20 Questions

Questions to Ask Plumber in Interview

Essential questions to ask when interviewing plumbers, helping you find a qualified professional who can solve your plumbing problems efficiently and at a fair price.

1

Are you licensed and insured, and can you provide proof of both?

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Why this works

Ensures they have proper credentials and coverage, protecting you from liability and ensuring professional standards.

2

How many years of experience do you have with this type of plumbing work?

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Why this works

Establishes their expertise and track record with your specific plumbing issue, ensuring they have relevant experience.

3

Can you provide references from recent customers with similar projects?

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Why this works

Allows you to verify their quality and customer satisfaction through feedback from past clients.

4

What is your diagnosis of the problem, and what are the options for fixing it?

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Why this works

Shows their understanding of the issue and reveals whether they consider multiple solutions rather than jumping to one answer.

5

What is your estimated timeline for completing this work?

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Why this works

Establishes realistic expectations for completion and helps you plan around the disruption.

6

What is your pricing structure, and can you provide a detailed written estimate?

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Why this works

Clarifies costs and prevents surprise charges, ensuring you understand the financial investment before committing.

7

What warranties do you offer on your work and the parts you install?

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Why this works

Protects your investment and shows their confidence in the quality of their work and materials.

8

What permits are required for this work, and who will obtain them?

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Why this works

Ensures legal compliance and clarifies responsibilities for navigating the permitting process.

9

What brands or types of fixtures and materials do you recommend, and why?

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Why this works

Reveals their product knowledge and whether they recommend quality materials that will last.

10

Will you or your employees be doing the work, and who will be on site?

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Why this works

Clarifies who will actually perform the work and ensures you're comfortable with who's entering your home.

11

What steps will you take to protect my property during the work?

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Why this works

Shows their professionalism and concern for minimizing mess and damage to your home.

12

What potential complications or additional costs should I be aware of?

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Why this works

Reveals their honesty and helps you prepare for possible unforeseen expenses.

13

How do you handle unexpected problems or changes to the scope of work?

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Why this works

Shows their flexibility and communication approach when issues arise during the project.

14

What is your availability, and how quickly can you start the work?

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Why this works

Ensures their schedule aligns with your needs and urgency for addressing the plumbing issue.

15

What is your payment schedule, and what forms of payment do you accept?

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Why this works

Establishes payment terms and ensures you understand when and how payment is expected.

16

Do you offer any guarantees or service agreements after the work is completed?

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Why this works

Shows their commitment to customer satisfaction and ongoing support if issues arise.

17

What happens if I'm not satisfied with the work or if something goes wrong?

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Why this works

Establishes recourse options and shows their commitment to making things right.

18

Are you familiar with local building codes and plumbing regulations?

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Why this works

Ensures they understand local requirements and will complete work that passes inspection.

19

What maintenance or care will be required after the work is completed?

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Why this works

Helps you understand ongoing responsibilities for keeping the plumbing in good working order.

20

Can you provide a written contract detailing all the work, costs, and timelines?

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Why this works

Ensures all agreements are documented and protects both parties from misunderstandings.

Best Practices for Plumber Interview Conversations

Expert tips and techniques for getting the most out of these questions.

Best Practices

Get Multiple Quotes

Interview at least 2-3 plumbers and compare their estimates, experience, and professionalism before deciding.

Check Credentials Thoroughly

Verify licenses, insurance, and references before hiring any plumber to protect yourself and ensure quality work.

Get Everything in Writing

Insist on detailed written estimates and contracts that specify all work, materials, costs, and timelines.

Question Sequences

The Credentials Check

1
Are you licensed and insured?
2
How many years of experience do you have?
3
Can you provide references?
4
Are you familiar with local building codes?

The Project Planning

1
What is your diagnosis of the problem?
2
What is your estimated timeline?
3
What is your pricing structure?
4
What warranties do you offer?

Common Pitfalls

Don't Choose Based Solely on Price

The lowest bid isn't always the best value. Consider experience, quality, and reputation along with cost.

Don't Pay Everything Upfront

Establish a payment schedule tied to completion milestones, never paying the full amount before work is done.

Don't Skip the Written Contract

Always use a detailed written contract that protects both parties and specifies all terms and conditions.

Conversation Templates

The Plumber Vetting

1
Step 1: Start with: "Before we discuss the work, can you confirm that you're licensed and insured?"
2
Step 2: Follow with: "What's your experience with this type of plumbing problem?"
3
Step 3: Deepen with: "Can you walk me through your diagnosis and recommended solution?"

Further Reading

"Black & Decker The Complete Guide to Plumbing" by Editors of Cool Springs Press
"Plumbing 1-2-3" by The Home Depot
"Home Plumbing" by Better Homes and Gardens

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