New construction projects represent a growing segment of the backflow testing market. Every new commercial building, multi-family development, and irrigation-equipped property requires backflow prevention devices — and initial testing before the building can receive its certificate of occupancy. Understanding the construction timeline and building strong relationships with general contractors can create a reliable pipeline of testing work.
When Backflow Devices Enter the Picture
Backflow prevention devices are typically installed during the rough plumbing phase, after the water service line is connected but before walls are closed. The timing varies by project type:
- Commercial buildings: During rough plumbing, often 60-70% through construction
- Multi-family residential: After main water line installation, before unit finish-out
- Single-family with irrigation: During landscape rough-in, near project completion
- Tenant improvements: During build-out, often on a tight timeline
Initial Test Requirements
Most jurisdictions require an initial backflow test within a specific timeframe after installation — typically before the building receives its certificate of occupancy. This initial test establishes the baseline for the device and confirms proper installation.
What Makes Initial Tests Different
Initial tests on new devices should pass easily — if a brand-new device fails, it indicates an installation problem rather than wear. Common issues include:
- Debris in the line from construction (pipe shavings, solder flux, dirt)
- Incorrect installation orientation (upside down or backwards)
- Missing components or shipping damage
- Improper pipe sizing creating excessive pressure drop
Working with General Contractors
General contractors control access to construction sites and scheduling. Building a relationship with GCs creates repeat business as they bring you onto every new project. Key tips for working with contractors:
Communication Is Everything
Respond quickly to scheduling requests — construction timelines are tight and delays cascade. Provide same-day or next-day reports so the GC can move forward with inspections. Be flexible with scheduling; construction sites don't follow 9-to-5 hours.
Understanding the Inspection Process
Your backflow test report is often one of several documents required for the building department's final inspection. The city inspector will verify that the device is installed per code, the test report is on file, and the results meet minimum standards. Coordinate with the plumbing contractor to ensure the device is accessible and the system is pressurized for your test.
Pricing for New Construction
New construction testing can be priced differently than annual retesting. Consider factors like travel to active construction sites (which may be in remote areas), waiting time for the plumber to pressurize the system, and the potential for multiple trips if the device isn't ready. Many testers charge a premium for new construction due to these variables.
For detailed pricing strategies, see our pricing guide.
Building a New Construction Pipeline
Monitor building permits in your service area to identify upcoming projects. Introduce yourself to plumbing contractors and GCs early in the project. Offer package pricing for multi-device projects (commercial buildings often have 5-20+ devices). Follow up after initial testing to secure the annual retesting contract.
Conclusion
New construction testing is a high-value, relationship-driven segment of the backflow testing market. Testers who build strong contractor relationships, respond quickly, and understand the construction process can create a steady stream of initial testing work that converts into long-term annual retesting contracts.
Frequently Asked Questions
Who is responsible for initial backflow testing — the contractor or the property owner?
Typically the general contractor or plumbing subcontractor arranges and pays for the initial test as part of the construction project. After the property is occupied, ongoing annual testing becomes the property owner's responsibility.
What if a new device fails its initial test?
A new device that fails initial testing likely has an installation issue. The plumbing contractor should correct the problem (flush the line, verify installation orientation, check for damaged components) and request a retest. Do not sign off on a failing device.
How do I find new construction projects in my area?
Monitor your local building department's permit records — most are available online. Join your local builders association or plumbing contractors association. Network with plumbing supply houses, as they often know which contractors are working on new projects.