My way of looking at is 'What is $2 K when you are dealing with prices that are over $100 K?'. I say go with what you have put in and if this one bloke doesn't like it it's his problem. I mean if he is one of 3 people his cut would only be what, $666 there abouts (not much to get worked up over. It sounds a bit dodge to me, go with your gut instinct I say. Just make sure all structures are built to code and they have the paper work to prove. We once got jibbed with a veranda that wasn't to code and the fine was HUGE!!!!!