Upgrading HVAC costs about $10k with electrical upgrades.

Maybe a fresh coat of paint, flooring, unless what's there now if salvageable, make sure your electrical and plumbing  are in good working order.

Co-living also takes quite a bit of money to create more baths, walls, different electrical hookups, etc.

Also doing all new plumbing and electric service/panel upgrade to 200amps.

Hi Joshua,To gain a clearer understanding of the overall condition of the home—including plumbing, electrical systems, HVAC, and the roof—and to identify any major issues such as asbestos, water damage, mold, foundation concerns, or wood-destroying insects, I strongly recommend having the prospective properties thoroughly inspected.

Less electricity, no chemicals needed (drain easily and have the proper systems for it), and can have  the same effect. 

Of course not, but required items such as electric, water, gas, and plumbing all need to be in working order.

Gas or electric would be a much better option, safety wise, from a house fire standpoint, CO danger, or danger to children or pets from the open flames. 

Quote from @Jeffrey Bourque: Hello All, I am new and this is my first attempt at purchasing a property with the intent to create monthly cash flow.The property: Triplex Listed at $140,000 - Total monthly rent income $2,150 - Tenants want to stay and are all willing to sign new leases for 3 years - 8 beds 5 baths and 3,500sqft livable space on a 4,800sqft lot - Heat and electric paid by tenants and water trash paid by owner $180 month - I have managed to talk the selling price down to $105,000 with a kick of $10,000 for closing and commissions so $115,000 all in - Building is in fairly good shape according to pictures and questions but have not done a inspection yet - some general maintenance repairs are needed according to the seller but nothing that seems to bother the tenants. - Taxes are on the higher side at $6,000 yearMy Numbers: $115,000 putting 20% of my money $23,000 and finance the rest with total expense of $1,834Monthly expense numbers: Future Maintenance 13% $273 - Vacancy 5% $105 - Property Insurance 5% $105 - Property Taxes 23% $500 - Property management 10% $215 - Office/Travel/Legal 4% $84 - Mortgage 26% $552 - Monthly Cash Flow - $316 per month or $3,792 per year so Cash on Cash = 17%I think this looks like it is a deal worth doing and I also believe I can bump the total rent up by $50 each tenant which I think make it even better.

Electric-needs a separate address or unit number.