Many cost segregation study professionals will offer you a free quote on the cost of the cost seg study specific to your property as well as the potential tax savings.HOW LONG DOES A COST SEGREGATION STUDY TAKE?

@Arshiya Taami yes, you could potentially keep the great rate in the #% range that you have and tap in to the equity with a 2nd loan of up to around 80% to use for the down payment funds you are looking for.

I would check as best you can before you even contract, but also for sure once you do contract and have the documents in hand.While there are some places for $150,000, there should be relatively few of those any more, certainly in buildings that have long term potential. 

Educate the land owner on the potential profit run the numbers and go over the basic proxy and blue prints.Make sure you have a seasoned and qualified Builder/GC because they can be a deal killer with wasted time and inflated material and extended completion dates.

(substantial value add opportunity, significant appreciation potential etc.)  

I turned to the Diontalk Binder strategy which educates the tenants on the current price of market rents, section 8, etc, and what I could potentially earn if they were to move out ( In this case being 1500 for a 3b 1ba). they then realize this and know paying a $400 increase (36.6% Increase) would be the best option vs moving out, living in cheaper housing, or going to market rent in the area.

That said, I’d make sure to document your intent to occupy each property clearly to avoid potential issues later. 

Accepting even a small amount can complicate the eviction process and potentially delay your ability to terminate the lease in court.

I have a potential private lender, but I need to determine if this is a viable investment opportunity and explore the best financing optionsYou’re a first time investor going for 36 units… alone?

The income approach might also be used, evaluating the potential rental income the ADU could generate.