London's Leading Loft Conversion Specialist


Looking for a London loft conversion quotation?

A loft conversion is a great way of adding extra space and value to any property, particularly in London, where space is at a premium.  The size and specifications of the loft will determine the cost, as every conversion in London we complete is tailor-made to customer’s specific needs, so understandably prices can vary considerably.

Some examples of loft conversions include:

Low Cost – Skylight / Velux Loft Conversion

A Velux window loft conversion, often referred to as a ‘skylight conversion’ is one of the most cost-effective types of conversion, as well as being the least disruptive. This is because the roof of the property is not altered in any way and only windows are added, which generally doesn’t require any planning permission. 

Mid-Range Cost – Dormer Loft Conversion

Dormer loft conversions tend to the most popular in the London area, as it provides a good amount of head height and has the ability to add up to 50 cubic metres of extra space to your property. Generally, the dormer is built out of the slope of the roof, meaning that most of the work can be carried out from scaffolding outside of your home and the conversion tends not to require planning permission.

High Cost – Mansard Loft Conversions

Due to the altering of roof structure, mansard loft conversions tend to be the most expensive and do generally require planning permission. With that said, a mansard loft conversion is also considered one of the most aesthetically pleasing types, and a lot more specifications are available to the customer.

Contact Simply Loft

More information about the conversions above, and many more types, is available in our loft conversion planning resources.

Every project delivered by Simply Loft comes with a number of high spec features, including windows, flooring, plumbing and electrics and we can also deliver bespoke options.

Contact us today to discuss your loft conversion requirements and book a free no obligation site survey.  Simply call 0800 917 7571 today!

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Monday to Friday 9am – 5pm

(excluding bank holidays).

Saturdays 9am – 1pm

If you are an existing Simply Loft client with an enquiry, please use the following contacts:


(including pricing & contractual enquiries)
0800 917 7571

Architectural Services
(Design & Planning)
0800 917 7571

Construction Enquiries
(Live sites only)
Please contact your assigned Project Manager

Customer Service
(Project enquiries, customer support)
0800 677 1217

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Call us today on 0800 917 7571 Or fill out an online enquiry form, and our friendly advisors will arrange a free, no obligation site survey of your home.