Newmarket, East Gwillimbury and surrounding areas in York Region. Contractors Newmarket, East Gwillimbury and surrounding areas in York Region. Contractors Search | Advanced Search | New Members | Coupons and Discounts | All Categories Sort alphabetically by... Name City Como Maintenance Service _ East Gwillimbury, Ontario Arman Sehalic (905) 392-0480 Como Maintenance Services is Property Maintenance provider, located in Newmarket serving clients across the GTA. Learn More | Visit Site | View on Google Maps Masumi Landscaping _ 4228 Vivian Rd.Cedar Valley, ON L0G 1E0 Mr. Wade Masumi (905) 717-9107 Learn More | Visit Site | View on Google Maps Jarrah Contracting Services _ 19-1225 Gorham Street, NewmarketGTA & Surrounding Area, ON L3Y 8Y4 Jay Jarrah (905) 251-1141 (416) 906-7626 Jarrah Contracting Services vision is to lead the industry of General Contracting, more specifically in the Interlock, Landscaping, Insulation and painting industry and be as efficient and environmentally friendly. Learn More | Visit Site | View on Google Maps If your business isn't here, contact us today to get listed!