we have 5 condo buildings. each with 6 units.1 building needs siding.can i do special assessment to cover just that building and bill only 6 condo own

The answer to this depends on what your declaration of condominium says about ownership and maintenance responsibilities for common elements. Typically maintenance and repair of any of the common elements are the responsibility of all of the unit owners, and not just a select few. Therefore all of the unit owners typically must pay assessments even if a maintenance work or item only affects building that houses part of the owners. This is similar to roof repairs as well. If the condominium was developed in phases or even sections it is possible that the declaration could provide for special assessments against  the unit owners in the specific phase or section. If you wish to follow up and ask more specific questions and provide more details and specifics, we can forward to you the necessary documentation to engage our services.  However, until that occurs, we cannot offer you legal advice. This is specific to Florida law and does not constitute legal advice as the facts presented are anonymous and incomplete. This is intended for general education only and does not create an attorney-client relationship. This should not be relied on and you must seek your own attorney client relationship.