If you live in an older home, you might be wondering how you can trace the history of your house. Before hiring a professional service to track down information, first consult available web content. There are plenty of online historical and architectural resources available to anyone with an Internet connection. When a particular historical database requires a paid subscription, be sure to check with your local library before paying a fee. In many cases, libraries buy group subscriptions that allow cardholders to use these services for free.