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Home » Annex » Wooden extension costs

Wooden extension costs

Minimal costs

€ 1.000

Average costs

€ 13.000

This project costs on average between

€ 10.660 - € 15.340

Maximum costs

€ 25.000

Is it high time to install an extension, but do you want something different from others, an authentic extension? Then consider a wooden extension. A wooden extension with a strong wood species ensures little or no maintenance and adds character to your home. Would you like to know more about a wooden extension and find out the prices for your situation? Read on quickly.

Costs wooden extension

Before having a wooden extension built, it is important to know whether it fits your budget. The prices of a wooden extension are lower than those of a brick extension. This is because the foundation and superstructure are very light. Of course, you can make it as expensive as you want with the finishes. Below is a price indication of the various finishes and prices for a wooden extension (5 metres wide x 3 metres deep).

Style wooden extension Prefab (ready-made) Made-to-measure
Standard £ 16.000 – £20,000 £19,000 – £23,000
Classical/Modern £18,000 – £22,000 £21,000 – £25.000

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Timber construction costs

Price examples

The price table mentioned earlier shows you an overview of average prices. Below are examples that explain the prices further.

Most chosen work

The most chosen work is when a wooden extension of 5 by 3 metres is installed. The long side joins the rear facade in this case. The cost including the foundation, flat roof and skylights is on average between £16,000 and £18,000.

Bigger project

A larger project is when you have a complete extension built where you can put your car, for example. For a complete wooden extension of 6 metres wide and 2.5 metres deep, including floor foundations, construction, sliding doors, pile driving, excavation and making the roof, you arrive at an average price of £23,000.

Detailed project

A detailed project is when you want to install a wooden canopy. For a size of 2 by 2.50 metres with mounting, you arrive at an average price of £1,300.

How does the price breakdown of a wooden extension look like?

Cost breakdown Wooden extension costs

What choices affect the price?

With a wooden extension, the price is determined by 4 choices.

Choice 1: Prices for the width and depth of a wooden extension

When you have a wooden extension built, the dimensions are very important. By paying attention to the dimensions, it is possible to factor in the overall cost. For example, prices in depth are higher than prices in width. Prices in depth are approximately £1,250 per half metre and for the width you arrive at an average price of £1,000.

Choice 2: Prefabricated or customised kitchen extension?

Another choice is to opt for a prefabricated or customised extension. A prefabricated extension means the extension is made in the factory and later installed on site. This ensures little mess in and around your home and the extension is up within a few days. A prefabricated extension has fixed dimensions, but dimensions that are common. A custom-made extension costs more time and money. Your wishes are incorporated into the extension and built on site. In this case you will be about £2,000 more expensive than with a prefabricated extension.

Choice 3: Additional option

See additional options you have and the additional prices here.

Option Average additional price
Facing £3,000
Plastering £1,000
Electricity £450
Central heating (incl. radiator) £ 1,000
Framing £ 300
An additional window £ 1,000
Sliding door £ 1.000

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