What you need to know

Height of Garden Studio with permitted development is 2.5m

Planning Permission is rarely required, but here's the rules;

In many cases a garden studio can be built without planning permission but under what is called Permitted Development Rules. These rules state the sizes and positioning of different shaped buildings which can be built without the need for full Planning Permission and they are clearly laid out on the Planning Portal website. 

The Permitted development rules are as follows:

You can’t build a garden studio in the front of your house under Permitted Development. This means that if you want to build a garden studio in the front garden of your house you will need to apply for Planning Permission.

1) The garden studio must be single storey. 

2) This rule is also telling us that dual pitched roof garden rooms should be no higher than 2.5 meters at the eaves and no taller than 4 meters at the ridge. garden studios with this shape roof need to be built more than 2 meters away from each boundary. 

3) Single sloped roof garden studios, can be no taller than 2.5 meters at the eaves and 3 meters at the ridge to comply with Permitted Development rules. They should also be sited more than 2 meters from each of your gardens boundaries. 

If you want to place your garden studio within 2 meters of any boundary, i.e. your fence, wall or hedge, it can be no taller than 2.5 meters high. In most cases this dictates a flat roof garden studio. 

This rule is saying that you can’t add a veranda, deck or balcony to your garden studio. under Permitted Development. However, the page for Permitted Development rules for decks says they can be built under Permitted Development as long as they are no higher than 300mm (1ft) and when combined with other structures don’t cover more than 50% of your garden. 

The term “original house” means the house as it was first built or as it stood on 1 July 1948 (if it was built before that date). Although you may not have built an extension to the house, a previous owner may have done so. You may already have additions to your house like conservatories and sheds, greenhouses and decking. These buildings combined with the garden room should not cover more than 50% of your garden. 

Planning Department are very helpful, and we would advise having a chat with your local office before you decide on a garden studio to check your individual position in regards to Planning Permissions.