I wonder if the renters can (legally) allow an inspection? I could see your neighbors influencing them to do so, if there is the spite you describe. Might also result in them having the right to withhold rent….. I know very little real estate law – s[/quote]
Yes. Renters are allowed to invite an inspector into a property. They can also contact the inspector to come look at the property. Pretty obvious why this is the case. Bad landlords not keeping their property maintained.
To the OP. I am surprised you want to do work without a permit in rental property. It is maybe an urban myth but I thought that non permitted work was occasionally used by insurance companies to deny liability coverage. Leaving the Landlord bankrupt.. It does not seem worth such a large risk to avoid a small payment for a permit.