Although Philadelphia is only requiring you to get General Liabilty, I think you have a bigger exposure to Professional Liability (E&O) insurance. 

Confirm the zoning limitations: Mixed-use zoning can often allow for more flexibility, but you need to get the exact details.

I am not sure if anyone else saw it:"Full and Liquidated Damages": This limits both parties to just the damages stated in the contract.

If you're subject to the Alternative Minimum Tax (AMT), these deductions may be limited.

Warranties often have limitations, like they might not cover pre-existing issues, and there could be delays if they require you to use their contractors.I'm not sure if you've purchased a warranty already, but before purchasing a warranty, it’s a good idea to carefully read the fine print to see what’s covered and if there are any exclusions.

You’ll want to get loans from local banks and credit unions but you may run into issues with more limited features.

In my experience, most have limited product offerings.

If you really want one then I would have one drafted by an attorney to make sure you are square on all issues, liabilities, scheduling etc.  

Our process server charges $40 within the city limits.

I personally think #2 limits your audience.