New paint, flooring, new kitchen remodel, complete basement refinish, complete landscaping refinish,structural reinforced and water mitigation added What was the outcome?

The house is in good structural shape, but will require some work to get it to either selling or renting condition. 

This is ultimately up to you and you could structure it several different ways (consultation fees, price per lead, monthly fee, success based fee, equity in the deal, etc) but your price should be enough to do the following: 1. cover the cost of your labor, time and any expenses incurred2. create a profit for you and your employees3. be competitive in the marketplaces with similar service providers

Everything is negotiable, you don't have to pay the full purchase price (though they may not accept your offer if you don't) Like real estate, there are many ways you could structure a business acquisition through a mix of equity and debt.

I'm assuming you have pulled permits and got a crew in to frame out the structure.

I was able to work with a smaller lender who set me up with hourly base pay and bonus structure for assisting other LOs while I learned the biz, got licensed, and developed my own lead funnels.

My question is this: how should I go about structuring my interest in the property?

Stucco scares me as I assume it's hiding significant masonry and/or structural issues. 

That said, we usually look for a detached garage, shop, shed or other structure that can be converted to an ADU.

I got screwed by an angry contractor who knocked a portion of the structure down.