But I'm confused/curious as to why this Electrical Contr is so willing to burn bridges over couple of grand, is he just stupid?

Multiple tenants cannot pay, tons of bugs on the backend, User Interface doesn't load 30% of the time, the support team is based in the Philippines and they have no idea what they are doing just copying and pasting scripts. 

Assets identified in this study include:Building Systems: plumbing, HVAC and electrical distributionInterior Construction: flooring, drywall partitions and ceilingsStructural Components: doors, roofing, windows and wallsPermanent Fixtures: emergency lighting, restroom fixtures and signageThis engineering-based cost segregation study included the following methodology:Physical Inspection through a site visitDocumentation review including architectural plans, accounting records and construction documentsA cost analysis which utilizes engineering principles in order to allocate costs to their applicable asset classificationsCalculation of the depreciation schedule using MACRSAs a reminder, bonus depreciation started to phase out in 2023.

You think through the major systems in the house (roof, exterior or tuck pointing, hvac, plumbing, electrical, unit turns, common areas) and if they are all new you should be good for a few years (5-10). 

A good HI will go over your house with a fine-toothed comb.If you can find an Ex (or Retired) HI that is also Certified, that would be even better, since they will understand the structure/electrical/plumbing systems in more detail than a regular HI...

If you are doing a BRRRR and leaving older items in place, not updating electrical and plumbing, I think you need $300 t0 $350 if you are just getting started.

Lawn, snow, electric, gas, water ???

For example, focus on demo and structural work in month 1, plumbing and electrical in month 2, and finishing (flooring, paint, etc.) in month 3.

@Ori Skloot can you give more details on the electrical and plumbing work you did?

Start with house hacking, invest in credit and education, and leverage electrical skills.