Regulations are expected in the future.

We have supplies.

Even before COVID-19 came onto the scene, it has been a prevailing theme over the last year or two that cities and states are pushing more laws limiting the abilities of landlords to collect rent, evict tenants who don't pay, renovation and increase rents, and other regulations regarding how their business is operated. 

Places like Home Depot will do 6 months no interest, but that is only for supplies and you need to make sure you can pay that back on time.

@Luis VacaWe are currently receiving order on supplies and will renovate now through the rest of the year.Occupancy at purchase was just under 90%.There are several of the units we could rent but are beginning to renovate instead.The first 30-40 were renovated before we bought and rents we’re raised so we are confident in finishing basically where they left off.A partnership split opened this opportunity up to our group.

You aren't aware, that providing financing to an occupant was one of the fucuses of bank re regulation legislation Dodd Frank. 

In addition, your future home in Oak Harbor has a very strong rental market with insufficient supply relative to demand.  

The location of the garage in relation to the sewer line connection at street, the distance of the run of other utility supply lines, entire scope of work, and your finishes will dictate price.If you are simply using the existing footprint of the garage to convert it to a legal ADU unit per CA new codes, you should expect somewhere between $50k-$100k depending on specific circumstances.

Nothing has changed for me on the supply side. 

Also I would read up on the laws before starting wholesaling. https://www.mass.gov/lists/statutes-and-regulations-real-estate-brokers-and-salespersons check this out and pay extra attention to the licensure section.