Run for mayor (or local equivalent), win, and then push for/implement a bunch of rules that make the town inhospitable to tourists.

I assume the tourism brings in money to the local community, yeah? Cutting off that income will probably mean you won’t be able to win the next subsequent election, so act fast.

Yeah, it sucks if housing prices are catching up and you don’t own a house.

But in a small town there’s probably pretty high levels of home ownership so most voters are probably happy their prices have gone up. And it’s probably helping the entire local economy.

But small towns also have cheap land pretty close and local builders who don’t charge crazy prices. So instead of buying a house in town, you may have to build 5-10 minutes away.

But who knows what OP means by small town. Depending on where you are in the country “small town” can mean drastically different things.

A quick scan of the OP’s history suggests that they live in Norway, but I don’t know if that tells us anything about what a “small town” is. Nor do we know why the town is popular. It’s at least plausible that tourists stay in that small town because there are so many places to stay, and it’s close to some area that is the real reason the tourists are there. (like a mountain to ski on, or something).

I doubt the OP expects a real answer, because they didn’t provide enough information.