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  • Neil Harrison

Costing your Home Extension? But, does it add value to your home?

Updated: Jun 13, 2023

Mint Builders is pleased to say that there is positive range and programme of home extension and renovation scheduled for our expert team, as the shoots of hope for a better day to day life emerge as Spring begins to arrive.

We have reported here on this blog of late how many quality property related operations across the country have noted that many home-owners have concluded that more and better space is perhaps needed for the future and that a home extension and renovation, is for many, a better bet and less challenging than moving to a new home in a testy and sometimes irrational housing market.

how much is it?

Key to a home extension or renovation is, of course, - the budget! It's more immediately a question of how much is it? But it is also about - 'what do I really need to do to be sure I get the best value from our new home project. One also needs to ensure that there really will be more value in your property because of the extension when you eventually sell-up and move on.

advice and support

If you have a project in mind, we at Mint Builders are always on hand here in Cheltenham and the Cotswolds to guide, advise and support all kinds of home-owners on their home extensions and renovations. There are not many projects - if any - within the genre that we haven't handled over the years, and we are pleased to help in any way we can of course.

project pricing

So, reference then that always vital issue of project price and value - and spotted online by our Editor recently was some financial 'ball-park' type pricing guidance from the well-considered and well-informed team at

What this well-tabled information offers are some useful considered pointers on project price ranges of all kinds of extension and renovation type projects. This information is very much worth taking a look at for sure - to get those early stage planning thoughts underway. If you do this, then the scale of your plans will clarify further as your project emerges in a little more detail in your mind.


You can then, more confidently perhaps, take the next step and collect some all important local soundings with specimen builder companies locally who you feel might just guide you further in developing your project and gleaning useful ideas on potential, value and pricing.

average cost

Reference home extensions – as an example - the homehow team indicate that the average house extension tends to be costed at between around £15,000 to £125,000. They indicate, quite obviously, that the cost of an extension will be dependent on the type of extension you choose to have. It also depends on its size and the quality of finish!

ballpark figures

They reference some ideal specimen figures – which you would of course follow up on when you chat further to certain local area companies you have selected to perhaps carry out your project for you. They offer some considered pricing as follows - a single-storey extension would cost around £21,000 to £100,000. This type of extension is, of course, a modest addition to a home, for such as a bathroom or adding more space to a kitchen or living room.

average pricing

The homehow team also highlight info on extension sizes and prices :- A small single-storey extension (15m2) has an average price range of £20,000 up to £30,000 with the range mainly being affected by the quality of finish and your location. A larger single-storey extension (50m2), they suggest, might cost anywhere from £70,000 up to £100,000. You could, they say also have a double extension. This features two floors and helps you to expand the space both downstairs and upstairs at your home. The cost of a double extension ranges from about £42,000 to £200,000.

specific extension types

There are also more specific extensions you might consider. These can includes kitchen extensions, which they suggest have a price range from £10,000 to £60,000 and also bathroom extensions which could cost between £6,000 to £30,000. You can also enhance the front of your home with a porch extension (typically built around your front door) which costs approximately £1500 to £7000. The location of your extension will also determine the price.

rear extensions

They also highlight often favourite rear extensions which could cost around £15,000 to £80,000. These are normally added to homes with a larger garden space. If you have room at the side of your home, you may also want to consider a side extension which might cost from £20,000 to £120,000. You could also even consider a side-return extension - which is use of space on the side of your home. This can be valuable to expand certain rooms within your home. A side return extension costs from around £9000 to £28,800. For properties with more exterior space, you can choose a wrap-around extension for £40,000 to £180,000- which covers two or more sides of the home.

'ballpark' figures

Remember all the above information are very much considered reference figures – but they surely offer a guidance which will help gets those project planning thoughts of yours in a little more focus. To end on, we'll also mention another popular option - a prefab extension. This is a pre-constructed building which is built in a factory then shipped and installed quickly by a professional team of tradespeople. This extension type normally costs between£18,000 and £65,000. Now you know!

We at Mint Builders are here to help with any pricing and questions and ideas relating to the priority planning and organisation of your home extension or renovation for 2021. We have the expert contacts on hand to help ensure your new extension, whatever its size, type and price gets sorted exactly the way you want it to be

Please request your project planning and quotation visit to refurbish or extend your home for Summer 2021. Contact Mint Builders on 07734 211958 or email

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