No real reason, just the timing between jobs. Bricks delayed by a few wks, frames took 2 to arrive then sat there for another wk before they went up, nearly 2wks between waterproofing and lock up with noone on site. I wouldn't want my home rushed but it sure couldve been finished on time!
you know what they can make it by Christmas if they have tradies onsite regularly. My friend is building the moscato guest (modified to a 4 bed) and is at the same stage as yours, walls have gone in, now they're waiting for the front/garage doors and kitchen to be installed. I keep willing hers to hurry up so she's in by Chrissy...will do the same for yours haha