I'm new to BiggerPockets and have found this site from "The Book On Rental Property Investing" by Brandon Turner.

in particular make sure you know the value that will be added by the ADU and that in your case both units may be rent controlled (no 15 year exemption in some jurisdictions for a garage conversion were garage is over 15 years old.  

Two conflicting truths: - Wholesaling is definitely a real part of the real estate investing industry and makes up at least 3-5% of transaction volume by members of this forum when polled, especially flippers. - I believe (and will bet anyone who cares to oppose me) there are less than 1,000 people in this country who can claim $100K or more in assignment feels or similar wholesaling income for at least 3 years in a row. 

Here's what I've done so far,..The CMA was done by a broker who has been licensed since the 80's, to get the most accurate listing price. 

It would be like being trained by a neighbor on dog walking and them giving you a piece of paper calling you a certified dog walker. 

So if those aren't in order, you start by getting them in order.  

You made a mistake in the very beginning by unclogging the toilet. 

@Leo CuomoRecommend exploring as many sources as possible to get referrals AND cross-reference them to get as much accurate information as possible.Check out NARPM.com, BP’s Property Manager Finder (BiggerPockets: The Real Estate Investing Social Network), etc.Also, encourage you to learn from the mistakes of others - by reading posts here on BiggerPockets about owners not having their expectations met by their current Property Management Company.

A low price would be important but not too low (so that it raises buyer concerns) and ideally a brand that is well known and liked by MH buyers. 

The building is currently owned by a reputable cannabis retailer, so the sale would be a sale/lease back.