It has me a bit worried too. We added a lot of lights and power points to our electrical plan. I had just assumed that the necessary additional circuits would be an integral part of the total load calculations when they costed the electrical upgrade. Looking at the tender though, it details all the extra lights/points etc but makes no mention of additional circuits. Never picked up on that before.
Surely any self-respecting builder/sparky would be aware of any additional circuits needed? Surely?!?