I told them everything was in storage and they could authorize someone to pay and pick up but they would have to pay unpaid rent, utilities, cleaning, repairs, moving, and storage costs. 

I happen to be one of the co-authors and an experienced private lender. 

Check the contract what they are or are not authorized to do. 

But I strongly feel I don't owe this because I didn't authorize the work.

It could also be legit, but without a solid guarantee (or a major, known, verifiable corporation that provides you with a resolution authorizing the rental), the corp could file bankruptcy, and you have zero recourse, AND a hard time serving someone to evict.

Homestead exemption currently claimed with County tax authorities (Hillsborough County, Florida).  

There are free resources, check for a local chapter of Community Association Institute; and usually the state law will authorize reimbursement to directors for cost of related classes/seminars which might be available through the Real Estate Board, or sponsored by some vendors.4) The Board is also responsible to properly plan for HOA finances...they should have a 20 to 30 year "reserve funding" plan that spells out the financial needs for routine replacement or major repair projects for EVERY element of the common and limited common areas.

My line of thinking is, the contractor is acting as my authorized agent therefore allowed to have the key.I'm sure this question is state-specific, but any insight would be appreciated!

The information I do find is vague and is asking for an inspection by Spokane Housing Authority and maybe requires a business license?

Because of this, homeowner can sell At some point, if homeowner doesn't work something out with the lender, i.e. loan modification or pay off the outstanding loan balance in full, lender will ask the court ("file a motion") for authorization to put the property on the auction block.