It sounds like your objective is to not be responsible for any special assessments while you are renting. Since there is no way to guarantee that a condo association does not impose special assessments during your lease, you may want to negotiate the terms of the lease to exclude yourself from being responsible for any additional fees during your lease. To be sure what you are responsible for, have an attorney review the lease prior to signing.
The last few transactions I have dealt with in that area, there have not been any special assessments, but those are things that can occur at any time based upon a vote of the condo board. That is also something that would have to be disclosed as part of the contract via the listing agent. Most of the townhomes there are NOT condos, but some are. If you would like more information, please let me know, and have a great day!