Hi, I’m Bob Carr. Over the years, I’ve seen thousands of drainage systems across Maryland and the Mid-Atlantic—some done right, some barely holding together, and others… well, let’s just say someone made a lot of money installing things that didn’t need to be there.
If you’ve gotten multiple quotes for drainage work at your home, you might be wondering: why do the prices vary so much? One company recommends a simple French drain, another wants to dig up your whole yard and install 300 feet of pipe. So which is right?
This guide will help you understand whether a contractor is overbuilding or underbuilding your drainage system—and how to protect yourself from both.
Let’s Start with Overbuilding: When You’re Paying for More Than You Need
Overbuilding a drainage system is like putting an elevator in a two-story house. It works—but it’s way more than what’s needed. Some signs a contractor may be overbuilding include:
1. They’re solving problems you don’t have
If your wet spot is in one corner of the yard, but the plan includes drains on all four sides, ask why. Good drainage design follows the water—it doesn’t try to solve imaginary problems.
2. They recommend high-end materials where standard will do
Not every home needs commercial-grade catch basins or 10-inch pipes. In most cases, 4-inch SDR-35 pipe is more than sufficient for residential yards in Maryland.
3. They insist on total yard excavation without testing spot fixes
Sometimes a simple downspout extension or minor grading fix can solve 80% of the problem. A good contractor explores those options before jumping to full excavation.
4. They can’t clearly explain why each part is necessary
Ask: What’s the job of this basin? Why does water need to go here? If the contractor can’t walk you through the logic, they may be upselling, not solving.
5. They push expensive “extras” without added value
Watch out for contractors recommending things like decorative channel drains or unnecessary sump pumps just to inflate the price. Every component should serve a specific, functional purpose.
Now Let’s Talk About Underbuilding: When the Fix Falls Short
While overbuilding costs you more upfront, underbuilding can cost you more in the long run—especially if it leads to water in your basement, rotted joists, or soil erosion.
1. They downplay the issue
“It’s just a little water, no big deal.” That’s a red flag. Persistent water—even in small amounts—can lead to serious damage. If you’ve got standing water for more than 48 hours, it’s a problem.
2. They skip catch basins or leave out pop-up emitters
If your water has nowhere to go, gravity isn’t going to magically pull it uphill. Systems need both collection points (like catch basins) and release points (like emitters or outfall drains).
3. They install too little pipe or too small a diameter
We’ve seen it too many times: a 3-inch pipe trying to handle what a 6-inch should. Or 20 feet of pipe on a yard that really needed 80. Water will always take the path of least resistance—don’t let that path be your foundation.
4. They don’t account for Maryland’s soil types
Here in Maryland, clay-heavy soils hold water differently than sandy soils. A drainage plan that works in one zip code might fail miserably in another. Your contractor should be thinking locally.
5. They avoid addressing grading or slope
Sometimes a contractor will focus too much on piping and ignore the bigger issue: slope. If your yard slopes toward your house, even the best drain in the world won’t help without grading correction.
Questions Every Maryland Homeowner Should Ask Before Approving Drainage Work
- What specific water problem are we solving?
- What will happen if we don’t install this piece?
- How is water being collected, moved, and released?
- How does this plan match the slope and soil of my property?
- Can I see photos or videos of similar work you’ve done nearby?
- How long do you expect this system to last before maintenance is required?
- What kind of warranty comes with this work?
- Is this system designed to meet county or HOA guidelines?
What a Balanced Drainage System Looks Like
The best drainage systems strike a balance between efficiency and durability:
- They follow the natural path of water, using gravity wherever possible.
- They use appropriately sized pipe based on the amount of water and size of the catchment area.
- They include gravel beds, filter fabric, and cleanout access points to ensure long-term performance.
- They’re designed with maintenance in mind, meaning you won’t need to dig up the yard in five years.
- They stay flexible, meaning the design can adjust if something changes—like a new shed, deck, or patio.
At TLC, we think of drainage systems as working machines. You wouldn’t install a furnace without thinking about ductwork or airflow. You shouldn’t install drains without thinking about where the water wants to go and how to get it there naturally.
Bonus: How Much Should Drainage Work Cost?
We get this question every day. Here’s a general breakdown for homeowners in Maryland:
- Minor Fixes (Downspouts, pop-up emitters): $500–$1,500
- Localized French drains or catch basins: $2,000–$5,000
- Moderate systems (multiple drains, rerouting water): $5,000–$9,000
- Full yard systems with grading and hardscape adjustments: $10,000–$20,000+
Cost depends on access, property size, obstacles (like tree roots or utilities), and finish materials. Don’t be afraid to ask for itemized estimates. A good contractor will walk you through every line.
Final Word from Bob Carr
At TLC Incorporated, we believe drainage systems should be built just right—not over the top, and not cutting corners. Our team always starts with a simple question: “Where is the water going—and where should it go?”
From there, we build a solution that’s custom to your home, your yard, and your goals. If you’ve got drainage concerns or just want a second opinion on a plan you’ve been given, we’re here to help.
You don’t need to be a drainage expert. You just need someone who can walk your property, ask the right questions, and give you honest answers.
We’ve helped thousands of Maryland homeowners make smart drainage decisions. Let’s make yours next.