Tremont is an excellent area with really high market rents and super high demand.  5000+ sq ft. is huge too, congratulations!

Depending on your long term goals I wholesale and use the assignments fees to buy free and clear properties and I use creative marketing to buy and keep in my portfolio. 

I've finally made the decision to get into the market to Build to Rent.

Get familiar with price points in your market and what looks like a good deal. 

The partners between a realtor like myself (proficient in renovation experience), a general contractor, usually a loan consultant to support the buyer and the lender, (along with a buyer and seller of course) are the parties involved.I come across so many homes perfect for 203k or HomeStyle buyers, on and off-market, it isn't funny.

I do however keep my a little below market value so I get a bigger tenant pool.

The markets have changed quickly, and what worked 5 years ago may differ significantly from what will drive success today.

I avoid the multi-family market here, so unfortunately, I will not be a good go-to here, but I am confident you will find quality resources and help here on BP.  

We scan and analyze every new listing in an investor's target markets and send an email alert of high-potential properties based on their custom criteria. 

If looking to change the market value of property, well there you go.