The first is that there's no consensus between tax professionals, and the second is that you will not like my personal interpretation.My interpretation is:Until the property is "placed in service" - everything goes into basis.Illustration.You buy a property July 1st.You finish rehab November 1st and put the property on the market.Your tenant moves in January 15th.The property was placed in service November 1st, and it does not matter that the tenant did not move in until the next year.Everything paid between July 1st and November 1st, including interest and utilities, goes into basis.

Instead of debates and personal opinion, look for proof https://www.ladbs.org/docs/default-source/forms/plan-check-2017/single-family-dwelling-duplex-plan-review-list.pdf under G (Interior Env) which defines the minimum requirement of a habitable room (aka bedroom or bathroom).

Second- these developments where the same person develops, builds, and then requires you to use them for management- they always suck.

You might get transferred a couple times until you reach the right person.

Having trusted boots on the ground makes all the difference when you can’t be there in person.

. $50 per bedroom, so a 4-bedroom house will cost you about $150~200consumables - bathroom supplies, kitchen supplies, beverage supplies: $20~30 per week, depending on how much you providewear and tear - towels, linen, kitchen utensils, some furniture: $1000~2000 per yearRepairs/replacement for things that guests break or steal:  $1000~2000 per yearAlso, if your personal use is less than 14 days a year, the entire property's expense is deductible against STR income, but if you use more than 14 days, then you will have to calculate the proportion of how many days it's rented out vs how many days you or your family uses. 

In my personal experiences a lot of structural items start with bad drainage.

A lot of the basis of my position on this can be described as “gut feel”.  

Personally, I like to use Notion for this type of task, but I'm sure there will be others on here that will recommend Monday.com, ClickUp, or Asana.

Building and maintaining those connections feels like a crucial part of the process.