One just uses the tried and true wholesaling methods and each geographical area will have its unique ways of doing this.With a lot of land deals starting with tax sales. this is common in CA AZ etc etc. currently I am funding deals in WA ID MT CO AZ TX FLA and then some other states.

Finding handymen is NEVER easy:( Often, you have to use trial & error method and weed through several before finding one that is acceptably (never pefect) reliable, quality, will fix warranty issues and has decent prices.Try visiting a Home Depot 6-8am on a Saturday.

One of the methods I plan to utilize is to list the space on craigslist.

Egress: Two methods of egress, typically a door and a window.Ceiling height: At least half of the room should have a ceiling height of 7 feet.

Are there specific methods you're interested in (BRRRRs, vacation rentals, flips, etc)? 

This method is particularly relevant if you're in a market with high rental demand.Many property owners have found that adding an ADU significantly increases their property's market value and appeal.

Bandit signs, cold calls/texting along with direct mail is the method most people use.

I decided I’d find another method. 

The BRRR method is not about "numbers working" in a given market. 

Your problem is probably your method of wholesaling.