Want to avoid a bureaucratic nightmare? Secure a permit before doing any work on your home or property. If you don't believe me, just talk to the Glendale, Calif., couple who were recently fined $347,000 for improperly pruning their trees. After they created a web site documenting their side of the story, city officials are now admitting the fine was "excessive." But the family still had to hire a lawyer and are facing a fine in the neighborhood of $10,000. The family made the mistake of taking the tree trimmer's word that they didn't need a permit. If I said it once, I've said it a thousand times: Always check with your local town government before doing any work on your property.
Also, as a locksmith, if you are going to change locks or add locks to your home, check with the fire marshall to be sure the new locks are within code.
While a fire marshall likely will never enter a private residence to check that everything is up to code lock wise, if you sell the house, you may find you will have to change all those new locks.
Double cylinder deadbolts are one no-no of most fire codes as are some things we consider child-safety items that are out of reach by children and high enough up on most doors that you have to stand to de-activate them, thus putting your head right in the smoke.