Upgrading Power Service In New Home Build

Getting ready to move on a new build which has 200 amp service vice 400 amp service that we currently have. The current house has 4 dedicated 20 amp circuits in the media room. I asked the builder to add the same amount in the new house,,but we have to wait to get approval from the electrical section, and home builder. So, thinking that a negative decision will come back, do I just need to contact the power company for a service increase, say 100 amps or so, and deal with the power company directly after the build so that I can get the service, then ask an electrician to add the dedicated circuits and wiring to new outlets in the media room? Seems like a lot of work if the builder can't accommodate me. 

Anyone have experience adding service upgrades to their new or older homes, and how did you add the extra circuits to your listening or media room? FYI, northern Virginia, dominion power will be the power service provider. Thanks in advance.

Audioquest4life