commercial and residential clients across North London.
We specialise in:
- Conceptual design
- Extensions
- Refurbishments
- New builds
- Project Mangagement
- Quality
- Reliability
For a full overview of the building, renovation and refurbishement services we offer, visit us at alliedcontracts.com or contact us on 0207 272 5009 or email us at enquiries@alliedcontracts.com