Practical guidance to help you understand the main approvals and design issues.
Planning permission
The planning route depends on the project type, property, location and proposed use. Some extensions and outbuildings may be permitted development, while annexes and projects in designated areas often require closer assessment. We can review the proposal and prepare an application where needed.
Building Regulations
Building Regulations commonly address structure, fire safety, ventilation, sanitation, drainage, energy efficiency, electrical safety, access and protection from moisture. The applicable requirements vary with use and project scope.
Foundations and ground conditions
SIP structures still require correctly designed support. Foundation choice may include concrete strips, rafts, pads, ground screws or engineered alternatives depending on soil, trees, drainage, loading and site access.
Energy, moisture and ventilation
A high-performance envelope should be matched with controlled ventilation, suitable vapour control, weathertight external layers and careful junction details. Annexes may also require formal energy calculations.
Party walls, drainage and services
Extensions may involve the Party Wall etc. Act, build-over requirements, sewer records and service diversions. These matters should be investigated before work starts.
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Ready to create your room beyond?
Send us your ideas, drawings or site details for an initial project review.