Where SWPPP and erosion control contractors lose money
5 things cost SWPPP and erosion control contractors money without ever becoming a line item, and each one traces to a step you can install. SWPPP and erosion control contractors average 24% gross margin, 14% overhead and 10% net profit at $1M–$5M of revenue. The CFOS target at that size is 26.5% gross margin, 13% overhead and 13.5% net, and the 3.5 points left on the table is where those mechanisms live. Figures for all 7 revenue bands are in the table below.
SWPPP and erosion control ranks 1st of 11 in civil and earthwork on net profit, and it has leaner overhead than the 48-trade average. Here is every figure, across all 7 revenue bands.
SWPPP and erosion control by revenue band
| Metric | $1M–$5M | $5M–$10M | $10M–$25M | $25M–$50MModeled | $50M–$100MModeled | $100M–$500MModeled | $500M+Modeled | CFOS target at $1M–$5M |
|---|---|---|---|---|---|---|---|---|
| Overhead | 14% | 13% | 12% | 11% | 10% | 9% | 8% | 13% |
| Gross margin | 24% | 26% | 27% | 29% | 30% | 32% | 34% | 26.5% |
| Net profit | 10% | 13% | 15% | 18% | 20% | 23% | 26% | 13.5% |
| Metric | $1M–$5M | $5M–$10M | $10M–$25M |
|---|---|---|---|
| Overhead | 13% | 12% | 11% |
| Gross margin | 26.5% | 28.5% | 29.5% |
| Net profit | 13.5% | 16.5% | 18.5% |
Modeled extension of the survey curve, not reconciled against the licensed CFMA Benchmarker. That applies to the 4 bands above $10M to $25M, and no CFOS target is published for them.
Gross margin and overhead come from CFMA, Jones Maresca and SPM's own trade data, because those are the figures those sources report by trade and size. Net profit is calculated from them as gross margin minus overhead, so the three rows tie. That makes it an operating profit figure: what is left before interest, other income and expense, and the tax planning choices owners make, such as bonuses, depreciation methods and retirement contributions.
Surveys report net income before taxes after those items, so a reported net can run below the figure here. At the typical contractor the difference is small: CFMA's 2025 medians are 7.1 percent before interest and taxes and 6.7 percent net income before taxes. It grows with size. Against the separate measured net profit dataset, the calculated net runs 0.8 points higher at $1M to $5M, 2.2 points at $5M to $10M and 3.5 points at $10M to $25M, because the gross margin and overhead rows change faster with size than reported net profit does.
Above the $10M to $25M band the gross margin and overhead rows are a modeled extension of the same curves. They have not been reconciled against the licensed CFMA Benchmarker, and the calculated net there runs well above survey medians, so read those bands as a model and not as a survey result.
Run On CFOS. Run On CFOS Trade Benchmark Reference: SWPPP and erosion control. 2026. Sulphur Prairie Operations, LLC. https://runoncfos.com/trades/swppp. CC BY 4.0.
Figures on this page were last revised 2026-08-21. Published under CC BY 4.0, which permits reuse of any figure here, including commercially, as long as the credit above travels with it. The same figures in machine-readable form: /benchmarks.json.
Trade level gross margin and overhead come from figures CFMA, Jones Maresca and other sources publish, and Run On CFOS derives net profit as gross margin minus overhead. The CFOS targets beside them are from the book CONTROL: C.F.O.S. Construction Financial Operating System, published with the full reference at runoncfos.com.
- 2024 Construction Financial Benchmarker, Executive Summary, Construction Financial Management Association, 2024.
- 2025 Construction Financial Benchmarker, Executive Summary, Construction Financial Management Association, 2025.
- 2025 Performance Benchmarks, Construction Companies, Jones Maresca and Company, 2025.
- Run On CFOS Trade Benchmark Reference, Sulphur Prairie Operations, LLC, 2026.
Sourcing and method: the methodology page.
Which bands are measured. The 4 bands above $10M–$25M extend the survey curve further out and have not been reconciled against the licensed CFMA Benchmarker. How every figure was built is explained on the methodology page.
5 problems specific to SWPPP and erosion control
The last pay app went out a year ago and the job is still spending money. It rains Tuesday night, the crew is out fixing fence Wednesday morning, and there's no pay item anywhere for that truck. Grading ran long, the fall window closed, and now you're paying for temporary cover and inspections all winter waiting on spring to seed. The GC wants fence in Monday, the NOI is still at the agency, and your crew has already been scheduled and released twice.
