@Tom Gimer  I bet Tom being an owner of a title company and an attorney might be able to assist or comment on this scenario..

Negotiation involved a thorough analysis of the property’s potential and local comps, allowing us to secure it at a price that would ensure profitability after renovation.

I would involve your insurance company.

Call it a partial or hypothecating or both but that’s another concern.Lastly does each person involved in the trade understand all these surrounding facts?

What I also enjoy is when people put out articles with contradicting view points and in six months or a year point to the - "see how correct i was", well yeah you placed bets on both red, black and green so you were going to be correct because you bet on all options.

As RE agent could facilitate deal without third party involvement Lessons learned?

For properties like these, the condition and price often don’t warrant upfront financial vetting, and too many barriers can add friction to the process.When it comes to lead times, I agree they’re essential for occupied homes—if tenants are involved, a 12-24 hour heads-up allows everyone to prepare.

Per this NY Times article, the average American knows around 600 people.https://www.nytimes.com/2013/02/19/science/the-average-american-knows-how-many-people.html#:~:text=The%20average%20American%20knows%20about,do%20you%20know%20named%20Kevin%3FPer the US Census Bureau, the average American moves 11.7 time in their life, which based upon an approximate lifespan of 84 years, works out to be about every 7 years.https://www.census.gov/topics/population/migration/guidance/calculating-migration-expectancy.html#:~:text=Using%202007%20ACS%20data%2C%20it,one%20move%20per%20single%20yearSo, if the average American knows 600 people and they each move about every 7 years, that means that the average American knows around 85 people that move in any given year.How many of those moves do you want to be involved in?

If an agent is involved your chances of having a meaningful conversation with the seller is limited. 

For a single family home the size and scope you're describing, I wouldn't involve an architect unless you're looking for end-to-end project management.