From the City of Philadelphia's website: An Activity License is needed to conduct business within Philadelphia.

A duplex is an excellent idea.

My 5 year goal is to become a professional real estate fund manager.I happen to live in NYC where there is a large concentration of people with 7 figure incomes who often have a difficult time obtaining a more than nominal return on their at-risk/disposable capital.

David Dey excellent info!

One point though with newbies in CA, is that, they're scared of the large entry amount.

Fortunately it yields good returns but I wouldn't advise anyone unfamiliar to invest in my area (although it could be done successfully it would definitely have a large impact on that bottom line amount that out of state profit seekers dream of). 

check out this YouTube link on how to automate your yellow letter through Microsoft word and excel.  

Feel free to review my profile for my website with more info or send me a message. 

We have a website, we are on Google with Adwords, (spent $700 on that last month) we mailed out over 1,500 postcards to vacant houses and houses that are coming up for tax sale, we have an ad on craigslist, and yet no deals. 

Manny Pichardo Excellent!