@Immanuel Sibero & @John Thedford,I'm an audio book guy and I looked on Audible but I couldn't find it.  

Also how much do you guys think it will roughly cost to build a 300 sqft studio like structure with a kitchen, laundry, and bathroom. i appreciate the help, let me know if more detail is needed. below are the guidelines for the adu in accordance with the city. 

Specifically, 2 office studios on one meter. 

Richest Man in Babylon (Audio version because it had some unique names/words)3.

Separate studio or one BR unit with separate entrance,  aka "Granny Suite" for multiple purposes including a place to keep for yourself private when renting the rent of the house.

Current market value estimates are based on Chase home value est and recent comps from realtors/redfine/ recent sales in the same complex.All 3 apts are well maintained with great tenants and have been worked on to the T so unless something really crazy happens I do not anticipate major expenses in the next say 3 to 5 years.Where it says full reno it includes shower and kitchen and new floors and everything.Monthly breakdowns;Brooklyn NYC - 400sqft Studio in Zip 11206Purchase price 2013 - $170k (plus $20k Full reno Includes new inwall ac + new Lochinvar tank-less gas water heater install)Current market value est; around $300k (2 mins walk to subway and 10 minutes from Williamsburg)Rental income: $1600Expenses: $295 (25 year tax abatement and very low hoa)2.

Currently renting the basement studio for $900.

The commercial space used to be a business, and it is closed permanently.The commercial space has two bathrooms and no kitchen/sink.Discussion:- I would like to convert it into a studio (residential unit).

So the actual garage area could be made into a studio apartment pretty easily. 

I  avoid places where cost of living is so low that studios and 2BR/1BA are going for 500$/mo or less.