Northgate Companies Northgate Companies Search | Advanced Search | New Members | Coupons and Discounts | All Categories   Real Estate & Construction >> Real Estate Commercial/Industrial Northgate Companies 4525 Harbor Blvd.Columbus, OH 43231 | map | directions (614) 402-5664 Visit Site Need to update your categories or expand your listing? Or want to learn how your business can become a part of the Chamber? Contact us at membership@columbus.org for assistance.