Prime Time Plumbing ADU Plumbing

Considerations for Your Backyard Oasis

Prime Time Plumbing: Your ADU Plumbing Specialists

At Prime Time Plumbing, we understand the unique challenges of plumbing for ADUs. Our experienced and licensed plumbers specialize in designing, installing, and maintaining plumbing systems for these backyard additions. We'll work closely with you to ensure your ADU plumbing meets all code requirements and functions flawlessly for years to come.

An Accessory Dwelling Unit (ADU) adds valuable living space to your property. But before you break ground, it's crucial to understand the plumbing considerations for your new unit. This guide will delve into the different plumbing systems for ADUs, sewer lateral work, and navigating the permitting process with local water agencies.

ADU Plumbing Systems: Slab-on-Grade vs. Crawlspace

The type of foundation you choose for your ADU will significantly impact the plumbing system:
  • Slab-on-Grade: This popular foundation eliminates the need for a crawlspace. Plumbing pipes are typically run beneath the concrete slab, requiring careful planning and insulation to prevent freezing. PEX tubing is a common choice for its flexibility and freeze resistance.
  • Crawlspace: A crawlspace offers easier access to plumbing for repairs and maintenance. Here, pipes can be run beneath the floor joists, allowing for more flexibility in placement. However, crawlspace foundations may require additional insulation and vapor barrier to prevent moisture issues.


Sewer Lateral Work: Connecting to the Main Line

Sewer lateral refers to the underground pipe that carries wastewater from your property to the main sewer line. When building an ADU, you'll need to consider:
  • Sewer Line Availability: Check if there's an existing sewer line on your property with sufficient capacity to handle the additional waste from the ADU.
  • Tapping into the Main Line: Connecting your ADU to the main sewer line might require a permit and professional installation.
  • Sewer Impact Fees: Some municipalities charge impact fees to offset the strain on the sewer system caused by new construction.


Join us at Prime Time Plumbing, where expertise meets excellence, and let us take care of all your plumbing needs with the highest level of skill and dedication.

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