Mansard Loft Conversions
A mansard loft conversion alters the structure of a sloping roof to a near straight slope at an angle of 72 degrees. Windows are built into the roof as small dormers or even Juliette balconies are feasible. The mansard conversion is usually erected to the rear of a property and is often considered one of the most aesthetically pleasing types of loft conversion. Planning permission is usually required.
Mansard loft conversions can often give the biggest results in terms of additional living space, although they generally also involve the most construction work. However, as with all London loft conversions, they are more affordable and less stressful than moving house.
What is a mansard loft conversion?
A mansard loft conversion is usually built to the rear of your property and alters the structure of your sloped roof so that it has an almost straight gradient of 72 degrees. Windows are built into the new roof structure as small dormers; you can even have a Juliet balcony and the conversion is generally big enough to support multiple room configurations such as two bedrooms and a bathroom.
Mansard loft conversions are suitable for most types of properties – including mid-terraces and can be finished in a variety of ways to match your property. View our Mansard Loft Conversion ideas and work.
Do mansard loft conversions in London require planning permission?
Because mansard loft conversions alter the structure of your home, they usually do require planning permission. You should always check with your Local Authority in London to find out about their planning policy requirements as some are stricter than others.
As well as planning permission, your completed mansard loft conversion will require building regulations approval. Our FAQ section has more information on the processes involved in this and planning.
Which Houses are the Best for a Mansard Loft Conversion?
Mansard roofs are particularly common in London and this provides a great opportunity to make most of the benefits from a mansard loft conversion. Mansard loft conversions are generally cheaper to build compared to a flat roof conversion as well as being suitable for most types of properties from detached to semi-detached and even terraced houses. Most houses can typically have a mansard loft conversion.