Living room with floor-to-ceiling glazing, a timber-lined ceiling and a leather sofa

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Tell us what you’re planning and we’ll show you a realistic starting figure, based on the kind of work we deliver across South East London every week. It takes under a minute, and nothing is sent to us until you decide to ask for a quote.
Cost calculator

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Our cost of extension calculator helps you quickly assess the feasibility of your home renovation project. Just fill out a few details and we’ll break it all down for you.

What type of home do you live in?
What type of project are you planning?
What kind of loft?
How much extra space do you want to add?
What kind of extension?
How much extra space do you want to add?
Floor Area
Scope of Remodeling
Property Size
Do you already have drawings or plans?
Do you know if planning permission is needed?
Is your house listed or in a conservation area?
Will you need to remove internal walls to make it open-plan?
What kind of doors would you like to the garden?
Would you like roof windows or skylights?
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