I gave my tenant 90 days written notice for a 20% increase.
SFH, owned by individual.
In my case, I hadn’t raised the rent past four years as the tenant had pleaded hardship etc and now that the circumstances have changed in the tenants family, it is time to adjust closer to market.
I’d say if the proper notice is given, there probably isn’t much you can do as far as strict legal recourse.
If you’ve been a good long term tenant with minimal maintenance, there could be a business case to make to keep the rent 5-10% below market as wear and tear is a real cost especially if there are larger families etc.