I'm thinking about regular maintenance (smoke detector batteries, furnace filters, etc.) as well as the urgent calls that could happen.  

Panasonic is creating a battery plant, Meta and Google are building data centers, with the potential of a Meta campus in the near future, our airport just completed a large remodel a few months ago.

How often would someone be onsite to change batteries?

Someone going to jail for 2+ years for DUI, battery, or theft?

ON Wednesday this week I took my 10 hour CE for my mortgage bankers license and there was a module on this exact subject your quote is straight out of the syllabus darn near verbatim.

Invest in PM platform with a good accounting module.

And there are some tax advantages called depletion one might explore.I made a presentation at Google headquarters and did a module on Timber investing to all those sub 35 year old engineers and told them if U can start a Roth and put some buddies together and buy your timber in your Roth you could make some serious retirement money tax free..

My big mistake recently was not replacing the batteries in my smart lock.

Take a look at MAS 90, it's a module professional accounting package, you'd need the basic and the RE stuff, it's been around awhile,  I ran a mortgage company with the full package.

5; Do you have someone that will look over the boats to insure the holding tanks are in good shape, the toilets are working properly, the batteries are good, the appliances are working properly, the electrical systems are safe and working properly, the top deck is in good shape?