How do I take good, well lit photos of a property in low light?

[James Dean-Howell]

My phone isn't cutting it. I toured a home with a seller yesterday and tried to take some pictures but the lighting was too bad. There was no electricity in the home so I couldn't get lighting in the rooms. The basement was pitch black. So was the attic. 

Is there a good standard wide lense camera that I can buy to help me with this? How do I get proper lighting on a pitch black room to take a good picture? A lot of my opportunites to take photos are at night so I need something to help me take clear, well lit pictures even in those conditions. My budget is maybe 100 dollars, hopefully less. I don't really need many bells and whistles on the camera. Just a wide lense and the ability to take good pictures in low light.

Also should I buy flashlights or something for lighting? How do other take pictures of a pitch black basement?