Service Link Commercial "SLC" is a full service commercial facilities maintenance company specializing in pressure washing, p ... arking garage/lot sweeping, outsourced building engineer/technician placement, and day porter cleaning services. SLC was founded over 20 years ago and has become known as a high quality commercial maintenance services provider. Customers we service include CBRE, Cushman & Wakefield, ABM, JLL, Costco, Nationwide, and many other world renown real estate owners and managers. read more