When building a smart home, most people start with small devices such as cameras, plugs, and window sensors. Many companies offer customized solutions for new houses, which are usually more expensive than building your own system. However, it all depends on how comfortable you feel with new technology. A more tech-advanced homeowner would want to expand to a fully smart and automated alarm system, add thermostats for heating and cooling, use smart vacuums and moppers, and more.