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Beginners guide to extensions

Adding an extension to your property is a very popular way to add space.

What are you thinking? Kitchen extension, single story, double story? Either way you need your extension to add the space you need and to increase the value of your home.

What do you need to consider?

    Your neighbours

If your extension runs close of to the boundary of yours and your neighbour’s property, you will need to comply with the party wall act.

Before building commences you will need to have a written party wall agreement


If you require drawings or advice for your extension, you will need to make sure they are done by a registered architect.

Choosing the right architect is very important.

Site access

You will need to factor in site access for trades and deliveries. Make sure there is easy access to the area and space for materials (driveway/garden)


Before work commences you need to make sure that your boiler can cope with the demand of the extension.


Importantly you need to inform your insurance company before work begins. Some company’s may not provide cover or reduce the cover during the build.

Will I need planning permission?

Your local planning authority is responsible for deciding whether your extension can go ahead with or without planning permission. Please note this can vary from district to district.

You can check https://www.gov.uk/planning-permission-england-wales/when-you-dont-need-it

Building regulations

Whether to require planning permission on not you will need to comply with building regulations.

To meet with regulations, you can submit a full plan or a building notice to your local authority

You can check https://www.gov.uk/building-regulations-approval/how-to-apply

Ground tests

Make sure you research the ground in your area. This could be significant to the build.