You can  be  charged  actual damages so ask them for  the actual damages and check  your  local  state  laws. 

Did your clients use a local or national design firm?

Find your local comps and use @Luke Carl 's Enemy Method. 

So those are installed by partners in the local area.I would find out if there is a installer in Austin and get the lay of the land.

California is tricky so make sure you understand if you have both state and local requirements. 

The listing MUST be on the local MLS.There are hundreds of MLSs in the United States.

Most traffic will be on Zillow or MLS.I would try Zillow first, if not enough interest I would do a flat fee MLS listing.FB groups national and local for STR's would be another free place to advertise.

Market Adaptation: What unique strategies have you developed to adapt to your local market's conditions?

I manage & do all of the setups because I'm local. 

Located in the Point Place neighborhod with Washington Local School District in Toledo, OH.