Each one below points at the item, the unit, the clock, or the party that makes it a SWPPP and erosion control problem, and it says which step fixes it.
| Mechanism | Why it's specific to this trade | Step |
|---|---|---|
| The job stops billing and keeps spending for a year | Every other trade on that site closes out at an inspection sign-off, which is a date a human being controls and can be argued about. Your scope closes when a plant hits a percentage of cover, and plants keep their own schedule. No other trade has a phase that runs a year past their last invoice, so no other trade's job cost structure ever had to account for one. | Job cost structure |
| Weather owns your repair schedule; the permit owns the clock | No other trade has a contractual repair deadline measured in business days off a rainfall event, running continuously from grubbing through NOT. A drywall crew that misses a Wednesday is behind schedule. You're out of compliance, and the notice of violation goes against the owner's permit, which is why you fund availability itself even though a bid form has no unit for it. | Overhead calculation |
| Miss the seeding window and you buy the job twice | Plenty of trades wait on long lead items, but a switchgear date can be paid to move and a soil temperature can't. Your long lead constraint is a calendar written by soil temperature and daylight, and it closes whether or not the GC finished grading. Germination can't be expedited. That's why a two-week grading slip on your scope turns into a season. | Project management |
| Your mobilization runs on a clock the engineer owns | Your mobilization commitment is promised against a permit clock held by the design engineer and a regulator, with the GC's dirt date in between and no contract between you and either party. Other subs get scheduled off a predecessor trade they can walk out and look at. You get scheduled off the status of a document, and the only outfit that eats a false start is the one with the trucks. | Project management |
| The reinstall has no pay item to bill against | No other trade on that job builds something other crews are expected to damage as a normal part of doing their work. A framer whose wall gets cut collects a backcharge because the damage is obvious, dated, and attributable to one crew. Yours happens in a trench line at 6 a.m. with no witness, so by the time the inspector walks it, the deficiency just looks like you didn't maintain your fence. | Standards and accountability |
SWPPP and erosion control against the other 47 trades
| Metric | SWPPP and erosion control | Civil and earthwork average | All 48 average | Rank |
|---|---|---|---|---|
| Overhead | 14% | 15% | 15.1% | 6th of 48 |
| Gross margin | 24% | 20.7% | 22.1% | 8th of 48 |
| Net profit | 10% | 5.7% | 7% | 1st of 48 |
SWPPP and erosion control sheds 6 points of overhead between $1M–$5M and $500M+, against 6.2 for civil and earthwork as a group. Inside that group, SWPPP and erosion control is the most profitable at 10%, and Civil, Excavation, Paving, 1 more all run 14% overhead, the leanest. This trade is one of them on both counts.
Other civil and earthwork trades
What owners ask
What overhead should a SWPPP and erosion control contractor run?
SWPPP and erosion control shares its overhead figure with 10 other trades at this revenue, which is what the published data resolves to. It averages 14% at $1M–$5M and 8% at $500M+, as a percentage of revenue. That is 1 point below the civil and earthwork average of 15%. The CFOS target at $1M–$5M is 13%. The CFOS target is one point leaner than your trade's industry average at your revenue.
What gross margin should a SWPPP and erosion control contractor run?
SWPPP and erosion control shares its gross margin figure with 4 other trades at this revenue, which is what the published data resolves to. It averages 24% at $1M–$5M and 34% at $500M+, as a percentage of revenue. That is 3.3 points above the civil and earthwork average of 20.7%. The CFOS target at $1M–$5M is 26.5%. The CFOS target recalculates at your revenue: whatever gross margin produces the net profit target once overhead is paid, never below your trade's own industry average.
What net profit should a SWPPP and erosion control contractor run?
SWPPP and erosion control runs 10% at $1M–$5M, before taxes, as a percentage of revenue, which ranks 1st of 48 and puts it in the top of the table. By $500M+ it reaches 26%. That is 4.3 points above the civil and earthwork average of 5.7%. The CFOS target at $1M–$5M is 13.5%. The CFOS target recalculates at your revenue: 10 percent before taxes, or 3.5 points better than your trade's industry average, whichever is higher.
What profit margin should a small SWPPP and erosion control business run?
Owners usually mean net profit when they say profit margin, and for SWPPP and erosion control at $1M–$5M that's 10%. Gross margin is a different number, 24%, and it's what's left after job costs but before overhead. Overhead is the 14% between the two. A small SWPPP and erosion control business holding 10% net is at the published figure for its size, and the CFOS target at that revenue is 13.5%.
Does SWPPP and erosion control get more profitable as it grows?
Overhead is the number that moves. SWPPP and erosion control sheds 6 points between $1M–$5M and $500M+, which is in line with the 6.2 points civil and earthwork sheds as a group. Net profit is already above the 48-trade average, so the room is in holding it while revenue climbs.
Where does SWPPP and erosion control rank against the other trades?
SWPPP and erosion control is 1st of 11 in civil and earthwork on net profit. It is the most profitable in the group. Its overhead is the leanest too, level with Civil, Excavation and Paving. Gross margin ranks 8th of 48 and overhead ranks 6th.
That's the industry average and the CFOS target for SWPPP and erosion control at every size. Want your own books set beside them? The Financial Health Snapshot builds a CEO Report from your last twelve months, sets every figure against your trade, and walks you through it on a 60 minute call. SPM The Construction CFO (Sulphur Prairie Management, LLC) is a separate firm, and the same author runs it.
Everything on this page is something you can install yourself, and CONTROL is the order to do it in. If you would rather buy the finished result, SPM The Construction CFO does this work for SWPPP and erosion control contractors as a service. It is a separate firm, Sulphur Prairie Management, LLC, run by the same author.
What a fractional CFO does for SWPPP and erosion control contractors
Wrote CONTROL, the 8 step system behind these figures. More about the author.