This is the retainer most single-location service businesses end up on. The work is unglamorous and it compounds: your Google Business Profile gets managed like a channel instead of a listing, your citations get built and then kept accurate, reviews arrive on a schedule instead of by accident, and a few pages a month get properly optimized. Nothing here is a growth hack. It is the set of things that actually determine whether you show up in the map pack for the searches that turn into phone calls.
The honest expectation on timing: map pack position moves in months, not weeks. Foundation work lands in month one, the first measurable movement usually shows up somewhere in months two and three, and the compounding gets obvious around month six. That is why there is a three-month minimum — not to lock you in, but because anything shorter cannot tell you whether it worked. After that it is month-to-month with thirty days notice.
You are hiring one person. I do the GBP posts, I write the on-page copy, I respond to the reviews, I run the reports, and I am the one on the monthly call. There is no account manager relaying questions to a specialist, which means when you ask why a ranking moved you get the actual answer from the person who did the work.