We are planning on building a timberframe house through one of the larger companies using one of their existing house plans. As far as I am aware this means we will not have an architect. Some of the banks I have talked to (we have not applied for pp or a mortgage, we're still finding out) require an architect to sign off a different stages of the build for us to draw down the next payment of the mortgage. What happens in a case like ours where there may not be an architect?