M.H. Grenz & Sons welcomes projects that require extra creativity and ingenuity. Our extensive experience and exceptional problem solving abilities give us the confidence to take on risky odd-ball projects. We enjoy the challenge, and we want you to get the results you're looking for. M.H. Grenz & Sons General Contracting is a family-owned and operated contractor located in Northwest Pennsylvania. We provide services in residential, commercial and industrial settings, offering custom design and custom building with the highest commitment to quality.