It depends on the type of construction the home is built based upon. For example if it’s a concrete foundation, then wiring can’t be added by crawling under the house. If it’s a two story, then access to the ceiling cavity is difficult as there isn’t an attic over that bottom floor.
However, assuming a single story dwelling, with ample and easy attic access, the man hours it would take to completely prep the drops, pull conductors, and box them out, would be approximately 6 labor unit hours.