People who can read grade and water flow, do heavy excavation work, and want problem-solving trade work with strong per-job revenue
Installing a drain that does not actually solve the homeowner's water problem, leading to callbacks, refunds, and disputes when the basement floods again
Ranges reflect realistic outcomes across reported data — not best-case promises. See the full earnings breakdown below.
What this business actually is
A French drain and yard drainage business solves residential and commercial water problems — soggy yards, water pooling against foundations, wet basements, and erosion. Core work includes French drains (gravel-filled trenches with perforated pipe), surface and channel drains, downspout extensions and pop-up emitters, dry wells, swales and regrading, and sump and curtain drain systems. It is part excavation and part diagnosis: the value is in correctly identifying where water comes from and where it should go, not just digging a trench.
What you actually do — the daily reality
A typical job runs one to several days. You start by diagnosing the water source on site — tracing grade, downspouts, water table, and runoff patterns, often after rain. Then it is heavy work: trenching with a trencher or excavator, laying gravel and perforated pipe wrapped in filter fabric, connecting downspouts and catch basins, ensuring continuous fall toward a proper outlet, backfilling, and restoring the surface. Between jobs you assess sites, calculate materials and slope, quote, locate utilities before digging, and arrange equipment and material deliveries. Wet seasons drive demand and also dictate when you can dig.
Real startup costs — itemized
Every realistic cost, with low and high ranges. You can start near $3,000 by skipping what is optional, but a comfortable starting budget is closer to $30,000.
| Item | Low | High | Notes |
|---|---|---|---|
| Truck and dump trailer | $2,000 | $15,000 | |
| Trencher and/or mini excavator (rent or buy) | $400 | $12,000 | |
| Hand tools, levels, pipe tools, wet vac | $400 | $2,000 | |
| General liability insurance | $1,000 | $3,000 | Annual |
| Contractor license / bonding (where required) | $150 | $1,500 | |
| Business registration / LLC | $50 | $400 | |
| First-job material float (pipe, gravel, fabric, fittings) | $800 | $3,500 | |
| Website, photos, and estimating software | Free | $600 | Can skip at first |
| Realistic total to start | $3,000 | $30,000 | Minimum vs. comfortable budget |
Real earnings — an honest breakdown
Not best-case fantasies. Here is what beginners, experienced operators, and the top earners actually report — and what it took to get there.
A capable installer in year one with steady leads typically nets $3,500 to $7,000 per month in season, with swings driven by weather and equipment costs. Drainage jobs are high-ticket, so a single project can carry a slow week — and a misdiagnosed one can mean an unpaid redo.
Established installers with a small crew and reliable lead flow commonly net $7,000 to $13,000 per month in season. Whole-yard and foundation drainage projects frequently gross $3,000 to $15,000+, and a basic French drain run often gross several thousand dollars.
Operators with multiple crews, owned equipment, and a mix of residential drainage plus foundation/basement waterproofing tie-ins can gross $40,000 to $120,000+ per month seasonally. Reaching that requires equipment, trained crews, and the working capital to float material across simultaneous jobs.
Effective rate on a well-run job can be high, but counting diagnosis, quoting, equipment, material handling, and weather downtime, realistic blended rates for a solo-to-small operator run roughly $50 to $110 per hour.
Correct diagnosis and securing a real outlet for the water drive both profit and reputation. Underbidding, hidden utilities, hard digging conditions, and callbacks from drains that do not solve the problem are what turn strong revenue into losses.
How to actually start — step by step
- Weeks 1-2
Make sure you can actually diagnose water problems and read grade — work alongside an experienced drainage or excavation contractor first if needed. Learn the core systems (French drains, channel drains, dry wells, downspout management, regrading) and when each applies. Secure general liability insurance and any required license.
- Weeks 2-4
Set up utility-locate habits (call 811 before every dig) and decide whether to rent or buy a trencher and excavator. Define your offerings and build standard material lists so you can quote slope and footage accurately.
