Initial expenses related to home security systems include installation, equipment, and additional functions, in addition to ongoing costs, such as monthly monitoring and maintenance. Many homebuyers who are about to spend their life savings on a new home will see the existence of a modern security system as an added advantage, knowing that they won't have to scrape together the extra money to install one and protect their new investment, and they may pay more for a home that's already protected. If you only need home security for a short period of time, consider providers that offer month-to-month services, but keep in mind that you may have to spend more on initial equipment costs.