We've been through the make-offer-have-it-accepted etc. The vendor is a professional property developer. No chain as we're in rented and he doesn't live in the property we're buying. No estate agents involved.
The house is now complete (he finished it to our specs - colour carpets etc) and we want to move in ASAP (I'm 6.5 months PG) and he wants to complete to get paid of course.
The hold-up is that he needs to get the electrics and everything checked over by the relevant bodies to sign off the work he's done. He's said that they said they could do it on Oct 2nd. 
He will call them again on Monday and tell them it's an emergency and they need to come sooner.
Anyone had any experience of this sort of thing? How long does it usually take? We can't exchange contracts until we have all these things signed off, or at least, I'm assuming it would be irresponsible if we did, despite the fact that we know the developer.
Grateful for any advice/suggestions/walls to bang my head against. Thanks.