- Weeks 4-6
Do a demonstration job or document a thorough fix on your own property. Set pricing per linear foot plus diagnosis and outlet work, with contingencies for hard digging and utilities. Market through a Google Business Profile and referrals from landscapers, plumbers, and foundation companies, and close your first paid job.
- Months 2-4
Track material, equipment, and labor against estimates, and follow up after heavy rains to confirm fixes held. Add crew for trenching days and build relationships with material yards.
- Months 4-12
Build a portfolio of solved problems and a review base, refine diagnosis and bidding, and consider adding foundation waterproofing or sump systems as higher-value tie-ins.
What skills you actually need
Skills you must have before starting
- Ability to read grade, slope, and water flow and diagnose the real source of a water problem
- Excavation and trenching skill, including utility awareness
- Accurate estimating including soil conditions and outlet requirements
Skills you can learn as you go
- Sizing and laying perforated pipe, gravel, and filter fabric correctly
- Operating a trencher and mini excavator safely
- When to add dry wells, sump pumps, or regrading versus a simple drain
What separates average operators from high earners
- Diagnosing correctly and securing a real outlet so the water actually leaves and the fix lasts
- Bidding hard-dig and utility-heavy sites accurately with contingency
- Communicating clearly so customers understand what the drain will and will not solve
What most people get wrong
The common mistakes, the reasons people quit, and the things nobody warns you about.
- Installing a drain without solving where the water actually goes, so it backs up and the problem returns
- Failing to maintain continuous fall and slope, leaving standing water inside the pipe
- Skipping filter fabric or using the wrong gravel, so the drain silts up and clogs within a season
- Not calling 811 to locate utilities, risking strikes on gas, water, or electric lines
- Underbidding by ignoring hard clay, rock, roots, or poor access that slow trenching
- Overpromising a dry basement when the real fix needs grading, gutters, or foundation waterproofing too
Tools and equipment you need
What to buy cheap, where to invest, and what you can rent or borrow at first.
- Trencher $400 – $8,000
Cuts clean drain trenches far faster than hand digging; rent per job until volume justifies buying.
- Mini excavator or skid steer $500 – $12,000
For larger trenches, dry wells, and regrading; rent early in your growth.
- Laser or transit level $150 – $900
Verifying continuous fall toward the outlet is what makes a drain actually work.
- Pipe, fittings, gravel, and filter fabric $300 – $2,500
Core consumables per job; buy quality fabric to prevent silting.
- Dump trailer or truck $2,000 – $10,000
For hauling gravel and spoil; cuts costly material delivery and disposal fees.
- Wet vac, sump tools, and safety gear $200 – $1,200
For wet conditions, sump tie-ins, and trench and crew safety.
How to find customers
What actually works:
- Referrals from landscapers, plumbers, foundation, and basement waterproofing companies
- A Google Business Profile and portfolio site showing before/after of solved water problems
- Local Facebook groups and Nextdoor, especially active right after heavy rain
- Outreach to real estate agents and home inspectors who flag drainage issues in sales
- Yard signs at completed jobs in neighborhoods with shared drainage problems
Where your customers are: Homeowners with soggy yards, water against the foundation, or wet basements; properties on slopes or with poor original grading; and buyers or sellers whose inspections flagged water issues. Demand spikes during and right after wet seasons and storms.
How long it takes to build a client base: First jobs typically come within three to six weeks of marketing, and demand surges after heavy rain. A steady, referral-fed pipeline usually develops over four to eight months as solved problems get reviewed and recommended.
What is usually a waste of time: Broad untargeted advertising and competing purely on lowest price. Drainage is a problem-solving purchase, and the cheapest-bidder customers are the ones most likely to dispute the cost of a fix that actually works.
How this business scales
Can you grow it to full-time? Yes. High per-job revenue and weather-driven demand mean a skilled installer with steady leads reaches full-time income, limited mainly by season, crew, and equipment capacity.
Can you hire people and step back? Achievable with systems. Trenching and installation are teachable, but diagnosis is the high-value skill, so you either keep doing assessments yourself or train a capable lead. Quality control prevents callbacks across crews.
