I started by building a 12-door portfolio using the BRRRR method and self-managing initially.

This does not involve the utility company meaning that you will still have to go into the property, read the meters, then individually bill each tenant for their usage and understand the bill is still in your name.

Legal and Regulatory HurdlesReal estate transactions involve legal complexities that can overwhelm newcomers.Solution: Learn about legal requirements early on and seek professional advice when needed.

BRRRR method is also a great way to go - good luck!  

Find Brandon's videos on YouTube for the "four square" method of analyzing homes and practice.

.- Put Upward pressure on real estate operating costs: Increased costs for raw materials and supplies, and the likely increased costs for labor involved in many real estate related CapEx and maintenance projects signal the risk of increase in costs for real estate operators.If there is no impact on near-term supply, a modest slowing of inbound (illegal) migration, more reason to believe that the cost of many goods and services will increase, and real reason to believe that inflation triggered by something other than an increase in the money supply (namely the cost of specific goods and services that are NOT housing going up, which comprise the CPI) will force the Fed to raise rates, this, on the whole, is not good for real estate investment returns. 

There are a few options(1)You can get connected with the larger wholesaler firms in the area (2) go through PCPAO site and skiptrace the buyers of similar properties as yours, (3) hunt down the agents involved in the sale of properties similar to yours or go to local REI meetings and pitch it to the investors there. 

Are you able to get a partner involved? 

And while nothing is foolproof the most consistent method of finding good vendors is relying on OTHER real estate investors that have worked with those vendors. 

What are the best methods to independently verify zoning and land use data to ensure compliance with local regulations?