@Allende Hernandez and batteries, if the thermostat or a smoke detector takes batteries that is for them to deal with. 

But at the same time, being “on call” or chasing trades can be a headache.What if I were to create a service that ONLY handled landlord tasks — not rent collection, not tenant screening, not managing the whole property — just the annoying one-off things like:Coordinating with a plumber/electrician when something breaks.Doing move-in/move-out inspections with photos/video to document condition.Overseeing a turnover (cleaning, patch/paint, locks).Handling those random city compliance to-dos (smoke detectors, inspections).Basically: you keep control of your property and tenants, but you can call someone local to be your “boots on the ground” when you don’t want to drive across town or deal with contractors.My questions for you:If something like this existed in your city/town, would you use it?

Regarding the smoke detector, the may be an exception for foreclosure properties since you don't/can't have access. you could make the argument to the bank they must give you access to inspect the smoke detector and do inspections at the same time. how can they give you access if they don't own it?

Had to register and install emergency lighting and additional carbon monoxide detectors.

Make sure you have water shut offs on the toilets/sinks, smoke detectors, and no sketchy electrical.

But you need a lot more than just a lease:- residential lease- rules & regs- lead disclosure- smoke detector notice- non-standard lease provisions- pet agreementThey have pdf's but I recommend the US letter size carbon copy paper (not the long legal size paper format) and wet sign.

I do write dates on things like smoke detectors and furnaces and take pictures because then I will Know even if I don't write it down right away.

Don't be in a rush, do your homework, do your math all the way to cost of setup including a bottle opener, iron and new smoke detectors.

Regular inspections and scheduled maintenance (like cleaning gutters, checking smoke detectors, and servicing HVAC) protect your investment.Treating it like a hobby, not a businessTrack income, expenses, and receipts properly.

Usually this only happens if the appraiser wasn't able to see carbon monoxide/ smoke detectors or did not have access to a certain part of the building and stated it on the report..