Service and city pages beat a single generic page
A chimney sweep business typically offers several distinct services: sweeping, inspection, repair, liner installation, cap installation, waterproofing. A single page listing all of them in one paragraph gives Google nothing specific to match a search for "chimney liner repair" against, compared to a competitor with a dedicated page for that exact service.
The same logic applies across cities if the business serves more than one town or suburb. A dedicated page per city, not just a service-area setting in the Google Business Profile, gives Google a specific page to rank for "chimney sweep [city]" rather than relying entirely on the profile to carry that weight.
The star-rating gap is unusually wide in this trade
A listing sitting at 4.8 stars or higher gets clicked 3 to 4 times more often than one at 4.0 stars, a wider gap than shows up in some other home-service categories. Part of the reason is trust: a chimney sweep is being invited into a customer's home to work near an active fireplace, and safety-adjacent trust concerns make the star rating carry more weight in the decision than it might for, say, a landscaping quote.
Review count and how recently they've arrived are both confirmed factors in Map Pack ranking specifically, not just in a customer's own judgment. A profile with reviews arriving steadily through the year, not only during the fall rush, signals sustained activity rather than a seasonal pop-up operation.