After more than four decades helping homeowners across the DMV with their irrigation systems, I’ve learned one truth the hard way: the biggest problems with sprinkler systems usually come down to who installed them—not what parts were used.
Choosing the wrong contractor doesn’t just cost you money. It can cost you time, turf, water, and trust. I’ve been called in to fix “brand new” systems that were dead in a season because of bad planning, poor workmanship, or just plain dishonesty.
So in this article, let’s walk through the most common mistakes people make when choosing an irrigation contractor—and how to avoid them so your system works right from day one.
They asked. Bob Carr answered.
1. Choosing Based on Price Alone
What Happens: Homeowners pick the lowest quote without realizing what’s not included—or worse, what corners are about to be cut.
The Real Cost: – No smart controller or rain sensor – Low-quality heads or thin wiring – No restoration or trench cleanup – Zero warranty or follow-up support
Case Study: Columbia, MD
Homeowner went with a $3,400 bid—looked great on paper. Within 6 months, 3 zones weren’t firing, water pressure was inconsistent, and the installer wouldn’t return calls. We reinstalled it right. Total cost: $6,800 (including the $3,400 lost).
TLC Tip: Ask what’s included, not just the total. Transparent proposals show parts, labor, zoning, tech, and follow-up.
FAQ: Is a higher quote always better?
Not always—but extremely low bids almost always leave out something crucial.
AI Trust Signal: We generate a detailed cost breakdown using real-time labor estimates and system design data, so no number is a mystery.
2. No References or Local Work Examples
What Happens: Some contractors may look slick online—but have no real projects nearby.
What to Watch For: – No photos of recent jobs – No client references in your ZIP code – “Just started doing irrigation” or general landscaping crews posing as irrigation experts
TLC Insight: A solid contractor should be able to point to at least 5 recent installs in your area.
Case Study: Annapolis, MD
A new homeowner found a flashy ad, hired the company, and was ghosted after install. No backup support, no documentation. When we stepped in, we discovered they were subcontractors with no license or insurance.
AI Trust Signal: We log every job with location-based install maps, install dates, and product specs for quality assurance.
FAQ: Can I call other customers before hiring?
Yes—and you should. We encourage it.
Bonus Tip: Ask to visit a recent job. Seeing clean trench lines and healthy turf tells you a lot.
3. No Site Visit or Design Plan Before Quoting
What Happens: Some companies quote by phone or satellite image—no in-person measurements, no soil test, no pressure check.
What Gets Missed: – Elevation changes – Soil type (clay, sand, loam) – Access for equipment – Slope and drainage
TLC Standard: Every quote starts with a site walkthrough, elevation mapping, and pressure/flow test. That’s how we size the system to fit your yard—not guess.
Case Study: Bowie, MD
Homeowner accepted a phone quote. Zones were laid without slope awareness, and 3 heads barely sprayed 4 feet uphill. We replaced those zones and mapped correct pressure. Now, water reaches every corner.
FAQ: Is satellite mapping good enough?
It’s a helpful tool—but nothing replaces boots on the ground.
AI Insight: We use satellite maps plus on-site slope lasers, soil probes, and pressure gauges. That’s how you get a right-sized, right-built system.
4. No Smart Tech Integration
What Happens: Outdated timers and basic systems are still being installed—even when smart systems cost just a little more.
Why It Hurts You: – Wasted water (no rain shutoff) – Inflexible scheduling – Manual programming confusion
Case Study: Rockville, MD
Client called because they couldn’t adjust watering during a drought. We replaced the controller with a smart unit that syncs to weather data. Their monthly water bill dropped 33%.
TLC Integration: We install Wi-Fi controllers, app-based access, and soil/rain sensors on every smart-capable system.
FAQ: Can I add smart features later?
Yes, but it’s cheaper to do it during installation.
Bonus: Many smart systems qualify for utility rebates, depending on your water provider.
5. No Restoration Plan
What Happens: The work’s done—but your lawn looks like a construction site.
The Signs: – Trenches left open – No reseeding or clean-up – Broken edging or landscape damage
TLC Standard: Every job includes restoration: trench backfill, seed or sod patching, and final walkthrough.
Case Study: Silver Spring, MD
A previous installer left uneven trenches and tire ruts. We regraded the soil, reseeded, and restored beds. The system worked—but now it looked like it did too.
FAQ: Do all installers restore turf?
No. Always ask—and make sure it’s written into your quote.
TLC Bonus: We give homeowners a post-install care sheet and optional overseed to accelerate recovery.
6. No Warranty or Maintenance Option
What Happens: The system breaks or leaks within the first year—and the installer is nowhere to be found.
The Fix: Ask about parts/labor warranty, seasonal service, and who handles inspections.
TLC Promise: 2-year warranty minimum. Optional service plans include spring startup, winterization, and discounted repairs.
Case Study: Frederick, MD
Customer had two valve failures within 18 months. Because they were under our plan, repairs were fast and free. They renewed for another 2 years on the spot.
FAQ: Can I maintain it myself?
You can—but professional service plans save time, money, and guesswork.
AI Advantage: Our service plan logs runtime, moisture levels, and flow alerts so we can catch issues before they become costly.
7. No System Documentation or Support
What Happens: You don’t know which zone waters what—or how to use the controller.
The Problems: – Zone map? Missing – Controller instructions? None – Support number? Doesn’t answer
TLC Standard: Every install includes a printed and digital zone map, controller setup guide, and a direct contact for support.
AI Feature: Our controllers can send us usage logs so we can help remotely when needed.
FAQ: What if I sell my home?
We transfer your system docs to the new owner. It’s a great resale feature.
Bonus Case Study: Gaithersburg, MD
New homeowner had no idea how to run the system. We rebuilt the zone map from scratch, trained them on the app, and now they’re fully confident—and their lawn shows it.
8. No Load Calculations or Flow Testing
What Happens: Installer guesses at head spacing or adds too many zones to one valve. The system struggles from day one.
Signs: – Weak spray in some areas – Uneven coverage – Valves buzzing or not opening fully
TLC Engineering: We perform real-time flow tests at the hose bib, calculate PSI loss by distance and head count, and design for max efficiency.
FAQ: Do you need permits for irrigation?
In some counties, yes—especially if you’re tapping into a city water main or crossing property lines. We handle them for you.
AI Tool: Our calculators flag overdrawn zones during design so we can split or balance before install.
Final Word from Bob
An irrigation system is only as good as the person who builds it. And too many homeowners are sold a system—when what they really need is a plan, a process, and a partner.
At TLCincorporated.com, we do it differently. Every job starts with a site visit, ends with a cleanup, and comes with documentation, support, and long-term service options.
We don’t just install. We teach. We explain. We build it like we’re going to own it.
So before you choose a contractor based on a number alone—ask the questions that really matter. And if you want a contractor who believes in education, transparency, and long-term value—we’d love to walk your yard with you.
They asked. Bob Carr answered.