ADU Plumbing Services
Northern California
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Expert Plumbing for New and Existing Accessory Dwelling Units
Are you building an ADU on your property, or already have one?
ADUs range from backyard cottages to garage conversions. And each type needs plumbing that meets building codes.
At Millennium Plumbing Specialist, we specialize in ADU plumbing in Sacramento and surrounding counties in Northern California.
From new construction to maintenance on existing units, we’ll keep the plumbing running smoothly.
ADU Plumbing for New Construction
If you’re building a brand-new ADU, plumbing is one of the most important systems to plan early.
A poorly designed setup can lead to costly changes later or even problems with building permits.
Here’s what’s usually involved in ADU plumbing for new builds:
We’ll determine if your new ADU can tie into the existing main line or if it needs its own dedicated supply line. Pressure, distance, and pipe size all matter.
- Sewer Connection or Septic Tie-In
Most ADUs in Sacramento will connect to the city’s sewer line. But if you’re in a rural area, we can also connect the plumbing to a septic system. Either way, we’ll make sure it meets local codes.
- Drain-Waste-Vent (DWV) System
This system moves waste out and allows air into the pipes to prevent clogs and bad smells. It must be installed properly to pass inspection.
Depending on the ADU’s size and setup, we’ll help you choose the right type of heater—tank or tankless.
- Gas Lines (if needed)
Planning a gas stove or gas-powered heater in your ADU? We’ll install gas lines that are safe and code compliant.
We work directly with homeowners, builders, and general contractors to make the plumbing process smooth and stress-free.
ADU Plumbing for Existing Units
Already have an ADU that needs plumbing work?
We handle repairs, upgrades, and maintenance for all types of existing accessory dwelling units.
Common ADU plumbing services include:
- Drain cleaning and clog removal
- Leak repairs and pipe replacement
- Kitchen and bath fixture repairs
- Water heater installation
- Backflow prevention for separate systems
What is an ADU?
ADU stands for Accessory Dwelling Unit.
It’s a smaller, separate living space built on the same lot as your main home.
ADUs can be:
- Detached units in the backyard
- Converted garages or basements
- Above-garage apartments
- Attached additions to the main house such as in-law suites
With the housing shortage in California, ADUs are more popular than ever.
They’re great for multigenerational families, rental income, or just extra living space for home offices, guests, and more.
But to be livable, your ADU needs a strong plumbing system—and that’s where we come in.
Why ADU Plumbing Is Different in California
Local Building Codes
Every city, including Sacramento, has rules about how ADUs can connect to water and sewer systems. We stay up to date on the latest codes, so your ADU project passes inspection the first time.
Shared or Separate Utilities
Some homeowners want the ADU to have its own meter and shutoff valve. Others prefer shared systems with the main house. We’ll explain the pros and cons of each option and help you decide what works best.
Conservation Requirements
California has strict usage rules. We can help you meet them by installing low-flow fixtures and energy-efficient heaters.
Small Spaces, Smart Design
ADUs often have limited space. We specialize in compact plumbing layouts that maximize function without taking up too much room.
Why Choose Us for ADU Plumbing?
At Millennium Plumbing Specialist, we’ve helped homeowners across Northern California build and upgrade their ADUs with professional plumbing services.
We understand the details, deadlines, and decisions that come with ADU projects—and we’re here to make your life easier.
- Local experience with Northern California ADU regulations
- Clear, upfront pricing
- Fast response times and friendly service
- Licensed, insured, and reliable plumbers
- Custom plumbing solutions for any size unit
Get Your ADU Plumbing Done Right
Give us a call to discuss your ADU project, get a quote, or schedule a service visit.
We proudly serve Sacramento, Elk Grove, Citrus Heights, Rancho Cordova, and the surrounding areas.
Contact Us to schedule ADU plumbing service
Free estimates available
