Apply for a POS Backflow Assembly Permit

Only licensed plumbing contractors or underground utility contractors (if applicable) can apply for a backflow assembly permit

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This is a stand-alone permit, also known as a sub-trade permit.


General Fees

  • State surcharge for building permits: 3% or $4 min.

Permit Fees

  • Backflow (general) $77 per backflow

Things To Consider

  • Licensed contractors can submit applications in person, by mail or fax
    • Homeowners cannot apply for backflow permits
  • Permits are valid for 180 days after we issue them
  • The permit will extend for an additional 180 days when you request an inspection and it passes
  • If this is not at point of service (POS) you must apply for a plumbing permit

How To

What's Next

  1. Staff will review the application, plans, if applicable, and any accompanying documentation
  2. We will notify you if any corrections are needed
  3. If no corrections, or corrections are completed satisfactorily, we will notify you when the permit is ready
  4. Walk-ins are normally done while you wait
  5. If a plan review is required (usually commercial permits) you must drop the application off
  6. Contractors
  7. Pay full permit costs in person or fax credit card information
  8. Submit your notice of commencement (NOC) (if applicable)
    • an inspection cannot be scheduled unless a recorded and certified NOC is submitted to Building Services
  9. Schedule inspections

Get Help

(813) 272-5600

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