Sweat equity! It's a wonderful thing. If not done, causes the seller to need to sell for less. If done by the the buyer, gives an immediate increase in value.
Think about all the trailers that have sold
over the years. The ones that were filthy and smelled like a rat cage sold
for less $$. Those that sparkled (turn key) and were ready for someone to immediately use, often sold
for thousands more. Now this is a general statement, but you get the idea.
This is the big thing with flippers. Increase the value with sweat equity!