Just for a little bit of a different perspective, I am a builder in Texas. If you are having a home built, please read your contract and your warranty materials carefully. Make sure that your expectations are in line with what the builder has agreed to do in writing.
Inspections are definitely a great idea but you'll need to talk to your builder about the fact that you'll have an inspector before you sign the contract in most cases and make sure that he agrees to the inspector. In Texas the building standards are now spelled out very specifically. If you want your builder to comply with some code other than the relevant municipal code or the TRCC (Texas Residential Construction Commission) standards, then please have that in writing before hand.
Lastly, make sure that the inspector is a good one, get references from a good construction lender or another investor. Some inexperienced inspectors will try to find things wrong that aren't really. They evidently feel that if they don't find problems then their existence isn't justified.
Also make sure that you inspector can work around your builders schedule. Waiting for an inspector to show up for a pre-pour slab inspection is a ***** when the concrete trucks are there at 4 am.
As with every service profession, the good inspectors are underpaid and the bad ones should be shot.