Garage Conversion

Garage Conversion

A garage conversion is a great way to add value to your home and increase your living space. Converting a garage is typically much cheaper than a house extension, and the work is carried out much faster than a new build.

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Converting a Garage

Garage conversions are becoming increasing popular throughout the UK. They are a quick and cheap way of adding extra space to a property, whether you need a spare bedroom, larger kitchen or want to expand your living room.

Below we have information on the rules & regulations, finding a builder, money saving tips and an overview on the average garage conversion cost.

Garage Conversion Cost UK

Compare Garage Conversion Prices

Are you looking to convert a garage into a living space or bedroom? We can help you find a great deal by comparing prices of local garage conversion professionals. To find out how much a garage conversion costs in your area, simply use the price calculator below.

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By comparing prices or requesting a quote, you help us raise £5 for an amazing charity. There is no cost to you, and there is no obligation to proceed. So, what are you waiting for? Find out the garage conversion cost in your area.

Garage Conversion Cost

There are a few important components that influence the cost of a garage conversion. The main factors are:

  • Garage Size – Larger garages will require additional materials and labour to complete the construction, and as a result they will cost more than a smaller garage. Whilst the cost will be higher for double garages, you will end up with a larger living space.
  • Type of Conversion – There are a lot of options available when converting a garage, and each room type will cost differing amounts. For example, a bathroom garage conversion costs more than a bedroom conversion due to the plumbing, tiling and fittings.
  • Location in the UK – A major factor in determining the cost of a garage conversion is your location within the UK. Typically, costs will be highest in London and the South East of England. Locations without local garage conversion builders will also cost more.

How much does a garage conversion cost?

An average single garage conversion costs between £4,500 to £8,000 in the UK. The price of converting a double garage typically ranges from £6,000 to £12,000. More complicated builds, such as kitchens and bathrooms, will cost more than a standard room, such as a bedroom.

Garage conversion prices are much cheaper than a traditional home extension, as they benefit from already having foundations, walls, a roof and often electricity in place. As a result, if you are on a tight budget, converting your garage into much needed living space may be the ideal solution.

Below we have compiled a useful table to help you better understand the average price of a garage conversion in the UK.

Job DescriptionCost (average)
Basic Single Garage Conversion (eg. bedroom)£4,500 to £8,000
Advanced Single Garage Conversion (eg. kitchen)£6,000 to £10,000
Basic Double Garage Conversion (eg. bedroom)£6,000 to £12,000
Advanced Double Garage Conversion (eg. kitchen)£7,500 to £15,000
Flat Roof to Pitched Roof Conversion£2,000 to £4,500
3x3m Home Extension (for comparison)£15,000 - £30,000+

Please note: the garage conversion prices above are estimates – for accurate pricing, please use our cost comparison tool.

Garage Conversion UK

Whilst the building costs for a garage conversion are minimal due to the structure already being in place, there are some important details and add-ons that need consideration.

Additional Garage Conversion Costs

Below are a few important garage conversion costs and considerations:

Garage Doors

As part of your garage conversion, you will most likely remove your garage door and replace it with a solid wall, window, door or a combination of these. Depending on the garage door size and method you use, the price will range from £500 to £2,000.


There are a number of flooring options available, including carpet, tiles and lino. For older garage floors, a new base may need to be laid before the installation of carpet to ensure it is even and flat.


For most garage conversion, insulated stud walls will be installed and then covered with plasterboard to provide an energy efficient room. In some cases, especially if you want to maximise space, the walls can be plastered directly.

Doors & Windows

Doors and windows important to provide access and light to enter your converted garage. It is recommended to choose double or triple glazed windows, which will provide a higher level of insulation for your new room.


Whilst most garages will have an electricity supply, some conversions will require additional electrical rewiring, radiators and even phone lines. For kitchen and bathroom conversions, there will also be additional gas, plumbing and drainage required.

Is planning permission required?

In most cases, as long as you don’t plan on changing the structure of your home, planning permission won’t be required. Garage conversions are typically considered permitted developments, as long as the work is internal and does not involve enlarging the building. There are however restrictions to certain buildings, such as those in conservation areas. We recommend checking with your local authority or the Planning Portal website.

Looking for Local Garage Conversion Contractors?

Garage Conversion Ideas

If you are considering converting your garage into usable living space, you may already have a good idea of exactly what you want. However, if you want some inspiration to best maximise your space, we have put together a list of the best garage conversion ideas.

Some of the most popular garage conversion ideas include:

  • Additional Bedroom: Bedrooms are one of the most popular garage conversion ideas. Converting a garage is a great way to add an extra bedroom or two.
  • Split Garage: If you have a double garage, you can convert half into living space, such as a bedroom, whilst still retaining a garage space for your car.
  • Extended Living Room: Many garages are built next to the living room area, and knocking through a wall is a great way to expand your lounge room.
  • Bathroom: If your property doesn’t have a bathroom downstairs (or perhaps needs an additional toilet), you can convert part of your garage.
  • Larger Kitchen: Whilst it may seem unusual, but moving or extending your kitchen into the garage area is one of the cheapest extension options.
  • Home Office: If you run your own business or work from home and need your own space, a converted garage may be the perfect option.

Home Extension Alternatives

As well as converting a garage, there are a number of other ways to extend your home and improve your living space. It is always a good idea to consider these extension options, as they may be a better fit for your home or a more affordable alternative to converting a garage.

Some of the most popular home extensions include:

  • Conservatory or Orangery
  • Loft Conversion
  • Basement Conversion
  • Barn Conversion
  • Garden Room
  • Home Extension

Looking for Local Garage Conversion Contractors?

Money Saving Tips

We love helping UK consumers save more on their home improvements. To ensure you receive the cheapest garage conversion deals, we have put together some helpful tips and tricks.

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Compare Garage Conversion Prices

One of the best ways to ensure you are receiving a great value for money garage conversion build is by comparing prices. With our garage conversion cost estimator, it only takes a moment to fill in your requirements and work out the best deal for you.[/ultimate_icon_list_item][ultimate_icon_list_item icon=”Defaults-check” icon_color=”#81d742″ content_font_size=”desktop:16px;” content_font_color=”#2d2d2d”]

Promo & Discount Codes

Promo codes for garage conversions, really? Yes, you may be surprised that many builders have promo codes and deals that can help you save on the cost of your fitting. We recommend you find local suppliers first, then check to see if they have any discount codes available.[/ultimate_icon_list_item][ultimate_icon_list_item icon=”Defaults-check” icon_color=”#81d742″ content_font_size=”desktop:16px;” content_font_color=”#2d2d2d”]

Ask for a Discount!

Getting a better deal on garage room conversions can be as easy as asking for a better price. This is an extremely easy, fast and simple money saving tip. And, it actually works more often than you might think. The home improvement industry is very competitive, and many suppliers and fitters will be willing to provide a further discount to secure your business.[/ultimate_icon_list_item][ultimate_icon_list_item icon=”Defaults-check” icon_color=”#81d742″ content_font_size=”desktop:16px;” content_font_color=”#2d2d2d”]

Concession Discounts

If you are an OAP, work in certain industries (armed forces, NHS, etc.) or hold another concession, you may be able to receive a discounted rate when converting your garage. Not every supplier will provide discounts, but quite a few smaller construction firms provide discounts to certain concession holders.[/ultimate_icon_list_item][/ultimate_icon_list]

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