Duncan Plumbing Ent., Inc.

Diamond Certified Company Report
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Duncan Plumbing Ent., Inc.
355 SURVEYS
12 CONSECUTIVE YEARS
SINCE DECEMBER 2014
CERT 2213

Diamond Certified Ratings Dashboard

355
Verified Customers
Surveyed
Customer Loyalty
Customer Satisfaction
Helpful Expertise

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation
  • License Verification
  • Legal & Finance

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  • Survey Responses (reviews)
  • Diamond Certified Video Player
  • Researched Articles & Profile
  • Capabilities
  • Photos
  • Expert Contributor Advice & Tips
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Diamond Certified Company Report SUMMARY UPDATE November 2025

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Duncan Plumbing Ent., Inc.

Rated Highest in Quality and Helpful Expertise for 12 Consecutive Years.

Quick Summary

  • Diamond Certified since 2014
  • Provides plumbing installation and repair services for residential and commercial clients in Santa Cruz County
  • Available 24/7 to handle plumbing emergencies
  • Member of the Plumbing-Heating-Cooling Contractors Association (PHCC)

Top News Updated

COMPANY MILESTONES

Duncan Plumbing Ent., Inc. is celebrating its 25th anniversary in 2025.

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SPECIAL PROMOTIONS

Duncan Plumbing Ent., Inc. is currently offering several specials, including $75 off any water heater installation, $99 for a video pipe inspection and $50 off any service.

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Top Survey Responses

From a recent Diamond Certified Survey Response: “They were on time and honest about the workload. Quoting and quality control are very important to any [type of] repair work, and they did both in a timely manner and were honest about the cost.”

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From a recent Diamond Certified Survey Response: “They were at my home within an hour of my call. They were courteous and professional, and they explained everything to me. I’ve already recommended them to several people.”

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Blogs & Articles

Duncan Plumbing Ent., Inc. recently published a new blog on its website titled, “How to Naturally Unclog a Bathroom & Kitchen Sink.”

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Duncan Plumbing Ent., Inc.
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Duncan Plumbing Ent., Inc.

Plumbing & Sewer Line Contractor
|
Santa Clara  Santa Cruz Counties
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355 SURVEYS
12 CONSECUTIVE YEARS
SINCE DECEMBER 2014
CERT 2213

Rated Highest in Quality & Helpful Expertise Performance Guaranteed

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  • Liability Insurance
  • Business Practices
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Diamond Certified Researched Articles on Duncan Plumbing Ent., Inc.

researched article

Owner Scott Duncan works on a custom boiler.

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Duncan Plumbing Ent., Inc. provides a wide range of plumbing services for residential and commercial clients throughout Santa Cruz County. In addition to handling general plumbing work like drain clearing, fixture repairs and water heater installations, the company has the training and equipment to offer specialized services like radiant heating system repairs, sewer line inspections and repairs, and copper and PEX repiping.

Owner Scott Duncan says Duncan Plumbing’s customer-oriented business approach has been a crucial aspect of its success. “From the time a customer calls us to the time we complete the job, their satisfaction is our number one priority. We fix problems in a timely and efficient manner, and we follow up after each service call to see how everything went. Our customers really appreciate how attentive we are to their needs."

Duncan Plumbing is available 24/7 to handle plumbing emergencies, which Mr. Duncan says gives its customers an additional sense of security. “We understand that emergencies happen, whether it’s a burst pipe or broken hot water heater, so we do our best to make ourselves available to our customers. They know they can count on us to take care of them, no matter what plumbing problems they have.”

Diamond Certified Researched Capabilities on Duncan Plumbing Ent., Inc.

Service Area

serving area
Santa Cruz County
Serving Santa Cruz County

Main Services

Plumbing
  • Commercial Plumbing
  • Drain Cleaning
  • Emergency Plumber
  • Gas Pipe Repair
  • Leak Detection
  • Plumbing Services
  • Sewer Pipe
  • Toilet Repair
  • Water Heater Installation
  • Water Heater Repair
  • Water Heater Replacement
  • Water Lines
Sewer Line Contractor
  • Hydro Jetting
  • Sewer Clean Outs
  • Sewer Drain Cleaning
  • Sewer Inspection
  • Sewer Line Cleaning
  • Sewer Line Repair
  • Sewer Line Replacement
  • Sewer Pipe Lining
  • Trenchless Sewer Line Replacement
  • Underground Plumbing

Additional Services

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Company Info

Hours
Mon
08:00 am - 09:00 pm
Tue
08:00 am - 09:00 pm
Wed
08:00 am - 09:00 pm
Thu
08:00 am - 09:00 pm
Fri
08:00 am - 09:00 pm
Sat
08:00 am - 09:00 pm
Sun
08:00 am - 09:00 pm
Closed
Contact
Duncan Plumbing Ent., Inc.

