SEATTLE PLUMBER | KNOCKOUT PLUMBING & MECHANICAL

Call / text us now for immediate plumbing services.

Knockout Plumbing & Mechanical is a family-owned plumbing company proudly serving homeowners and businesses throughout Seattle. From older homes with aging pipe systems to modern condos and townhomes, our licensed plumbers understand the unique plumbing needs and permitting requirements of the City of Seattle. We provide reliable, code-compliant plumbing services including drain cleaning, sewer repair, water heater installation, re-piping, and full remodel plumbing, all backed by honest pricing and quality workmanship.

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Services:

01.

Drain Cleaning & Sewer Repairs

Quickly resolve clogs, backups, and damaged sewer lines with professional drain cleaning and sewer repair services. We use hydro jetting, camera inspections, and expert troubleshooting to keep your pipes flowing.

02.

Gas Line Services

From leak detection to full replacements, our certified technicians keep your gas lines running safely and efficiently throughout Seattle.

03.

Water Heater Services

Get reliable hot water fast with our quick, high-quality water heater replacements. Installed by Seattle’s trusted plumbing experts.

04.

Remodeling & re-pipe

Planning a kitchen, bathroom or laundryroom remodel? Need to upgrade old copper pipes? We handle re-piping and plumbing upgrades for seamless, code-compliant results.

05.

Leak Detection & Pipe Repair

Stop hidden leaks and burst pipes before they cause major damage. We specialize in pinpointing issues quickly and delivering lasting repairs.

06.

5. Sump Pumps & Outdoor Drainage

Protect your property from flooding with reliable sump pump installations and exterior drainage solutions tailored to Seattle’s wet climate.

FAQ

What areas do you service?

Seattle
Everett
Bothell
Snohomish
Woodinville
Lake Stevens
Lake Forest Park
Kenmore
Bellevue
Kirkland
Renton
Kent
Federal Way
Marysville

How fast can i get an appointment?

We offer immediate plumbing, emergency plumbing, and are available now – just give us a call or fill out our form and someone from our team will call you shortly! We are real people on the other end of the line, always available to chat.

What Plumbing Services Do You Offer?

🚿 Remodeling & Repiping:

Kitchen remodel plumbing, including fixture relocation and new layouts
Bathroom remodel plumbing, including tub, shower, and vanity relocation
Laundry room additions and plumbing rough-ins
ADU & DADU plumbing rough-ins for accessory dwelling units
Full-home repipes to replace aging or failing plumbing systems
Water and drain line rerouting for remodels or damaged lines
Valve replacements and upgrades

🛠️ Sewer & Water Line Services:

Sewer line repair and replacement
Water main repair and replacement
Leak detection and pipe repair
Outdoor drainage solutions to protect your property

🔥 Water Heaters & Gas Lines:

Gas, electric, tankless, and combi-boiler water heater installation and replacement
Gas line installation and repairs

💧 Pumps & Emergency Services:

Sump pump installation and replacement
Emergency plumbing services for urgent issues

Why Choose Knockout over a big commercial company?

At Knockout Plumbing & Mechanical, we deliver the same professional expertise as the big commercial plumbing companies — but with a level of personal attention, honesty, and responsiveness they simply can’t match. As a locally owned and operated plumbing company in Seattle, we genuinely care about our customers and our community. You’ll never feel like “just another number” when you work with us.

We offer competitive, transparent pricing and high-quality workmanship on every job — from small repairs to full-home repipes and sewer replacements. Unlike some national chains, we don’t cut corners, overbook, or upcharge you for unnecessary services. Instead, we take the time to understand your needs, explain your options, and get the job done right the first time.

If you’re looking for a trusted, reliable plumbing company in Seattle that combines big-company expertise with small-business integrity and care, Knockout Plumbing & Mechanical is the right choice for your home or business.

"Our goal has always been the same, to gain life-long customers and trust within our community. We want to make people's lives a little easier when something goes wrong."

Areas we service

At Knockout Plumbing & Mechanical, we provide fast, reliable plumbing services throughout the greater Seattle area and surrounding communities in King and Snohomish County. From Seattle and Bellevue to Everett, Bothell, Renton, and beyond, our licensed team is trusted by homeowners who want clear communication, quality workmanship, and dependable service. Whether you’re in Queen Anne, West Seattle, or Snohomish, we’re just a call away. We specialize in residential plumbing, remodels, re-piping, and emergency services and we’re always ready to knock it out.

All Areas We Service

Areas we service

All Areas We Service

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