Nothing is more expensive than building a new except perhaps remodeling an existing home. I addition to the costs involved it is a very invasive process if you are living in the home during the project. With all of this trouble and expense it only makes good sense to insure that the work is done properly. Even if the project is properly permitted by the municipality (and many are not), the municipal inspector cannot be depended upon for this sort of work. He is looking only for major code violations, and not for all violations or quality of workmanship. Protect yourself and your considerable investment with oversight of your project by Texas Inspector.