After hearing about, and personally encountering some horror stories of disagreements between homeowners and contractors, I am wanting to establish a clear contract to use with a new general contractor. 

When using more than 2 it adds a lot to my processes and have found the difference between these companies is very slim and is based on who you get from those companies, so I have stuck with these two (for now)

Either would be a great option; I'd probably choose Roseville because it's more established, but the City of Elk Grove deserves a lot of credit for its impactful growth programs, so it wouldn't be a bad option. 

I'm aware that I'll have to talk with a zoning board to rezone a single family lot to a multifamily lot.

It was built in the 2010s and located in an established neighborhood with convenient access to schools, amenities, and major transportation routes.

Yes, there’s still a lot to learn and accomplish.

I understand that starting out, depending on how fast you want to build your portfolio, you could spend a lot of time at it.For those with established investment portfolios, how much time is required to maintain it?

Your advice means a lot to me and I appreciate getting to look at single family investing from this angle.. 🙏🏻 

Establishing those city relationships can save a lot of time!

A lot to think about.