Excavating and Site Development Services. Wendell Rexford & Sons is a family-owned full-service excavation company that has been providing high-quality excavation and site development services to northern New Hampshire for over 50 years. Our team possesses the experience, expertise and equipment necessary to achieve the quality results your project demands. Contact us for your FREE initial consultation! Wendell Rexford & Sons is committed to providing environmentally responsible quality service.