I need to know if anyone died at my house

Check your local newspapers using your library's resources.

Local library is a good idea, they usually keep old papers on microfilm. You can also search online, by searching for news articles by typing the address or local area then doing a search in the "archives" and placing dates. Old obituaries are another search you might try, by looking for old archived newspapers as well as those online. There are a myriad of resources online, once you start googling.. and good luck!

May I ask what you are concerned with this? Is something odd going on there?