(you need to differentiate when a Mark Spain type company is running radio ads to attract business for themselves from it actually helping you out)4) Our TEAM or BROKERAGE has sold "X" homes!

@Keith Mintz Will you be running the house or leasing to a company that does sober living.

As a management company, we also have a duty to get a property occupied with a qualified resident as soon as possible and sometimes that means adjusting rents down for right now to generate revenue.  

Quote from @Aaron Wolman: I would call the companies (gas/water/electric) to get estimates, or an estimator out there.

Sounds like your 2 previous companies didn't know what they were doing.

I personally would only reno to add additional living space and leave the rest as is.

No talking to will fix a person raised to live like a pig.  

Call some local HVAC/Mechanical companies and ask what the average cost would be for this upgrade! 

I personally use Hostfully and their support team is great!

As a property management company in Washington, we help owners navigate these challenges and optimize profitability if they want assistance analyzing their property or planning future strategies.