Sun Construction & Facility Services, Inc. Share: Construction Contractors Sun Construction & Facility Services, Inc. Visit Website Request Info 1232 Boston Avenue Longmont, CO 80501 303-772-6776 303-444-6774 (fax) www.sunconstruction.com About Map About Sun Construction & Facility Services, Inc. is a full-service commercial/industrial general contractor providing a broad array of construction and facility services throughout the Colorado Front Range. What's Nearby? Distance: 5 10 15 20 25 50 mi.