If they were separately metered, each tenant would pay the $116.50 base fees and their individual use, which would be 3x higher than what they pay when sharing a meter.There are many options, but don't make it more complicated than it needs to be.

So far I got only individuals with a rent limit of 1200-1600is it  common to let  2 - 3 individuals who don't know each other rent the house?

And even fewer people seek to improve their ROI on BOTH the things they are not achieving and the things they are achieving.

But I’d be amiss if I did not suggest that instead you gain knowledge of the aforementioned 3 foundation by studying for a real estate agent/broker license, and then seek employment with REITs, real estate operating companies, real estate managers, or real estate brokers.  

Individuals? 

From what I’ve read in The Economist, demand for “off-the-beaten-path” destinations has increased post-pandemic, as travelers seek quieter, less crowded areas.In my backyard, investors and homeowners alike are increasingly drawn to areas like Gilbert and Chandler due to their exceptional growth potential and quality of life.

Successful individuals must learn to accept uncertainty, maintain a flexible mindset, and continue to invest.

If you are not attached to the duplex, could be a good time to sell to developers who want to convert to individual condo units.

Some other other options to consider that may be easier, would be these: 1) Take your $840k and have a money manager at Vanguard, Fidelity or Schwab invest it in individual bonds at a 4-5% return. 

Learn the lawsDon't use a contract "off the internet", laws vary by state and are also regulated on a federal level Learn the financing techniques correctlyDon’t skip parts of the processDon’t ever do a “kitchen table” closingUse the proper deedAn attorney can help you with the legal work, but the rest you are on your ownYour guru will not bail you out“Investing” in someone else’s deal by providing a small 2nd loan so the “investor” can pay for “cash to the seller” and for “closing costs” so he can do the deal is a very bad planKnow what problems can ariseLearn the responses and solutions to problems before they are needed Know everything there is to know about Title and what that meansKnow who a "protected class" individual isLearn the "back doors"Learn human natureUnderstand timelinesUnderstand regulation enforcement (some of these "mistakes" have a 10 year statue of limitations ( they can charge you 10 years AFTER you do the transaction) and carry hefty fines and possible imprisonmentThe court doesn't accept "I didn't know" for an answer"Know that the source of the lead plays a serious role in some states and federallyKnow how much of a "profit" pushes the boundaries to invite an investigationYou can be sued by the seller if you don’t do things correctlyYou are automatically at fault if an investigator or attorney or regulator gets involved.