This upgrade will elevate your property and give it a more modern feel.

Some counties/ cities will allow Certain parts or the house that are existing no to be brought up to modern code.

Pretty neat to see 'modern folk' moving homes as well:  https://www.youtube.com/watch?

This is probably the safest route to what you're hoping to do.If you can take income in some other fashion given how your affairs are organized there is a whole host of other ways to get paid for the value you're offering. 

If energy-efficient or modernized homes are in demand, this upgrade could make your property more competitive.Environmental Considerations: Gas logs are generally more environmentally friendly than wood burning, as they produce fewer emissions.

I use American Modern and properties are under an LLC.

It was the antithesis of a modern cabin, but it rented very well because it was unique. 

And have run my own business in a similar fashion always valuing my time, not just the money. 

If it appraises at say 150k but needs 50k in work to clean and modernize it, will it then only appraise at 200k after the work? 

Provide more modern amenities . . . larger communal kitchen, we/work style coworking space, laundry on site, pickleball courts, gym, etc, etc.