L Shaped Loft Conversion

L Shaped Loft Conversion

L-Shaped Loft Conversions

L-shaped Dormer Conversion involves building two dormers that are connected to each other. One of the dormers is built on the main roof itself and the other to the rear of the roof which gives the distinctive L-shape dormer. Due to its unique shape, this type of loft conversion is only suited for Victorian and Edwardian properties where there is a back addition at the rear of the house. 



How much does an L-Shaped Dormer Loft Conversion Cost?

An L-shaped loft conversion is not one of the cheapest options out there. Our Prices start from around £46,000 for an L-shaped Loft Conversion in London. There is more technical structural work involved as the roof will be removed and rebuilt again. You might need planning permission depending on the limitations of permitted development rights, so do factor in these costs and time constraints as a result. Do you want to see what is possible with your loft space and get the approximate costs of the conversion? We offer a full design-to-build service and can kick-start your project quite quickly.

Does an L-Shaped Loft Conversion Require Planning Permission?

Most L-shaped Loft Conversions generally do not need planning permission as they fall under permitted development rights. We still recommend you check with your local authority's planning portal as the rules vary from borough to borough. If your planned conversion is higher or wider than your existing roof, or if it is more than 40 cubic meters ( terraced house) or 50 cubic meters (other properties), you will be required to make a planning application. The permitted development rights allow you to extend your property without the need for planning permission as long as all building regulations and planning permission guidelines are followed. At Loft Conversions Company we strongly recommend lawfulness certificates are obtained from planning to mean that you hold an official document of your development being legal.

Is my Property Suitable for an L-Shaped Loft Conversion?

An L-shaped Loft Conversion extends over the rear extension of your property that already exists in many Victorian and Edwardian Houses across London. It's ideal for Edwardian and Victorian terraced houses where there is a rear addition usually in the form of a kitchen on the ground floor and a bathroom above it. This means you have a good area to build over and achieve a much larger loft conversion. An L-shaped loft conversion adds significant amounts of space to your property and both the dormers will have good head height too. 


Getting an L-shaped loft conversion rather than choosing just a simple dormer loft can provide you with a much bigger floor area and headspace. Considering you hire the expert team we have at Loft Conversions Company, you’ll be looking forward to a charming layout arrangement that’s sensible and fairly affordable for you. Depending on the size of your property, an L-shaped loft can increase your house’s existing space by 20 to 50 sqm. Either way and for whatever purpose you’ll like to use your newly built loft, rest assured that our experienced builders will utilize every bit of space under that pitched roof of yours.


If you’re looking into investing in a saleable property, opting for a loft conversion for your house will be a great choice. This is because an architect-designed L-shaped loft conversion can add a terrific amount of value to your property, besides the fact that it maximizes the space available well. Just make sure that you’ll be able to process the loft conversion right as owning a beautifully built loft will surely lead you to banking some neat profit for yourself once you put your house for sale in the future.


Any home construction should follow building regulations and that does not exclude a loft conversion. Getting building regulations approval is vital before the loft conversion starts at your house since this will determine that the building plan will be compliant with the categories that play a factor in the standard building regulations. If you’ll employ our team at Loft Conversions Company, you’ll be guaranteed a detailed proposal that will lead to an approved building regulations certificate. We’ll make sure to comply with the standard protocols when it comes to converting a loft and building your room with the appropriate measurement of headroom, insulation and electrical will be carefully installed, and soundproofing will be taken into careful consideration as well.


Relocating while the loft conversion happens in your home is only optional. You will not be required to move out unless you’re totally bothered by the construction that is presently occurring in your house. You don’t have to worry though if you’ll acquire our services since our expert builders will do their work with minimal disruption so you can continue your daily activities without any hassle. We’ll make sure that in the span of 6 to 12 weeks, you’ll be enjoying your new L-shaped loft already. Choosing to stay in your house will also be advantageous for you since you can easily check the progress of the project and see if it’s being done according to your plan. However, if you still decide to leave for a while, you can freely do so and come back only once the loft conversion is complete.

What can we do for your Property in ?

If you would like to discuss the ways in which a Loft Conversion could enhance your home, call us on 0208 1020 675 or email to ask us any questions. For a free site survey and design consultation please fill out the form on the right and our team will get back to you as quickly as possible.