Given Lois's extensive experience in strategic planning, negotiation, and business development, her rate could be comparable to industry standards for senior executives. Considering her location in Brookline, Massachusetts, and her role at a condo trust, her rate might be on the lower side compared to similar positions in finance or corporate sectors. However, her skills in financial analysis, valuation, and marketing strategy could command a higher rate. Based on average salary ranges for senior executives in the Boston area, I estimate her hourly rate to be around $150, taking into account her experience and skills.