Renwick & Associates, Inc. is a consulting firm practicing in the areas of civil engineering and land surveying under the laws of the State of Illinois. Our corporation was founded on May 1, 1963 and maintains a corporate office in Ottawa, Illinois.

The Renwick staff has extensive experience in providing municipal, residential, commercial, industrial and governmental land surveying and civil engineering services. Our firm provides complete engineering services in the areas of subdivision design and development, water and wastewater treatment and infrastructure design, design of roadway reconstruction and resurfacing projects, storm water management and master planning, engineering design studies, flood studies, floodplain relocation, stream stabilization and construction management services. Additionally, our firm provides land surveying services in the areas of ALTA/NSPS Land Title Surveys, boundary and topographic surveys, subdivision platting, GPS Control Surveys, route surveying, wetland location, FEMA elevation certificates including LOMA and LOMR applications, floodplain surveying and FIRM flood elevations.