Just because you got a good deal on rent at the beginning doesn't mean you're in the clear. Landlords increase rent all the time, and if you aren't prepared, you'll end up paying more next year than you did this year. Luckily, it may be avoidable. First, make sure it's even legal for them to do so, and see if you can negotiate them down (much like you did with the initial rent). This form letter may help you out, too.