We started out splitting the Heat, Water & Sewer on a over/under duplex.

My contractor works on many homes and he at times will find someone willing to sell off market. 

Its a central heating and air system that disperses hot or cold water to each unit through a network of pipes.

Here are some that I'm aware of:- Galvanized pipes - typically 40-50 useful life, could rust from the inside out, could get eventual pipe failure- Zinsco or Fed Pacific electric panels w/ aluminum wiring that could be a major fire hazard- Wiring in general (e.g. knob and tube)- Asbestos in the walls- Lead paint- Heating system - boiler?

Smoke detectors, GFCI outlets, handrails, working heat and hot water, etc.

Now, the headlines are saying things like we may have avoided a recession, the FED stopped rate hikes, Mortgage rates are dropping, Housing markets are heating up in 2024.  

The building offers full-service amenities, including a 24-hour doorman, onsite management, a pool, an observation deck, a children's pool, an indoor playground, a Jacuzzi, tennis courts, and a yoga & gym facility.

Perhaps, the heating system is old and inefficient oil heat and you modernize it to a high efficiency unit with a cheaper fuel like natural gas.

Mindy  Sure here is another link also I've opened it up for long term stays and charge extra for amenities like pool heating. occupancy is 70 percent https://www.airbnb.com.sg/rooms/792049658049677604?

A lot of our residential clients who move to Milwaukee from other states cite concerns about excessive summer heat, wildfire smoke or lack of fresh water for their reason to move to Milwaukee and these concerns seem to grow every year.