More thoughts:

Look not only at the house you are considering, but the neighboring houses as well. Do they look like they are kept up? Or does it look like the neighbors have a religious opposition to raking up their leaves and cleaning up after their pets. Are the neighboring windows covered with blinds/shutters/drapes, or old sheets & blankets? You can buy the best house in the world at a great price, but crummy and/or absent neighbors will drive you crazy faster than many flaws in your house.

Is there a lot of traffic on the street? Is there a fire station or truck depot around the corner? How close are the nearest railroad tracks?

Also, I think it's worth checking this website before you buy. Especially if you have or plan on having a kid.