This is true for bonus depreciation items as well.  

Stick built homes on city lots are going to be expensive. 

The two existing LTR units (on my family’s property) were built 5–8 years ago at a cost of about $80,000 per unit, so I’m estimating a 20% increase in costs for the new builds.My plan is to use the equity in the land as the down payment for the construction loan, which I expect will make closing costs the primary upfront expense.

I built two that way and out of the 90 homes in Ivy Ridge estate if I think through it.

I would try to buy properties starting at a specific date so not large ticket items come up.

Residents in flood-prone areas were offered newly built, elevated homes on safer ground in exchange for transferring the title of their damaged original homes to the city. 3.

Install cameras and exterior lighting on timers, place no trespassing signs, and place items that indicate occupancy - like a BIG dog bowl near the front door, shoes, etc. 

If your property management company is good and has built an internal maintenance team which has set rates and had strong relationship relationships with licensed contractor which should keep costs in control, you should never need to shop contractors on your own I wouldn't think.So in short, our policy is give us your preferred contractors upfront if you have them, but then we work all tickets to resolution including dispatch, and payment of invoices.This is of course for operational expenses.  

Due to item 1, adding an ADU can require years to start achieving any return (once the accumulated cash flow recovers the initial negative position).4) Adding an ADU is a slow process.

Should we explore that route, purchase an already built duplex in Peoria or another part of the Midwest?