perfect.. rentals are perfect..

not a basement
just a crawl space..
most houses have them..and there is lots of cool air under the house.. plus, You can take the air condition ducting from (lets say) the kitchen and run it to the room you are growing in. Cut a hole in the floor of the closet...(easy to patch later) and bring in cool air.. just disconnect the ducting from the vent in the kitchen (this is under the house) and move it.. it is easy..

you can also set a small fantek fan up that pulls air from the bottom of your house and pumps it into your room..

: )