Sullivan Contracting Services | 283 followers on LinkedIn. Sullivan Contracting Services is a Commercial General Contractor specializing in Facilities Renovations & Improvements. | Sullivan Contracting Services (SCS) is a General Contractor. We pride ourselves in our ability to self perform a great deal of work associated with steel fabrication and erection, concrete work, carpentry, sheet metal fabrication and cabinetry work. SCS also has a trusted network of subcontractors who have partnered with us over the years.