Decide which method you are going to use. Having quality turf laid by professionals is expensive, but you get an instant lawn. However, you need to make sure that the turf is in fact quality turf and this may not be easy to recognise.

Having the turf delivered and laying it yourself, is cheaper but back breaking. Seed is cheap, but it will be a while before you can walk on the newly prepared lawn and you will inevitably have little dips and hollows in it, but that is easily sorted. Take into account birds love grass seed!