My boss who is not a designer, is the proprietor of the shop were I work. He rendered services accumulating over 20 billable hours, plus travel time back and forth from Market. He has sent over a bill to clients for said services. The clients refused to pay because they never signed any contract and ultimately did not purchase from us. My boss entered into this project with good faith that they would purchase from us as it was implied verbally by client. He has measurements and images from the space and timed sessions describing activity. Can we in the state of Florida County of Brevard.
Without a written contract, it makes a lien claim very hard to justify. Did the homeowner us your design, and just purchase it from another person? Florida recently changed its interior design licensing statute, so depending on the timing of all of this, that could impact whether you would qualify for a design professional's lien under Chapter 713.
Depending on the nature of your service, it may be worth having a short agreement letting people know they may be responsible for design services if they don't buy from you; or alternatively, letting them know that designs are your intellectual property unless they buy from you. Those documents may not support a lien, but they would more clearly support a claim against a homeowner for stealing your work.
I suggest you contact an attorney to discuss what other rights you might have. Feel free to reach out if you have further questions.