Plumbing Works for Garage Conversion


Transforming your garage into a comfortable living space demands professional plumbing expertise that addresses both functionality and compliance. At Modern ADU Builder & Garage Conversions, we deliver comprehensive plumbing works for garage conversion projects throughout Long Beach. Our licensed plumbers understand the unique challenges of retrofitting existing structures with new plumbing systems that seamlessly integrate with your home's infrastructure.


Converting a garage requires strategic plumbing considerations that go beyond standard renovations. From determining optimal fixture placement to ensuring proper water pressure and efficient drainage, our team approaches each project with meticulous attention to detail. We handle everything from initial plumbing design and permitting assistance to expert installation of water supply lines, waste removal systems, and necessary fixtures.


Our dedicated plumbing specialists coordinate closely with our construction team to minimize disruptions and maintain project timelines. We prioritize durable materials and quality workmanship that prevent future issues and provide lasting value. Whether you're adding a bathroom, kitchenette, or laundry facilities to your converted garage, our plumbing solutions ensure your new living space functions flawlessly.


With Modern ADU Builder & Garage Conversions handling your garage conversion plumbing needs, you'll enjoy a streamlined process from concept to completion, transforming your underutilized garage into a fully-equipped, code-compliant living space that enhances both your property's functionality and value.

Our Plumbing Solutions

We provide plumbing services that cover every stage of your garage conversion. Our approach ensures your new space functions efficiently with proper water supply, drainage, and integration tailored to your layout.

Custom Design and Planning

We begin by assessing the specific plumbing needs of your garage conversion. This includes determining water supply routes, drainage requirements, and fixture placement based on your intended use—whether it’s a bathroom, kitchenette, or laundry area.


Our design process considers existing plumbing lines and local building codes to optimize efficiency and avoid costly changes later. We create detailed blueprints that map out pipe runs, venting, and water heater placement for seamless installation.

Rough-In and Final Installation

Our team installs all necessary plumbing infrastructure during the rough-in phase, including water lines, drain pipes, and vent systems. We ensure these meet code regulations and accommodate your future fixtures.



Once walls and floors are prepared, we complete the final installation by fitting fixtures such as sinks, toilets, and water heaters. We double-check all connections for leaks and proper operation before finishing work begins.

Integration with Layouts

We tailor plumbing to fit the structural and design elements of your converted garage. This includes coordinating with electricians, HVAC, and framing teams to prevent conflicts and maintain workflow.


Our plumbing solutions adapt to varying garage layouts, whether open-concept or partitioned rooms.

We ensure pipes and fixtures align neatly with walls and floors, preserving space while meeting functional needs.

Project Management and Support

We prioritize clear communication and strict adherence to timelines and budgets. Our process ensures you know what to expect at every step, avoiding surprises and delays.

Transparent Pricing

We provide detailed, itemized estimates that break down all plumbing costs involved in your garage conversion. This includes materials, labor, permits, and any potential contingency expenses.



Our pricing is fixed once agreed upon, with no hidden fees. If unforeseen issues arise, we consult you immediately before proceeding. We also offer clear payment schedules to match project milestones, keeping your budget on track.

On-Time Completion 

We develop realistic project timelines based on the specific plumbing requirements of your garage conversion. Our team coordinates closely with other trades to prevent delays.



We respect your time by starting and finishing work as scheduled. Regular updates keep you informed on progress. If changes are necessary, we communicate promptly and adjust plans accordingly.

Why Partner with Us

We focus on delivering precise plumbing solutions that match the specific demands of garage conversions in Long Beach. Our team combines local knowledge, professional certification, and durable materials to ensure your project runs smoothly.

Licensed Plumbing Professionals

Our plumbers hold current licenses and certifications required in California. We conduct regular training to stay updated with plumbing technology and safety regulations. Each technician undergoes background checks and skills assessments before joining our team. This guarantees professionalism and competence on your site.

Locally Trusted Expertise

We understand Long Beach’s building codes and plumbing standards. This knowledge helps us avoid delays related to permits or inspections. Our experience with local climate and soil conditions allows us to recommend the best plumbing layouts and materials. We prioritize solutions that suit the area's unique environment.

High-Quality Materials

We use pipes and fixtures that meet California’s durability and safety standards. Our suppliers undergo strict vetting to ensure quality and reliability. Our workmanship follows manufacturer guidelines and proven installation practices. We document each step to maintain consistent quality control.

FAQs on Plumbing Works for Garage Conversion


We address common inquiries about the plumbing services involved in converting a garage into a functional living space. This includes the types of plumbing installations and modifications required to meet building codes and ensure usability.

  • What plumbing permits are required for garage conversions in Long Beach, CA?

    For garage conversions in Long Beach, you'll need a plumbing permit as part of your overall building permit application. This typically includes permits for adding water supply lines, drain-waste-vent systems, and fixtures. The Development Services Department requires detailed plumbing plans showing the location of all fixtures, pipe sizes, and connections to existing systems. Always check with Long Beach Development Services for current requirements as they may change periodically.


  • How much does plumbing installation for a garage conversion cost in Long Beach?

    Plumbing installation for garage conversions in Long Beach typically costs between $5,000-$15,000. Factors affecting cost include distance from existing plumbing lines, number of fixtures (toilet, shower, sink, etc.), whether a sewer line extension is needed, concrete cutting/trenching requirements, and permit fees and inspections. Homes with nearby existing plumbing will be on the lower end, while conversions requiring extensive trenching and new sewer connections will cost more.

  • Can existing home plumbing be extended to a garage conversion?

    Yes, existing home plumbing can usually be extended to a garage conversion. This is often the most cost-effective approach, especially when the garage is attached or close to the main house, existing water supply and sewer lines have sufficient capacity, and the main water line has adequate pressure for additional fixtures. The feasibility depends on your specific property layout, the condition of existing plumbing, and capacity of current systems. An experienced plumber should evaluate your specific situation.


  • How long does plumbing work take during a garage conversion project?

    Plumbing work for a garage conversion typically takes 3-7 days, not including inspection and approval time. The timeline breaks down as planning and layout: 1 day; trenching and rough-in plumbing: 1-3 days; fixture installation: 1-2 days; final connections and testing: 1 day; inspections: scheduled within 1-2 weeks of completion. Factors that can extend this timeline include concrete cutting, unexpected issues with existing plumbing, or special fixture requirements.

  • What plumbing fixtures are needed for a garage conversion bathroom?

    Essential plumbing fixtures for a garage conversion bathroom include a toilet with water supply and waste line, shower or bathtub with proper drainage and water-resistant flooring, bathroom sink/vanity with hot and cold water lines, proper ventilation (required by code), P-traps for all drains to prevent sewer gas, and potentially increased water heater capacity. Optional additions might include washing machine hookups if including laundry facilities. All fixtures must meet California water efficiency standards and be installed according to current building codes.