Calvada Surveying, Inc. - A Leading Land Surveyor Calvada Surveying, Inc. is a leading professional land surveyor providing professional land surveying services, including ALTA Surveys, ACSM Surveys and 3D High Definition Land Surveying ( High Definition Laser Scanning and 3D Scanning service ) services throughout the Western United States (Arizona, California, Colorado, Nevada, Texas, Utah, and Wyoming). We are one of the best land surveyor companies working for the real estate, construction, engineering, environmental, public works, municipal, and telecommunications industries.