Roofing, Siding, Fiberglass, and Remodeling Services. General home service. You have a vision of what your home should look like, and with the help of Aleczander Construction, that vision can become a reality. Reach out to our general contractor in Northfield, NJ to personalize your home. We're prepared to do everything to we need to help you, including kitchen remodels, bathroom remodels, siding services, and even roof installations. Just tell us what work you need done.