How much do house extensions cost?

There are several choices you have to make if you are considering building an extension. These choices all affect the total price.

The look or style.
As you can see in the table above, the appearance or architectural style influences your extension's total price. And, of course, you want a kind that matches your existing home. A distinction is often made between modern or classic and standard. The standard model is the cheapest and can be found in most common house styles. If you have a villa in the countryside, a classic style might be better suited, and if you want something unique, you can go for a modern style, for example with many windows.

Custom-made or prefabricated.
Custom extensions are more expensive and take longer to set up. That is because they are made to your specific dimensions and wishes. That gives you control over exactly what your extension will look like, but you have to pay more money. Prefab extensions are already made in the factory and only need to be installed. That can usually be done in a day. That is the cheaper option; solely, you depend on the designs and dimensions of the factory.

The dimensions of the extension.
Of course, a more massive extension is more expensive than a smaller one. That requires more materials and also more person-hours. You often pay an extension per square meter, which gives you an exact price from the start and gives the installation company certainty about the number of materials used.

The age of your home.
Sometimes the year of construction of your house influences the price of an extension. More suitable and standard extensions are often available for newer houses. If you have an older home, it may seem strange if you add a traditional extension. Besides, older houses' walls are not always straight, and you can have problems with a good connection.

The connection.
According to the insulation standards in Flanders, every house and extension in Flanders must meet certain conditions. For this reason, a detached extension (for example, a garage) is cheaper. Due to the connection between the two rooms, additional materials and person-hours may be required to meet these insulation conditions.

The materials.
The materials of the doors and windows can influence the price of an extension. You can choose between plastics, wooden, or aluminium frames. And the more windows you have installed, the more expensive it becomes. Doors are usually included in the price, but you will also have to pay more if you want a sliding door.

The foundation.
The foundation of the extension and the structure's weight all affect the type of foundation you will need for your extension. If you need piles, you will lose more money than if you can use simple floor slabs.

Other options.
This way, you can install the extension as expensive and cheap as possible. Many factors influence the total price, some of which you cannot control yourself. There are other extra options that you can choose that make the extension more expensive. Think of installing electricity, cavity wall insulation, PVCwindows,  painter,  insulation, solar panels, central heating, or a skylight.

Whether you opt for a large or small extension, you always create more space in your home by having it installed. However, if you still want to have more living rooms, an extension with an extra floor to build a spare bedroom is perfect.

When building a double extension or also a roof structure, the foundation must be weighted with piles. The entire construction will, of course, be a lot heavier because it consists of 2 floors. Of course, you do not want your new extension to sag over time.

Most duplicates are placed with the following parts of both a new-build house and an existing house:

●    Bathroom
●    The rear of the house
●    On the flat roof
●    Garage

An extension to the garage is also one of the most popular variants nowadays. The result shows that you will not be bothered by the renovation, and at the last minute, the extension will be broken through to the house to have a walk-through.

The most common sizes of a double extension are 3 x 5 or 3 x 6, between 15 m2 and 18 m2 of floor space.

Of course, building or renovating a house with extra living space m2 is not wrong!Of course, this renovation also comes with a price tag. The cost calculation of an average extension can vary. We will give you a reasonable price indication with different sizes of a wing here:

As you can see, prices vary a lot. The larger the extension, the more expensive the general cost will be. What precisely an extension will cost also depends on the following questions:

●    How many meters can be added?
●    How many floors do we want?
●    How many windows and doors will there be in the extension?
●    What type of roof will be put on?

The average cost of a 3-meter-wide extension is between 10k and 13kpounds.

If you want a more considerable extension of 5 meters in width, you should think of £15000 to £18000pounds. Depending on the finish, you can also choose to finish the inside of the attached part yourself to reduce costs in this way.

Will the new kitchen or a modern bathroom be built in the extension? The answers to these questions partly determine: "What does an extension cost?".