Capabilities Table

Company Name
Duncan Plumbing Ent., Inc.
Managers
Scott Duncan, Owner
Years in Industry
29 (Manager)
# of Employees
20
License
784642
Memberships
International Association of Plumbing and Mechanical Officials (IAPMO), Plumbing-Heating-Cooling Contractors Association (PHCC), Quality Service Contractors (QSC)
Founded
2000
Payment Accepted
mastercard,
visa

Key Factors

Select Photos From Duncan Plumbing Ent., Inc.

1 of 10Picture of Owner Scott Duncan works on a custom boiler. - Duncan Plumbing Ent., Inc.
Owner Scott Duncan works on a custom boiler.
Picture of Owner Scott Duncan works on a custom boiler. - Duncan Plumbing Ent., Inc.
Picture of  A proud team member stands beside a Duncan Plumbing Ent., Inc. vehicle, symbolizing their commitment to quality outcomes. Known for high customer satisfaction, they serve Santa Cruz. Copyright ©2025 Diamond Certified Resource.

 - Duncan Plumbing Ent., Inc.
Picture of  A dedicated craftsman from Duncan Plumbing Ent., Inc. meticulously solders a copper pipe in a rustic setting, reflecting the company's focus on quality outcomes. Recognized for expertise and quality, Duncan Plumbing consistently delivers top-notch service. Copyright ©2025 Diamond Certified Resource.

 - Duncan Plumbing Ent., Inc.
Picture of  A dedicated technician from Duncan Plumbing Ent., Inc. diligently adjusts a complex array of pipes, embodying the company's focus on quality outcomes. Recognized for their expertise and precision, they ensure optimal functionality in every project. Copyright ©2025 Diamond Certified Resource.

 - Duncan Plumbing Ent., Inc.
Picture of A dedicated worker from Duncan Plumbing Ent., Inc. carefully smooths fresh concrete on a sunny day, reflecting the company’s focus on quality outcomes. Recognized for expertise and quality, they transform simple tasks into lasting solutions. Copyright ©2025 Diamond Certified Resource. - Duncan Plumbing Ent., Inc.
Picture of  A sidewalk repair project unfolds quietly as a worker smooths freshly laid concrete, ensuring safety and quality for the community. Duncan Plumbing Ent., Inc. focuses on quality outcomes in every task. Copyright ©2025 Diamond Certified Resource.

 - Duncan Plumbing Ent., Inc.

Diamond Certified Expert Contributor Advice & Tips

Scott Duncan is a 22-year veteran of the plumbing industry and owner of Duncan Plumbing Ent., Inc., a Diamond Certified company. He can be reached at (831) 708-8909 or by email.

Scott Duncan is a 22-year veteran of the plumbing industry and owner of Duncan Plumbing Ent., Inc., a Diamond Certified company. He can be reached at (831) 708-8909 or by email.

Scott Duncan: Westward Expansion

By James Florence, Diamond Certified Program Reporter

SANTA CRUZ — For Scott Duncan, the decision to migrate from the East Coast to the West was prompted as much by the allure of adventure as it was by an occupational opportunity. “When I was 27, I moved from Cape Cod, Massachusetts to Santa Cruz,” he recounts. “My dad moved here a short time before I did, and he told me that in California, anything you could want to do was within a day’s drive, whether it was hiking, fishing, sailing ...

Read Full Article - Scott Duncan: Westward Expansion

Duncan Plumbing Ent., Inc. Website and External Feeds

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By Duncan Plumbing Ent., Inc.

Duncan Plumbing Ent., Inc. Ratings and Survey Responses (reviews)

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Duncan Plumbing Ent., Inc.
355 SURVEYS
  • 4.7
  • star image
  • star image
  • star image
  • star image
  • star image
12 CONSECUTIVE YEARS
SINCE DECEMBER 2014
CERT 2213

Diamond Certified Ratings Dashboard

Customer Satisfaction

Customer Loyalty

Helpful Expertise

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation
  • License Verification
  • Legal & Finance
Duncan Plumbing Ent., Inc.

Based in Santa Cruz, CA

4.7 avg. star score from 355 Verified Customer Phone Survey Responses

(Reviews: Scroll down to read them.)

Our surveys of only verified real customers produce the country’s most accurate ratings of local companies. Duncan Plumbing Ent., Inc. scored Highest in Quality and Helpful Expertise and passed the credential-based checks to earn Diamond Certified.

A Star Equivalent Score is calculated for each verified customer rating by weighting the 1–10 Quality score, the YES/NO Loyalty (intent to return) score and the YES/NO Helpful Expertise score. If Helpful Expertise wasn’t surveyed or didn’t apply, it’s simply not shown.