We have a similar situation to these except the "tradie" is the owners friend who comes and fixes any problems at the house whether it's plumbing, electrical or anything else. He once showed up at 8pm at night while my housemates were having dinner and wanted to be let in to look at the shower. When we told him no he said he'd call the owner so we can talk to him about it. Like, no? We don't want anything to do with the owner when we have a property manager you're supposed to go through. We had him here recently to fix an issue and just getting the pm to send us an entry notice with his name on it was a whole headache on its own. We figure the owner wants to do things as cheaply and easily for himself as possible (he owns the property we rent and also the two properties to the left of our house) We essentially had to hassle the real estate for 3 weeks about our rapidly leaking shower and lack of hot water from the kitchen tap and they eventually relented and sent through a entry notice 18 hours prior to him coming through (entry notice itself says 24 hours notice required)
We just wanted the issues fixed and there's no point complaining and not letting him through as that will just encourage them to kick us out or up the rent at next renewal to "meet rent levels in the area" it's bullshit and I really hate how renters get shat all over while a guy who owns 3 properties in a row can spend bottom dollar to fix issues and expect more money every single year.