It sounds like you’ve got a solid foundation with your rental property, and I love the ambition behind your plans to build a property management and maintenance company—it’s a great way to take control of your investments while creating additional opportunities.Best of luck to you! 

There will also be closing costs to refinancing into DSCR.Lenders need 6 months to refinance a loan, anything sooner, you're probably paying a good amount of points / DSCR has to be rock solid.There also may be additional costs in maintaining your property.

Additionally, the rental arbitrage strategy is not investing, its operating a business.... an extremely risky business.

Quote from @Eric Huntermark: Additionally, as I'm thinking about conventional loan products as well.

If you have any additional advice please let me know!

In addition, if you're actively flipping properties in the area, I currently have time on my hands and I'd be happy to support you in one of your projects in exchange for learning in depth about the process. 

.- Access to funds: I could consider a cash-out refinance or a HELOC to access funds for additional investments.- which property would you recommended me to keep? 

1) Renting garage units2) Additional Pet Fees3) Adding flooring insulation in the upper unit led to improved efficiency and sound reduction for lower tenants.

Sorry one additional item I hit post too soon...The reason I asked about TIA is because you generally want to get a contractors opinion of cost prior to lease during that negotiating phase so you know how much that TIA covers and what you'll be coming out of pocket for.  

For an additional $450 they will include the required engineering seals.