Utility costs were kept low in large part due to using battery powered equipment when and where possible. 

I called several PM's and could not find any under 30-35%, so unless you are super familiar with the town rules and regulations, have a rock solid trustworthy housekeeping crew and local handyman to fix things (most HK's won't even change a light bulb for you, or batteries, so you need a handyman or PM type person), I don't see how you can make a profit unless you self manage.

I do not use the OR PM module; I don't need "owner statements" since I am not a "property manager" (owner statements include things like maintenance expenses, etc.); my service is a booking management service.

Modular is simply a stick built home, built in a controlled environment and delivered to the site in Modules and assembled, Manufactured homes are factory built to HUD code and the steel framing for the trailer is part of the floor system, they can be set on blocks and skirted, or set on a foundation with a basement.

Cameras are hardwired so no batteries to need replacing.

Also, Delta faucets are easier to repair, and you can actually buy parts for them.Shower/tub faucets and valves- we go with Delta here too.Per City code, we have to have fire extinguishers in the kitchens, mounted on the wall near the stove and smoke detectors with 5 year batteries. 

Buy the new lithium battery smoke detectors they are twice as much cost but the batteries last over 10 years instead of 1 .

Every time the cut a container, the engineer was on the clock, $$$.I like the modules Jay posted but not sure they will make it to the east coast anytime soon

However, street smarts, discipline, and self-confidence are modules never taught in university, at least, if they did, then I missed those classes. 

Nothing to fail, no batteries.....