Planning Electrical Outlets in Your New Home or Renovation Plan for the Future. Make sure your electrician provides you with an electrical service box that has at least six empty locations for future expansion. While you’re in the planning stages for your new home, have the electrician run empty conduits into the attic from the service box. 10 Electrical and Lighting Things to Consider When Building That’s why it took three hours of careful deliberation before finalising our electrical and lighting plan! Thankfully our electrician and lighting expert were incredibly patient and helpful! Here are my top 10 electrical and lighting things to consider when building and I hope they help you with your build. 1. Do not over-light your interiors.