GLA or still just a garage?

[Tom4value]

You need to keep in mind that a substantial portion of the population lives in unincorporated areas of the country where there is no entity to issue permits. They are a non-issue, because they don't exist. I can do anything I want to my home, no permit required.

If no permit is required then no permit is required! You did your duty to your client. If they are, it is your job to inform your client.