Can you sell it one day? A business with equipment, trained crew, a portfolio of solved problems, referral relationships, and documented diagnostic processes has solid resale value beyond just tools. The less it depends on your personal diagnosis, the more sellable it is.
What scaling actually requires: Owned or reliably available trenching and excavation equipment, trained crews, material-yard and trade-partner relationships, disciplined estimating, and working capital to float material across simultaneous jobs.
Is this right for you? An honest checklist
A strong fit if…
- You can read grade and water flow and enjoy diagnosing problems
- You can do or manage heavy excavation work and operate equipment
- You can bid high-ticket jobs accurately, including soil and utility factors
- You like solving a tangible problem customers genuinely need fixed
A poor fit if…
- You want light or part-time work around a job
- You are tempted to dig a trench without confirming where the water goes
- You lack excavation skill or access to needed equipment
- You are uncomfortable diagnosing problems or managing utility-strike risk
Before you start, ask yourself…
- Can I reliably diagnose the real water source and secure a proper outlet for it?
- Can I bid hard-dig and utility-heavy sites without losing money?
- Do I have the equipment plan and cash flow to run material-intensive excavation jobs?
Frequently asked questions
How is a French drain business different from plumbing or landscaping?
It overlaps both but focuses on moving unwanted water away from a property. Unlike interior plumbing, it deals with groundwater, surface runoff, and grading; unlike general landscaping, the core value is diagnosing water problems and engineering a solution with slope, pipe, and outlets. Many operators come from landscaping, excavation, or waterproofing backgrounds.
What is the most common reason a drainage job fails?
Not solving where the water actually goes. A drain only works if there is continuous fall to a real outlet — daylight, a dry well, or a storm system. Skipping filter fabric (which causes silting), losing slope, or treating only the symptom instead of fixing grading and downspouts are the other frequent failures.
Do I need a license to install French drains?
It varies by state and locality. Some areas require a contractor license above a job-value threshold, and tying into municipal storm systems or doing significant grading can require permits. You must also call 811 to locate utilities before digging anywhere. Confirm local licensing, permit, and tie-in rules before bidding.
How much can I charge for a French drain?
Pricing is commonly per linear foot plus diagnosis and outlet work, often ranging widely with depth, soil, and access. A basic French drain run frequently grosses several thousand dollars, while whole-yard or foundation drainage projects can run $3,000 to $15,000 or more. Soil conditions and the difficulty of reaching a good outlet drive the price.
Do I need heavy equipment to start?
You need a way to trench efficiently. A walk-behind trencher and, for larger work, a mini excavator are the defining tools; hand-digging long drains is impractical and unprofitable. Many start by renting equipment per job and buy once their volume justifies ownership and the rental fees stop making sense.
Is drainage work seasonal?
Demand is highly weather-driven, surging during and after wet seasons and storms when problems become obvious. At the same time, saturated or frozen ground can stop digging, so the busiest demand and the best working conditions do not always align. Many operators combine drainage with hardscaping or grading to smooth the calendar.
Can I promise a dry basement?
Be careful. Exterior drainage helps, but a wet basement often needs a combination of regrading, gutter and downspout management, French or curtain drains, and sometimes interior waterproofing and a sump pump. Promising a guaranteed dry basement from a single drain is how installers end up with callbacks and disputes. Diagnose the full picture and set honest expectations.
Data sources and research notes
Figures on this page reflect ranges reported across the sources below plus operator accounts. They are honest estimates, not guarantees — your results will vary.
- U.S. Bureau of Labor Statistics — Construction Laborers and Excavation trades wage and employment data
- Angi / HomeAdvisor — French Drain and Yard Drainage Cost Guides (reported per-foot and per-project pricing)
- Common Ground Alliance / 811 — utility-locate requirements and safe digging practices
- Drainage and excavation contractor communities (r/landscaping, contractor forums) for real-world bidding and earnings
Last reviewed: June 2026