Ollie Cherniahivsky's 53 years of experience in architecture and construction, combined with his entrepreneurial spirit, suggest a high earning potential. Considering his extensive experience in comprehensive planning, construction, and new business development, I estimate his hourly rate to be around $250. This is in line with the median salary for architects in the Philadelphia area, which is around $80,000 per year. However, as an entrepreneur and owner of his own firm, Ollie's earning potential is likely higher. Additionally, his skills in negotiation, urban planning, and sustainability are highly valued in the industry, which further supports this estimate.