The Ultimate UK House Renovation Calculator Guide You Need

If you are looking to purchase a new house or have already purchased your home and thinking of renovating it, let’s know some rough calculations before taking out your wallet. 

In this article, we’ll run through some of the home improvements you could make with your house renovation project and the expected increase in value you might achieve., assuming a £500k property (not investment advice.)

Garage conversion

Converting a garage to another functional room, such as a gym, office or man cave, could be a great idea and add value to your property. On average, you can expect to increase your property value by at least 10-20%, depending on the finish making garage conversions one of the better improvements on the list. 

Loft conversion 

Converting your loft to become an additional living space, such as a bedroom, an office, or a study, is a popular option for home renovations. Typically adding another bedroom with a loft conversion can add up to 10-21% increase in the property value. 


Building an extension on the back of your house is one of the best investments and one of the most popular options for people that have renovated their homes. Usually, it extends the kitchen and provides a lovely dining table space. Extensions generally increase property value by 10-20%

Open plan

An open-plan kitchen is a new way to live as a modern family. Open plan kitchen-dining can add anything from 6-8% value to your property. Cooking while hosting is a perfect combination.

Additional bathroom 

An additional bathroom makes your home appealing to the next buyer or tenant, especially having a downstairs and upstairs bathroom. You could expect a 7% increase in your property value by fitting an additional bathroom.


Resurfacing the drive with standard tarmac, gravel or brickwork for a high-end finish will undoubtedly increase the appeal of your property, especially for the convenience factor. Driveways can increase property value by 5-10%

Kitchen renovation

Fitting a new kitchen is something many people do every 5-10 years. It would be worth getting one fitted if your property needs a more lovely modern kitchen. A kitchen renovation would increase your property value by 5-75%. 


Conservatories can be a lovely addition to a home. Friendly, warm and bright. That said, conservatories don’t attribute much value to properties. Expect an increase of 5-6% in your property value.

Garden room 

lastly, we have the garden room. Building an external garden room in your back garden to be used as an office or retreat could be a great idea (especially if you are married!). Garden rooms add little value to a property so expect to increase your property by 3-5% (not much profit). 

And that’s it! That is your quick ‘UK House Renovation Calculator Guide’ If you are looking for a team of builders to help you with your home renovation in London, please get in touch today for a free quote

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