Joh Harry H Construction

Joh Harry H Construction serves the Paramount and greater Los Angeles metro area with a comprehensive range of fire protection services, including fire sprinkler and alarm installation and inspection, backflow testing, fire extinguisher service, and kitchen hood cleaning. Operating since 1985, this corporation holds eight CSLB classifications—A, B, C10, C16, C20, C33, C36, and C39—demonstrating extensive licensing across general engineering, electrical, fire protection, and plumbing systems. With a 4.3 Google rating based on 10 reviews, the company maintains verified contractor status under license number 469845. Their multi-classification coverage enables them to handle both installation and ongoing maintenance requirements for commercial fire safety systems throughout Southern California.