The report is as good as the answers you provide to their questions.The risk is that you answer a question incorrectly which generates an incorrect report.I would have a discussion with your CPA to determine what the land basis is(required to start the cost segregation).I would also have your home inspection / appraisal on hand to answer the questions more thoroughly. 

There are 2 big categories of answers to your question: Friendly/cooperative neighbor and not.

Simple answer - yes you can alter your funding source after putting it under agreement if you chose to use a hard money lender instead - i would just communicate with seller that hey I was going to use cash (assuming you have it from your heloc) and instead will finance some of it but let them know its not contingent on financing.

When faced with scenarios like this, it's tough to answer such a specific question with limited information. 

My goal is to build a comprehensive resource that not only answers key questions but also provides clarity on the entire process.The draft is based on my personal experiences working with clients, but I want to ensure it reflects the broader community's insights.

I have eagerly wanted to get into this space..I had a few calls with Sunrise that had some pretty poor answers / or lack of to my questions so was leaning toward Four Peaks since those conversations went better. 

Quote from @Jaycee Greene: Quote from @Jamie Parker: @David Mares The short answer is to build and develop the area.

Apparently @Ivan Castanon most want to try to sell you on something vs answer the question. 

So I'd say the answer to your question is it depends.

So, on second blush, I would change my answer to "definitely, hell no".