Declawing is kind of a "hot button" for most TCS members. The short answer is yes, it would be mean to get them declawed.
TCS is an anti-declaw site, because it is actually cruel to the cats. It's not like removing a human finger-nail (though that would be bad enough!). Cats claws, as I'm sure you know, retract. This means they are attached to a tendon, so "declawing" is really an incorrect way of putting what happens. The entire end of the toe from the last joint must be amputated.
It is illegal in 23 countries around the world. Several cities in California and Norfolk, Virginia have made it illegal to "declaw" cats.
There are so many things that can go wrong as well. If not done properly, the claws regrow, and that can be intensely painful. Some cats will stop using their litter boxes when declawed because of sensitivity in their foot. Some cats will start biting as a result, because they no longer have their natural defense.
Cats actually walk on their toes. So imagine that you don't use your whole foot to walk, you walk on your toes - and you have to have all your toes amputated from the last joint. You'd walk funny. This happens to cats, and many develop arthritis as a result of the funny posture it creates.
I'm so sorry you had to move into a building that requires cats to be declawed. Maybe you could work on educating the management about the problems of decalwing - and simply have them require an extra pet deposit for people with cats? I assume they don't require dogs to be declawed??? Dogs claws aren't retractable, so if they allow dogs but not cats with their claws, there's a good starting point for making your case.
...but please do not declaw your cats. Maybe keep looking for another place to live?
Here is an informative thread if you'd like to learn more or have information to take to the building if you want to work on getting them to change the policy (actual data and articles published in scientific journals about it are on page 3 of this thread):
http://www.thecatsite.com/forums/sho....php?p=2472311