Compliance in the Built Environment For more than two decades, Otten Consulting Group has provided facility condition, building code and due-diligence assessments across the country. OCG has inspected millions of square feet of public and private buildings, pedestrian facilities (parking, walkways, intersections), parks and outdoor recreational venues. Our proprietary software and survey technology assure expedited inspection schedules, detailed reporting and a collaborative process that has earned us thousands of satisfied clients in 24 states.