Exhaust all of your conventional or government financing options before you get into DSCR. 

Many investors switch over to these loans once they have a few properties (typically 5 on average, but you are right there in the typical fashion for property number 4)Check out these series of articles on the loan topic published on BP as well for all you need to know about this option!

Then when you are done you can weigh the option between refinancing or just keeping the current loan.

It is a very tough market and renters have a lot of options.

The most knowledgable people on market rents are the prospective renters who are currently shopping around trying to find the best option for themselves to live.

Quote from @Stevan Stojakovic: Given that your property isn’t a primary residence, a cash-out refinance is likely your best option to access equity.

Or you can try and lease option it, but be sure to mentor your tenant all the way to get pre-approved, otherwise you have an 80% chnace they won't be able to buy it. 

DSCR cash outs will allow you up to 75% with reasonable rates and 80LTV with higher rate options, but only for SFH rentals.

The options are:1. you could get it from investors but then you will need to use an SEC exemption2.

Closing Costs – Remember to factor in refi fees and how long you plan to hold the property to determine if refinancing will save you money overall.Since you mentioned owning the property for only a year, your equity might still be limited, impacting your options or leading to higher costs.