A garden room with a purpose of its own.

Start with how you will use your garden room

A home office needs space for a desk, screen and video calls. An art studio may prioritise natural light and storage. A hobby room or exercise space may need different floor performance, clearances and ventilation. Describe the activities and equipment before settling on external dimensions.

Consider who will use the room and when. A space used for a few hours on weekends is a different brief from a workplace occupied throughout the week. If you plan to receive customers, employ staff or use the room for a business, make that clear early so the implications can be checked.

Plan the position, outlook and privacy

Measure the available area and note boundaries, trees, drains, paths and existing structures. Think about the route from the house during wet weather and whether doors can open comfortably. The orientation of glazing affects daylight, privacy and exposure to the sun.

A large window can make a small room feel connected to the garden, but more glass is not always better. Discuss shading, glare on computer screens and views from neighbouring properties. Leave a practical way to access external surfaces for inspection and maintenance.

Discuss insulation, heating and fresh air together

For year-round use, ask about the construction of the floor, walls and roof as well as the doors and windows. A heating appliance alone does not define the comfort of the room. Heat loss, unwanted draughts and ventilation need to be considered as part of the whole design.

Include summer use in the conversation. Solar gain through glazing, equipment and the number of occupants can influence internal conditions. Ask how fresh air is provided and whether the proposed specification is appropriate for your activity. Do not rely on a general all-season label without supporting details.

Foundations, electrics and the route into your garden

The proposed structure and ground conditions determine what support is appropriate. Existing paving, a lawn or a previous shed base should not be assumed suitable. Clarify who assesses the site and who is responsible for preparing the base.

Delivery access can be a deciding factor. Measure gates and side passages and explain changes in level or overhead obstructions. For electrical supply or data connections, discuss the route from the house and the scope of qualified contractor work. These items should appear in the quotation or its exclusions.

Garden room planning permission in England

Some outbuildings used incidentally to a house can fall within permitted development, but this depends on all the relevant conditions and any local restrictions. Separate self-contained living accommodation is not covered by those outbuilding rules. A garden room should never be sold on a blanket promise that planning permission is unnecessary.

Check the intended use, proposed size, height and location with your local planning authority. Listed properties, designated areas and restrictions affecting your property may change the position. Planning and building regulations are separate, and guidance for England should not be treated as the rule for every UK nation.

Build a realistic garden room budget

Compare the complete project rather than only the shell. Insulation, glazing, internal finish, heating, electrics, foundations and access arrangements can change the overall cost. Decking, landscaping and decoration may also sit outside the building quotation.

For an initial RDB enquiry, send your postcode, approximate dimensions, intended use and photographs of the garden and access route. Explain the finish you prefer and your budget in pounds. A clear brief helps identify the questions that need answering before a specification is agreed.

GARDEN ROOMS QUESTIONS

Frequently asked questions