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How Much Does an Extension Cost

How Much Does an Extension Cost

When you move into a new house, your happiness sometimes has no limit sometimes. However, you may become cramped in your home over time. If you really like the place and do not plan to move then you should think about an extension as an option. We’d like to tell you more about how much a house extension costs and how to plan your expenses.

Costs for Different Types of Home Extension

  • Single-Storey Extension

The cost of this kind of extension depends on the complexity of the design, price and quality of materials and the scale of expansion. According to contractors, such projects cost about £1000-1500 per m2. So if you’re looking for an 80m2 extension, you’ll need a minimum of £130,000.

  • Two-Storey Extension

A two-storey extension project will cost 50% more than a one-storey extension of the same space. So, at the price of £1600 per m2 for a single-storey extension add £800 and get the approximate price. However, it may be bigger if you want to create something exclusive.

  • Loft Conversion

The major works that are carried out while renovating a loft include hydro and thermal insulation, flooring and wall decoration. The approximate price for working with a loft ranges from £1200 to £2000 per m2.

  • Building a Conservatory

Creating a conservatory with a glass roof, tall windows and a canopy can cost about £4,000 for a basic project, or £24,000 for something more exquisite. It all depends on your needs and vision. Consult with your cpntractor to ensure that they provide you with the most accurate quote.

  • Basement Conversion

Changes in the basement are among the most expensive. If the excavation is necessary, you will have to pay from £200,000 to £400,000 totally – of course, depending on the design, materials and size of the area. At the same time, you should entrust such an extension to the most reliable contractors to avoid mistakes that may be fatal for the building.

  • Garage converion

If you decided to expand the living space at the expense of the garage, it may be quite reasonable and affordable solution. To turn it into a comfortable corner, you will need only high-quality design and decoration. The average prices range from £6,000 to £16,000.

As mentioned earlier, all these house extension cost examples are approximate and averaged. To find out the exact amount, contact the contractor. After evaluating the project and making calculations, you can confidently plan your budget.

Costs to Consider

Regardless of the design and type of extension, there are mandatory costs that you will not be able to avoid. They include:

  • Heating
  • Piping and gas extension
  • Material cost
  • Planning and building cost

We also recommend that you plan your budget with a 10% margin on unexpected expenses that occur very often. Contact our experts and get a detailed free quote for any of your extension project.


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