All the rules regarding tax sale can vary tremendously by state and even local jurisdiction.

VA caps vary from city to city.

I know it will vary by location and by each investor but what numbers do you like to see when analyzing a deal?

I would imagine that the details of how builders structure partnerships vary based on the specific nature of the deal and the parties involved (how extensive is each person's track record, how much money will the investor be expected to invest, how much money are you willing and able to invest to show "skin in the game", etc.). 

Our hourly income is so high that I could never even consider working for anyone else (since I dropped out of college and lack the engineering/accounting/medical degree I'd need to make more from a job).When I started the business, I had imagined I could grow to several trucks run by lower paid guys, sit back, and enjoy a passive income.

(Your mileage may vary.) 

I ended up getting [most of] my degrees in engineering (aerospace), but never got to do it before that.

Each state has varying real estate laws and practices. 

While the asset managers will vary based on your region, in Connecticut the current asset manager that services the HUD's is BLB Resources, the place that is always referred to a gateway to bid and find more info is hudhomestore.com.As previous posters have mentioned, make sure the agent you are working with has a valid NAID issued through HUD because they will need one to place a bid for you.

For instance an apartment community that's typical renter is a young professional with a college degree in a relatively high paying job ($60k+) would be a class A with top of the amenities.