Shared walls
You may need a Party Wall Agreement with your neighbour or if you’re building over drains a Build Over Agreement
Site access
How deliveries and waste will come and go
Ground conditions
Will determine the size and type and cost of foundations
Services
Whether you existing electrical plumbing or gas system can be extended
Trees
How close these are may influence the size and type of foundation and perhaps planning application
The list goes on and will depend on your particular circumstances. Rest assured that we will check everything to make sure that you get no nasty surprises