DearCustomer- I can find no law that would prohibit you from revealing the various locations where you have performed work unless you have signed some sort of confidentiality agreement with the customers. There is no expectation of privacy when hiring for goods and services with the exception of several professions such as law or medicine where confidentiality is a must.
In your situation there is even a public record of the job so it is already in the public domain. The only problem you might run into is that if the various homeowners (I am assuming this is residential work) get upset they could file some civil nuisance action against you which you would then have to defend. I'm not saying they would win but you would still have to deal with the problem.
It all depend on how important this is to your advertising. It may be better to request permission from past customers in advance so you can see if there might be a problem individual that you may want to avoid.
David Kennett - JD - Attorney at Law
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