In most cases, building a garden annexe in Glasgow will require planning permission due to its intended use as a separate living space. Here are the key factors to consider regarding planning permission for a garden annexe:
- Intended Use: The main reason planning permission may be required is the intended use of the annexe. If it is designed to serve as a separate living space, complete with facilities such as a kitchen, bathroom, and sleeping area, it will generally need full planning permission. This is because it is classed as a new residential unit.
- Permitted Development Rights: Some garden structures may fall under permitted development rights, meaning planning permission is not required if they meet specific criteria. However, these rights usually apply to buildings used for purposes linked to the main house, such as offices or gyms. A garden annexe designed for living typically falls outside these allowances.
- Size and Location:
- The annexe must not cover more than 50% of the land surrounding the original house.
- It should be single-storey, with a maximum eaves height of 2.5 metres and an overall height of 4 metres for a dual-pitched roof, or 3 metres for other roof styles.
- The annexe should be positioned behind the main (principal) elevation of the house.
- Building Regulations: Regardless of planning permission, garden annexes must meet building regulations. These cover key safety and comfort requirements including structure, fire protection, insulation, plumbing, and electrics. Compliance is essential to ensure safe and comfortable living conditions.
- Conservation Areas and Listed Buildings: If your property is in a conservation area or is listed, stricter controls apply. In these situations, planning permission is often required, regardless of the annexe’s size or intended use.
- Consult Local Council: Contact Glasgow Council’s planning department to confirm whether your project requires planning permission. They can provide advice specific to your property and plans.
- Professional Advice: Working with a builder or architect who understands local planning rules helps ensure full compliance and reduces risk of issues later on.
- Neighbour Considerations: Informing your neighbours about the annexe plans, especially if near their boundary, can help avoid disputes and maintain good relations.
- Prepare Detailed Plans: Develop detailed architectural drawings showing the design, size, and internal layout of the annexe.
- Submit Application: Send the planning application to the local council along with supporting documents and the relevant fees.
- Wait for Approval: The council will assess the application, which may include a site visit and input from neighbours or other interested parties.
- Compliance with Conditions: If approved, ensure the build complies with any specific conditions set by the council.