You are offering less than market value and then selling that contract at a higher value.

Taxes here are 2-3% of the value normally, but can be higher/lower depending on the area. 

Determine what you would be willing to pay.....while not really accurate in most cases, maybe just start with tax appraised value or some % of that is what you would be willing to pay.   

(The property won’t be worth its original value plus what you spent on solar panels, it will be worth some amount less.).

Let's be honest, in most situations like this, is the buyer Agent really providing all that much value that the buyer would not get if they just wrote the offer through your wife?

How did you add value to the deal?

Once you close, the sales price is the value. 

It's about much more than fixing leaky faucets; it's about enhancing tenant satisfaction, optimizing operational efficiency, and ultimately, increasing property value.

You have to attach a value to the amenities that houses have and do a guesstimate at the value that another area might have.

Most nonQM lenders are going to have a $100k minimum so if your VALUE is $105k, you'll be limited on which lenders will do it.