Garden rooms and annexes in Glasgow are both popular options for adding extra space to your property, but they serve different purposes and have distinct features. Here’s a detailed comparison:
Find out: How much does an annex cost in Glasgow?
- Purpose and Usage:
- Garden Room: A garden room is designed as an additional space for various activities, such as a home office, gym, studio, or relaxation area. It enhances the use of the garden and offers a comfortable environment but is not intended for permanent living.
- Annex: An annex is a self-contained living space designed to function as a separate home. It is often used for family members, guests, or as rental accommodation. Annexes include essential living facilities such as a kitchen, bathroom, and sleeping areas.
- Insulation and Heating:
- Garden Room: Garden rooms can be insulated and fitted with heating for year-round use, though they do not usually require the same level of insulation as annexes. The focus is on providing comfort for occasional or daily activities rather than full-time living.
- Annex: Annexes need full insulation, heating, and ventilation systems to make them suitable for permanent occupancy. This includes quality thermal insulation, efficient windows, and proper heating to maintain comfort in all seasons.
- Building Regulations:
- Garden Room: Typically falling under permitted development rights, garden rooms often do not need planning permission if they meet certain size and location rules. However, they must still adhere to basic safety standards.
- Annex: Annexes generally require planning permission, as they are considered separate dwellings. They must comply with building regulations covering areas such as structure, fire safety, insulation, plumbing, and electrics.
- Amenities and Utilities:
- Garden Room: Most garden rooms have electricity and heating but do not usually include full plumbing. They are intended for occasional use and do not need the facilities of a home.
- Annex: Annexes offer complete living facilities, including a kitchen, bathroom, and bedrooms. They need full plumbing, heating, and electrical systems to support day-to-day living.
- Cost:
- Garden Room: Building a garden room is generally more affordable than an annex. Costs are lower because they require fewer utilities, less insulation, and fewer regulatory requirements.
- Annex: Annexes are a more expensive investment due to the need for extensive utilities, higher insulation standards, and full compliance with building regulations. However, they add significant value and usability to a property.


