Top 3 Plumbing Contractors in Walnut

Compare the highest-rated plumbing professionals in Walnut, California. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

Mike Diamond Plumbing & Heating

4.8
(800 reviews)
Verified

A large, well-established regional company known for its 24/7 emergency service and extensive expertise. They operate a fleet of trucks and have a strong reputation for handling everything from minor leaks to major commercial plumbing system installations. Their brand recognition and high volume of reviews indicate significant market trust.

They serve Walnut from a central hub, but their primary service address for the region is in a neighboring city.

Specialties & Features

Emergency plumbing repairs
Water heater installation and repair
Drain cleaning and sewer services

Business Information

Years in Business:25 years
Licensed:Yes
Insured:Yes
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#2

Benjamin Franklin Plumbing

4.7
(250 reviews)
Verified

Part of a nationally recognized franchise known for its professional, punctual "plumbers in the familiar blue vans." They emphasize upfront pricing, clean and respectful service, and are a top choice for both routine maintenance and complex residential plumbing projects.

While their physical office is in a nearby city, they explicitly list Walnut as a primary service area.

Specialties & Features

Residential and commercial plumbing services
Leak detection and repair
Bathroom and kitchen plumbing

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
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#3

All Phase Plumbing

4.9
(150 reviews)
Verified

A highly-rated local contractor based in the immediate area. Their near-perfect rating across multiple platforms suggests a strong focus on personalized customer service and high-quality workmanship. They are an excellent choice for homeowners seeking a dedicated local plumber for repairs, remodels, and installations.

Serves Walnut and the surrounding cities from a local base.

Specialties & Features

Pipe installation and replacement
Water heater installation and repair
Drain cleaning

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes
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Why These Are the Top Plumbing Contractors in Walnut

** The plumbing market in Walnut, California, is competitive and served by a mix of large regional powerhouses and highly-rated local contractors. As an affluent suburban community with a mix of newer developments and older homes, there is consistent demand for both emergency repairs and planned renovation work. The average quality of service is high, as evidenced by the consistently strong reviews for the top-tier companies. Pricing in the Walnut area tends to be at a premium, reflecting the higher cost of living and the expertise of the service providers. Customers can expect to pay competitive rates for the Greater Los Angeles area, with emergency and after-hours services commanding a significant surcharge. The presence of nationally-backed franchises (like Benjamin Franklin) alongside robust local operators (like All Phase Plumbing) and major regional players (like Mike Diamond) provides residents with a range of options from large-scale operations to personalized local service.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Walnut regulations and climate