You can customize your site however you wantWhen you use someone else's website builder, you do not have any rights to change the program of the website, install additional modules, etc.

The correct piping has been installed.

Inspections kept rejecting conventional financing & even after installing new furnaces & HW tanks it failed to get approved.

This issue has been issue.Did the LL install New thermostat? 

I'm thinking about having a walk out entry installed for my basement.

Couple things that come to mind are schedule a regular landscaping company to trim the lawn, make sure utilities are on but shut the water off at the meter just in case there is an interior water break the property wont be damaged, make sure your insurance covers a vacant property and or a vacant property undergoing construction, if its in a bad area you may want to consider an alarm system (i use simply safe because you can install it yourself and use it on other properties as needed) leave some exterior and interior lights on and finally have someone go and check on the property once in a while if its going to be sitting.

You need power, sewage, water hopefully all available with  out having to drill a well or install a septic. 

If it doesn't make sense to install these, then don't move forward with the deal.

Here are some ways to increase cash flow from your properties:1.Raise rent: Regularly reviewing and increasing rent can help increase cash flow from your properties, but it’s important to ensure that the rent remains competitive and in line with the local market.2.Improve property management: Hiring a professional property management company can help streamline operations and increase efficiency, freeing up more cash flow.3.Increase occupancy rates: Increasing occupancy rates through effective marketing and tenant retention strategies can increase cash flow by reducing the amount of time the property is vacant.4.Implement energy-efficient upgrades: Making energy-efficient upgrades, such as installing energy-saving appliances or adding insulation, can help reduce utility costs and increase cash flow.5.Implement a preventative maintenance program: Regularly maintaining and repairing properties can help reduce the costs of major repairs down the road and increase cash flow.6.Diversify your portfolio: Diversifying your portfolio by investing in multiple properties in different geographic locations and markets can help reduce risk and increase cash flow.7.Refinance: Refinancing your properties can help lower your monthly mortgage payments, freeing up cash flow for other expenses or investments.By implementing these strategies, you can increase the cash flow from your properties and achieve a higher return on your investment.

I think remove it and install it at your house or in your garage and leave the baseboard heat.