If you're looking into hot flip markets right now the biggest two are Fishtown and Brewerytown right now, some emerging areas are parts of East Kensington (around American street to Frankford), West Passyunk, Grays Ferry, Germantown, and a few more in the pipeline after that.

Corner lot, 2 attached units facing one side of the street.

I went there knowing what it was all about (a pitch to buying the other seminars) but I figured it was right down the street from me and I figured it would be a way to meet other RE investors. 

Great lunch got to the street we wanted and on on side brand new luxury homes, on the other vacant lots with great views. 

Plus, I see potential escalation if the tenant gets angry, or they park in the street or on the neighbor's driveway, block the other unit access, etc..

River street is a blast too haha.

Know jobs are in the tank but U of Nevada just up the street from downtown and really cool older buildings around there.

As Robert Shiller said in a Wall Street Journal article a few months ago, people are beginning to think about real estate like they think about the stock market.What is your opinion about the buying frenzy in California right now?

Cash is ok for most (may be dangerous in some parts- for my property i do not feel threatened, there is also a school across the street), however, definitely get a receipt book.

However it is a two way street and I good contractors treat their customers well; they care about the project and their customer's budget and, if they have a longer term view, whether their customer is being successful ("making money") as the long-term success of their customer bodes well for repeat business.