Address: 430 E I St Unit F Unit F, Ontario, CA 91764... Phone: (909) 855-3153... Website: https://designatedlocalexpert.com/ontario/... We’re Roy and Marly Williamson, your dedicated Ontario real estate experts. We believe in putting our clients first, offering tailored strategies and expert guidance to meet your unique needs. Whether you’re buying your dream home or selling your current property, we’re here to make the process smooth and stress-free.