Uhhh no, the city will not pay the cost to upgrade "Privately Owned Buildings" and take a lien on the building. Illegal act. 

Associations have the ability to take out a loan using their buildings as collateral. 

Association can spread the loan out over 10 years or more, add a small increase to the monthly maintenance fee. Making it easier for repayment.

Association can also allow those who can pay their fair share up front in cash, saving them money by not paying interest.