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Our own finished building work on an earlier job
Extensions

Extensions in Lowestoft

GC Building and Landscaping is based in Lowestoft, and we build house extensions across the town. If you are weighing up extensions in Lowestoft, the sensible place to begin is the house itself: how it is laid out now, how much room you want to add and how the new part will link to the existing rooms.
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Homes in Lowestoft

Lowestoft lies on the Suffolk coast, and no town in the UK sits further east. Many of its homes are Victorian terraces. If you own a terrace and want more space at the back, it helps to know that a lot of single-storey extensions at the rear are covered by permitted development rights, so long as they keep within set sizes, which can remove the need for a full planning application. Properties by the sea have to cope with salt in the air and weather off the coast, so if you are planning extensions in Lowestoft near the seafront, tell us how close to the shore the house is when you get in touch.

“Both Cody and Mark worked extremely hard. Excellant communications,very reliable. No hesitation in recommending them, and will use again for further work. Nothing to much trouble for them. A gem of a find.”

Richard
Google review · October 2026

What matters for extensions in Lowestoft

When we take on extensions in Lowestoft, each job is shaped around the property: its current layout, the space you are after and how the extension will join the rooms you already use. Before any building starts, it pays to settle whether your plans come under permitted development or need a planning application. Either way, the finished extension has to satisfy the Building Regulations, and building control checks the work.

  • We look at your house with you and talk through where the new room will go and how it will tie in with what is already there.
  • The planning position gets settled early: permitted development for many single-storey rear extensions, or a planning application if the design falls outside the size limits.
  • The foundations, structure, insulation and drainage all have to meet the Building Regulations.
  • Building control checks the work against those standards.

Questions about extensions in Lowestoft

Do I need planning permission to extend the back of my terrace?

Not always. Permitted development rights let plenty of single-storey rear extensions go ahead without a full application, as long as they stay under the size limits. Those rights are narrower in a conservation area, and a listed house needs listed building consent before work goes ahead.

What should I send you to get a quote?

Send the address and a few lines on what you would like to build, such as the room you want to add and where it would sit. Ring us, use WhatsApp or fill in the enquiry form.

Details that help

  • The property address
  • Drawings or plans, if you have them
  • Whether planning permission has been applied for

Add up to 5 photos of the job.