ADU Plumbing in Bellflower & Orange County

Building an accessory dwelling unit or converting your garage into living space? Hans-on Plumbing provides ADU plumbing in Bellflower, Orange County and southeast Los Angeles County—from underground piping and rough-in through final fixture installation.
Work directly with owner Jay Hanson for clear communication, practical recommendations and careful workmanship throughout your project.
Plumbing From Rough-In to Finish
We provide plumbing for detached ADUs, attached additions and garage conversions, including:
Underground water, drain and sewer piping
Water supply lines and connections
Kitchen, bathroom and laundry plumbing
Drain, waste and vent systems
Gas piping for applicable appliances
Tank, tankless and heat-pump water heater installation
Shower valves, toilets, sinks and fixture connections
Main shutoff valves and pressure-regulating components
Plan Your Plumbing Before Construction Begins
Early planning helps coordinate fixture locations, pipe routing, sewer connections and water heater placement. We review the plumbing scope and coordinate our work with your general contractor or owner-builder around the project plans and applicable inspection stages.
Whether you need a complete plumbing installation or labor for a defined scope, contact us to discuss your project before work begins.
Local Experience. Personal Service.
You work directly with the plumber performing your installation. Our approach is straightforward: explain the work, establish a clear scope and keep you informed as the project progresses.
Licensed • Bonded • Insured
California C-36 License #1112480
Discuss Your ADU Plumbing Project
Have plans ready—or still working through the details? Tell us your project location, ADU layout and construction timeline so we can discuss the next steps.
Call 714-955-7042 or request an ADU plumbing consultation through our contact form.