No two extension projects are the same, and the timelines can differ dramatically depending on the size and complexity of the project. However, we have created an example timeline to give you a rough idea of the key milestones in a typical extension project, the order these are likely to happen in, and an approximation of when they might take place.
Your builder will be able to provide a specific timeline for your project which will help highlight key periods where major decisions have to be made on your part, or when disruption to your daily routine is likely to take place!
*Expect a two storey extension to take between three and five weeks longer due to extra floor structure, additional wall construction and extra works relating to plastering, plumbing, electrics and decoration etc.
Key milstones and timings