I agree with Jim - the code is revised constantly. That should not limit you from buying older construction.
Make sure you don't pick a property because it is code compliant. I am an architect and in my opinion, older homes are generally built much better than new construction (and that's why the code has to change, to make sure contractors follow minimal requirements).
In Miami there are a number of older neighborhood where no home will be built to today's code, and as long as you educate yourself on what that means, you can make minor changes where it's necessary (like GFCI outlets in kitchens and bathrooms near the sink, or hurricane shutters and/or hurricane impact windows).
Inspectors are not regulated in the State of Florida, so just make sure you work with someone that comes well recommended.
If you are looking at newer construction, one way to figure out quality is to look at properties built by the same contractor/developer and see how they look after years of construction and how they are "weathering".
hope that helps,