Okay, let’s tackle this. So Mark Alt has 19 years of experience as a contractor/entrepreneur, which is a significant amount of time. Skills like remodeling, construction, customer service are in demand. Location is Baltimore, MD, which is a moderate-cost-of-living area. According to the Bureau of Labor Statistics, construction managers and supervisors in the Baltimore area typically earn around $75-$100 per hour. Considering Mark's experience and skills, I'll estimate his hourly rate to be around $75, which is on the lower end of the range. This is because he's not a construction manager/supervisor, but rather an entrepreneur/contractor. Some contractors in the area might charge higher rates, but Mark's role and experience suggest a lower rate.