Cass Plumbing & Heating in Normal Heights, San Diego, holds CSLB License #140162 (C-36 Plumbing) and has operated continuously since 1948, making it one of the longest-running plumbing contractors in the 92116 ZIP code. Scott W. Cass serves as president of the corporation, which earned BBB accreditation with an A+ rating and maintains a secondary CSLB License #1048243 covering warm-air heating, ventilating and air conditioning, fire protection, and concrete work. The equipment yard at 4569 30th Street, Suite C, stocks video inspection cameras, electronic leak locators, hydro-jetting rigs, slab saws, core-drilling rigs, jackhammers, cement mixers, and dump trucks — a fleet depth that allows single-dispatch resolution on jobs other shops would split across multiple subcontractors. Heating-system service covers gas-line installation, water-heater swaps between tank and tankless configurations, and boiler maintenance — mechanical trades that run parallel to the ductwork and air-handler projects at Surf Bros HVAC when whole-house retrofits touch both the water and air sides of the building. Cast-iron drain replacement is a recurring scope in Normal Heights, where pre-war bungalows along Adams Avenue and the surrounding residential streets carry original waste lines that corrode after seven or eight decades underground. Commercial tenant-improvement plumbing for restaurants and retail spaces along El Cajon Blvd and Adams Avenue falls within the scope, covering grease-trap installation, backflow-preventer certification, and ADA-compliant restroom rough-ins. Sewer-line video inspections feed footage to a monitor so homeowners can see root intrusion, bellied pipe, and joint separation before committing to a repair method — trenchless lining or traditional excavation. Electrical coordination on remodel projects runs through partners such as Frank Electric Inc, ensuring that panel upgrades and circuit additions proceed on the same permit timeline as the plumbing rough-in. The 30th Street address places the shop at the western boundary where Normal Heights meets North Park, with service calls covering the entire mesa from University Heights south of Meade Avenue to Kensington east of Kensington Drive.