A quality sprinkler system keeps your lawn green without wasting water or your time—but only if it's installed correctly from the start. Poor installation leads to dry spots, runoff, broken lines, and inflated water bills. Knowing what to look for in a contractor saves you thousands in repairs and frustration down the road.
Check Licensing and Insurance First
Before asking anything else, confirm the contractor holds a valid irrigation license in your state. Requirements vary: some states require certification for anyone designing or installing systems, while others have looser rules. Call your local licensing board or check the contractor's website for proof.
Liability insurance and workers' compensation coverage are non-negotiable. If a contractor damages your underground utilities or gets injured on your property, you're legally exposed without this protection. Ask for a copy of their current certificate of insurance and verify it directly with the insurer.
Evaluate Site Assessment and Design
A good contractor always visits your property before quoting. They should walk the yard, note sun exposure, soil type, slope, and existing obstacles like trees and structures. If someone gives you a price over the phone without seeing your space, walk away.
During the assessment, they should discuss your lawn's actual water needs—not just install the biggest system. Ask whether they'll:
- Test your water pressure (typically 40–80 PSI is ideal for residential systems)
- Map irrigation zones based on plant type and sun exposure
- Account for runoff or low spots where water pools
- Design around mature trees and shrubs that need less water
A detailed written proposal should include zone breakdown, head type and spacing, controller type, and material costs. Vague proposals often hide problems later.
Review Equipment Selection and Materials
Sprinkler heads and valves vary widely in quality and price. Mid-range contractors typically install spray heads ($3–$8 each) and rotary heads ($10–$20 each); cheaper systems use low-quality plastic that fails within 3–5 years.
Ask your contractor:
- What brand of controller and valves they use (Rainbird, Hunter, and Orbit are common mid-to-premium options)
- Whether they install pressure-reducing valves to prevent line burst
- If backflow prevention is included (often required by code in areas with reclaimed water)
- What type of irrigation timer—smart WiFi-enabled controllers ($200–$400) adjust based on weather, while basic timers run $50–$150
Clarify warranty terms: parts typically carry 1–2 years, while labor often has no warranty at all. Premium contractors may offer longer coverage.
Confirm Installation Timeline and Process
A typical residential sprinkler installation takes 2–5 days depending on yard size and complexity. The contractor should explain the order: layout marking, trenching, line installation, head placement, and final system testing.
Ask whether they'll:
- Mark utility lines before digging (most use call-before-you-dig services)
- Install a control valve and shutoff for winter drainage in colder climates
- Test the system with you present and adjust head spray patterns
- Provide written instructions for seasonal adjustments
Get this timeline in writing; surprises (hitting a large rock layer, underground pipes) happen, but you deserve notice before costs spike.
Pricing and Contract Terms
Residential sprinkler installation typically ranges from $2,000 to $8,000 depending on lot size, system complexity, and local labor costs. Urban areas and larger properties run higher. Get at least three written quotes; if one is drastically cheaper, ask why—cutting corners on design or materials is common.
A solid contract specifies materials, labor, timeline, payment schedule, and cleanup. Avoid contracts requiring full payment upfront; reasonable contractors ask for a deposit (25–50%) and final payment upon completion.
Find Vetted Contractors Efficiently
Comparing multiple contractors takes time. Platforms like Mercoly let you browse trusted irrigation and sprinkler service providers in your area, read verified reviews, and request quotes—all in one place rather than hunting through Google and calling around.
Frequently Asked Questions
Q: Do I need a permit for a new sprinkler system? Most jurisdictions require a permit for underground irrigation work, especially if it involves backflow prevention devices. Your contractor should handle this; if they never mention permits, ask directly.
Q: How often should sprinkler systems be serviced? Annual spring activation and fall winterization prevent line freezes and optimize performance; expect to pay $150–$300 per visit.
Q: What's the difference between spray heads and rotary heads? Spray heads cover small areas (5–15 feet) and work for flower beds and turf edges; rotary heads shoot water 15–40 feet and suit larger lawn patches. A good system uses both.
Ready to get started? Request quotes from vetted irrigation contractors in your area today.