@Shakir Ansari , you area code is PA and so is your profile..

We don't use any kind of integration and just deal with codes manually.

These are professionals with additional training and a stricter code of ethics.

Of course the work has to be done according  to current building codes, however, the same scenario in many places in the states (specifically in California) is completely different, because you have to schedule a city inspection for each construction milestone (rought electrical, rough plumbing ing, sheetrock, stucco and so on) and each inspection could take  4-6 weeks before the inspector is available to come to the site (at least that is the case in the bay area).

No need for railings on that deck because it is low enough that they are not required by code.

Examples would be going after deals in higher priced neighborhoods that are in loan default, that are on the MLS for over 180 days that are NOT short sales, deals with code violations, homes with fire damage (most fire departments have records of these), homes that have an unusually lower amount of beds/baths/sq footage for the area leaving room to add on, and the list goes on.

Now, you may be picturing me coding high-speed trading algorithms but I am patient investor with a long term view.

Is it possible to put some type of lock on the door that has codes that can be changed, or a card that has to be swiped? 

Especially if it's an old house that's not up to todays codes.

I've zoned in on zip codes 76310 and 76306, but any other recommendations would be great!