Assess the Plumber's Credentials and Certifications
Check Reviews and Testimonials from Previous Customers
Verify Insurance Coverage for Potential Damages or Accidents
Inquire About Warranties and Guarantees on Workmanship
Discuss the Scope of Work and Detailed Estimates Upfront
Ensure Clear Communication Regarding Project Timelines
Request References for Similar Projects in San Jose, CA
Follow Up on the Quality of Work Post-Completion
How to Upgrade Your Bathroom Plumbing with a Pro in San Jose .