Pretty much what Sararose said plus being honest. If something isn't ready (ie: amendment to plans) let us know prior to going to the office to sign the variations then get there and nothing be done, not give us some half a**ed excuse. Our builder was horrible in the end to deal with and it turned me off building again.

Plus if you have a display home, walking through with the client and explaining what is included and if it isn't what the alternative is. It is hard to imagine what something will look like on a larger scale without actually properly seeing it ITMS?