Basement Conversion - Online Cost Calculator

What kind of home do you live in?

Wondering why we ask? The type of home you live in gives us an idea about the different designs that could work well with your property.

Flat Detached House Terrace Semi-detached

Please select any of the following that apply.

Why does this matter? Homes with special conditions benefit from more design time to make sure every last detail is just right.

My home is a listed building I will need to carry out some demolition My home is in a conservation area My home is in a remote or unsual location I have a sloping site or difficult ground The property in a green belt area

Which part of your property would you like to convert?

There can be many different ways to convert a property, but by telling us which type you feel is best for your home means we can provide a fixed fee.

Loft conversion Garage conversion Basement conversion Outbuilding (e.g barn)

How big is the space you want to convert?

Not sure? Don't worry - a rough measurement will do. As part of our service, we give you the estimated added value to your property. This estimate varies depending on the size of your project.

Please select one extension or conversion

How many of each room type would you like to include?

Wondering what to include? Choose the types rooms that you imagine your dream space having. Hallways, garages, porches and landings do not count as rooms.

How about the finish quality?

Why does this matter? We also pass on an estimate of the value that a Home & Maker project could add to your home. Finish quality can influence this figure.

I would like luxury fittings. I am happy with a standard finish. I am looking for an economy finish.

When are you looking to appoint an architect?

within 1 month

in 3 months

in 6 months

in 12 months

Please enter your postcode

We use your postcode to search for construction costs that are accurate to your area.

Please enter your details

You can manage your interactive instant quote on the next page. A copy of your confidential quote will be sent to your email with a link to your private dashboard. We do not share your details with 3rd parties and will not send promotional adverts to you.

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