ooisuankim wrote:
In addition thereto, does the word "necessary" function as a bossy verb that takes only the command subjunctive?
What about the fact that condominium association is singular?
Command subjunctive is indeed the reason.
Within the "command" part of such a sentence, subject-verb agreement rules don't apply. To say "the condominium association complies with xxxx" would be correct if this were a stand-alone sentence, describing something that is true! But in the sentence given, the condo association may or may not be complying with the rules, and the idea of the association complying is purely theoretical. Command subjunctive deliberately forms the verb differently, to show that the action isn't necessarily happening.
For the command subjunctive, we use the infinitive minus the "to": comply.