My lender at the time ASSURED me that it was totally fine, as I had asked him explicitly multiple times about refinancing a year or so later and he knew about the lease.

Similar for bathrooms if virtually all are multi bathroom but you find a single bathroom, making it multi bathroom via new construction could be a value add.There are more sophisticated value adds such as add multiple adus via bonus density program.  

The buyers did a long inspection, multiple days... made a huge request for concessions based on what we knew to be purely made-up issues.

House hacking seems like the best strategy for me.My goal is to purchase a single-family home in Maryland, D.C, (from lurking I've heard D.C was terrible for investing) or Virginia with multiple rooms where I'm making monthly payments similar to what I pay in rent and other charges ($2000-$2500).

We are working on our first flip house and we didn't plan to do the BRRRR method, although it has come up in conversation multiple times due to the area it is in, we are still tossing the idea around of keeping it as a rental.

They are using rules to add multiple ADUs.Here is a list of why adding a single ADU in dingle family  zoned areas in my CA market is typically a poor RE investment:1) The value added by the ADU addition is often significantly less than the cost of adding the ADU.

I personally benefited from this when I first started and now provide my signature to partnerships I am not as actively involved with.

Lastly more to my point - I thought you worked for a MF syndication in the past that I was not sure but wanted to mention and that you are not just someone coming off the street having never been involved in a deal (unlike a lot of others).  

Obviously there is risk involved (as with anything).

., the 2006 or 2009 IECC — International Energy Conservation Code).Cost Considerations for a 90-unit or 112-unit Project:The actual cost of qualifying for the 45L tax credit depends on various factors, including:Energy Efficiency Compliance: The primary cost will come from ensuring that each unit meets the required energy efficiency standards, which typically involve energy modeling, certification from third-party energy raters, and potentially upgrading insulation, HVAC systems, windows, and other components of the building to meet the necessary performance levels.Energy Modeling: Typically, you'll need to pay for an energy consultant or engineer to model the building's energy performance and ensure it qualifies for the credit.