Planning Permission and Permitted Development
Many single-storey rear extensions fall under permitted development and do not require planning permission, subject to size limits. Side and double-storey extensions, and those on properties in conservation areas, generally require a full planning application. Your builder should confirm what applies to your specific property before any other decisions are made.
What to Expect During the Build
A building extension involves groundwork and foundations, structural walls and roof, windows and external doors, insulation to current standards, and internal fit-out including electrical, plumbing if required, and plastering. A well-managed project will have a clear programme of works and a lead contractor who coordinates all trades on your behalf.
Salisbury is a cathedral city in Wiltshire, home to Salisbury Cathedral which contains the best-preserved of the four surviving original copies of Magna Carta. The cathedral's spire is the tallest in the UK. Salisbury is close to Stonehenge, one of the most famous prehistoric monuments in the world. The city has a well-preserved medieval centre with a traditional market that has been held since 1219.
Building Regulations and Structural Calculations
All extensions require Building Regulations approval regardless of whether planning permission is needed. Structural calculations by an engineer will be required for any load-bearing work. Your builder should manage the Building Regulations application and arrange inspections at the required stages of construction.