Welcome to Collinson, Oliff & Associates, Inc.
Whether you are searching for property corners or a detailed map of your site, COA’s experienced Land Surveying Department can help you find what you need. Learn more.
As businesses, churches, communities and industries continue to grow, it becomes essential for their sites to grow with them. Learn more.
As Maryland’s terrain is made up of some of the most diverse geographic features in the country, it becomes evident how important land planning is. Learn more.