The crash caused significant structural damage, and the driver fled the scene, later reporting the vehicle stolen.

Definitely get the structural engineer to look at the joists & support beams to see what's up with the uneven floors.

How would you structure this deal to make it work for a single family home build?

The fee structure is so brutal on the client side it makes a lot of sense from the client perspective and you can take advantage of some free marketing. 

While it’s certainly possible, the reality is nuanced and depends heavily on how you structure your investments, manage your properties, and account for the inevitable costs of ownership.1.

We just have to hope mortgage rates decline a little bit in 2025 while the supply does not drop so that we can have more home sales in 2025 compared to 2024.

Looks like the fence fell down at the end.For a weekend of work and a few hundred in supplies, I think you could make the place look much more appealable. 

From the top of my head - mildew, moisture buildup, dust, structural cracks...

You will be forced to solve problems and get scrappy which will carry through all the next phases.Then, I would see if I could possibly start with an addition, garage build or other small and simple structure for your first ground up -- I started with a 250 sqft master suite addition.

For many of us, our cost structure would be higher than yours (vacancy, turnover, maintenance, cap ex) over the long term.