Tenants do want another tenant having access to their home and the manager doesn't want tenants knocking on their door all hours of the day.

You could also explore HELOC options, which might give you access to the equity you've built without needing a full refinance.

Lender had access to my savings account, DTI, credit scores, etc.I put 3% down and used the rest of my savings for the rehab.

Side effect, this gives you access to FHA should you ever find a property to use it on. 

Larger checks often want longer track records.  2014 founding doesn't cut it when these same investors have access to groups with 1998 founded companies, with more deals and similarly consistent returns.Co-investment: Larger checks often do require significant co-investment.  10% of equity is common.  

Actually, they may be 7-day BLOCKS (i.e., you could do 7 days or 14 days but not 10).We co-own on the NC coast where most of the rentals are Sat-Sat.  

It will increase the value even to investors, you just may have longer days on market when you want to offload because fewer buyers will have access to a loan like that. 

HELOC: good for short-term use of equityAre there other ways to access equity in your home?

There are plenty of neighborhoods where you can still get access to a pool for your guests. 

Block.