When building houses, there typically aren't a whole lot of actual engineers involved... electrical wiring is typically done by electricians, who, while trained and skilled at electrical work, are not degree-carrying engineers... I don't believe civil engineers involve themselves with home design either... typically that's done by architects; i'm not sure, but i don't think architects have engineering degrees either. And as for telecom setup in a house... That sort of thing would be handled by the electricians, and probably the power and phone companies.
This all changes when talking about big commercial buildings, I'm sure, but as far as HOME construction goes, I don't believe there are very many actual engineers involved...