A home extension can add valuable space and increase your property's value. However, proper planning is essential to ensure your project runs smoothly and meets all regulations.
Do You Need Planning Permission?
Many extensions fall under "permitted development" rights, meaning you don't need planning permission. However, you'll need permission if:
- Your extension exceeds certain size limits
- Your property is in a conservation area
- Your home is a listed building
- Previous extensions have used up your permitted development allowance
Building Regulations
Even if you don't need planning permission, you'll almost certainly need Building Regulations approval. This ensures your extension meets standards for:
- Structural stability
- Fire safety
- Energy efficiency
- Ventilation
- Drainage
Types of Extensions
Single-Storey Extensions: Popular for kitchen and living space expansion. Typically more straightforward and cost-effective.
Two-Storey Extensions: Maximise space by building up. More complex but better value per square metre.
Side Return Extensions: Ideal for terraced and semi-detached properties with narrow side passages.
Wrap-Around Extensions: Combine side and rear extensions for maximum space gain.
Cost Considerations
Extension costs vary widely depending on size, specification, and location. As a rough guide:
- Single-storey extension: £1,500-£2,500 per m²
- Two-storey extension: £1,800-£3,000 per m²
- Side return extension: £1,500-£2,200 per m²
Remember to budget for professional fees (architect, structural engineer), planning fees, and contingency (typically 10-15%).
Timeline
A typical extension project timeline:
- Design and planning: 2-4 months
- Planning permission (if required): 8-13 weeks
- Building Regulations approval: 4-6 weeks
- Construction: 3-6 months depending on size
Design Tips
- Consider how the extension will flow with existing rooms
- Maximise natural light with large windows or roof lights
- Think about heating and insulation from the start
- Plan for adequate storage
- Consider future needs - will your family grow?
Ready to start your extension project? Contact Peak Projects for expert advice and a free consultation. We'll guide you through every step of the process.
Ready to Start Your Project?
At Peak Projects, we pride ourselves on transparency, quality workmanship, and clear communication throughout every project.