The specification is the detailed written description of the materials, components and systems to be used for your project. It also includes details of the expected quality, standards to be followed, required performance, workmanship and the method for how the work should be completed. It is used by your contractor during construction but also before construction as a key part of costing the works. While your architect will prepare the specification and take responsibility for it being accurate, it can be helpful as a client to understand the factors being considered, in order that you can communicate your aspirations, expectations and priorities.

Adding an extension is a cost-effective way to improve your current home by adding space or making changes to the layout. It avoids the hassle of finding and moving to another home while giving you the familiarity and comfort of staying where you are. It gives the opportunity to design and build something tailored to you while also adding value to your current property. How can you budget for the cost of building an extension to your home?