How big can I build a shed in my garden?

How Big Can My Shed Be?

Planning permission regulations differ from area to area, so it is always best to check with your local council.

However, here are some of the most common, widely used rules regarding bulding a shed in your garden.


The common rules about shed size:

  • Sheds should be single storey.
  • There should be no platforms, balconies or verandas on sheds.
  • Sheds should be a maximum of three metres high unless they have apex / dual pitched roofs, in which case they can be up to four metres high.
  • It has an occupied volume of no more than 15m squared.
  • If you build a shed within two metres of your property boundary it can only be up to 2.5 metres high.
  • Combined with other extensions and outbuildings, your shed should not cover more than 50 percent of the land around your original house.


Other garden shed rules to bear in mind:

  • Sheds should not be built forward of any walls at the front of your house.
  • A shed should not impinging on conservation areas or spaces of outstanding natural beauty or any other government-protected designated land (such as a world heritage site).

If in doubt, check with your local planning office.


The most popular size sheds:

8x6 is the most popular size shed, with the 6x4 and 7x5 close at it heels. These are sufficient for holding most householder's garden equipment including a lawnmower and the odd bit of garden furniture for over the winter.

Of course, we have a full range of sheds in all size from 3x2 tool store to mighty 20x10 workshop garages. View all wooden, plastic and metal sheds here:

All Sheds


The neighbours:

You may also want to consider your neighbours. Good neighbours are worth a thought. Will the shed be an eyesore for them? Would you be happy if they built a similar shed with a simliar effect on you? Of course, as long as you meet the planning rules then you can build your shed.


Building the Shed:

No matter what size the shed, you must ensure it is built on a reliable, level surface. Poured concrete or concrete slabs are popular. We also offer an eco-friendly, DIY shed base option - our plastic shed bases. These kits include a membrane and squares of strong, durable plastic base which interlock to create a reliable foundation for your shed. If the garden building is larger, you will need to also fill the plastic grid with pea gravel. You can take a look at our plastic shed bases here:

Plastic Bases




To find out how to build your garden shed, take a look at our instructional video below.