Is the soil suitable for septic and a well, or does it have city water and sewer? 

He has a 800+ credit score and healthy saving.

I focus on riding the wave of transitions and have achieved both healthy ROI and rapid appreciation. its the reason I think Philadelphia is a good place to invest.

- are the soils ok?

We need a healthy down payment, but luckily with the shift in pricing we appear to have a lot of room between what's left on the current mortgage vs. what the property will most likely appraise for...The main problem I am trying to tackle in my head right now is if refinancing in July when we close in October/November (and we will need/use conventional financing for that home) really a good idea?

To those who say there isn’t a correction coming, explain to me how 24% increase in home values in one year is healthy when the average is 3%. 

When people are in their 20's and 30's they are very healthy and don't give a second thought to this.

The root cause of the foundation problems is possibly the expansive clay soil.

There is also a max size to them and it is usually based on the available size of a drain field you can install and the type of soil you have.

The inspection stated not all was level, but fully functional.Main problems:- Low soil clearance or *no* clearance crawlspace - under the entryway and under the bathroom could not be accessed at all unless crawlspace is dug out.