Marine Contractor Financial Benchmarks
Healthy marine general contractors target the same core numbers as any commercial subcontractor: 22 to 30% gross profit per project, 12% net profit, and 9 to 13% overhead. But marine work carries cost structures most benchmarks don't account for: mobilization and demobilization on every project, multi-state crews, and project durations long enough that WIP reporting errors compound for months before anyone notices. A $13.5M marine GC took net profit from 7% to 14% on the same revenue just by building real job costing, and a $25M marine GC built financial infrastructure from zero and has kept over $1.2M in the bank ever since.
Marine general contracting looks like heavy civil work on the surface, but the cost structure is different in ways that quietly eat margin. Every project carries mobilization and demobilization costs that don't exist on a typical land-based job. Crews travel and often work across state lines. Projects run longer, which means more months for a job costing error to compound before it shows up on the bottom line.
| METRIC | HEALTHY TARGET | WHAT WE SEE MOST OFTEN |
|---|---|---|
| Gross profit per project | 22–30% | Diluted by unbudgeted mobilization/demob costs |
| Net profit | 12% | 7–9% before real job costing is in place |
| Overhead | 9–13% | Often understated; multi-state travel and PM time get buried |
| Cash in the bank | $650K+ | Highly volatile without WIP discipline |
Case: $13.5M Marine GC, 7% to 14% Net Profit
The owner wasn't in trouble. His crews were experienced, his GC relationships were strong, and work kept coming in. But he wanted to sell the business, and when he looked at what it was actually worth, the number wasn't there. Four accounting staff, no job costing, no per-project reporting. A buyer doesn't pay for revenue. They pay for provable, sustainable profit.
We built the job costing structure, tightened spending that had never been scrutinized, and put a clean twice-monthly reporting system in place for every job. Net profit went from 7% to 14% on the same revenue, recovering $917,000 a year that was already inside the business.
At 7% net with disorganized books, the business was worth $2.3M at a 2.5x multiple. At 14% net with nine months of clean documented profitability, it was worth $5.5M at a 3x multiple. Same revenue. Same crews. Same work. $3.2M more in business value from visibility alone.
Case: $25M Marine GC, Financial Infrastructure From Zero
This company came to us with no job costing and no WIP reporting at the project level. We built the entire financial infrastructure from the ground up. Since then, the bank balance has never dropped below $1.2M. The business has generated over $1M in net profit and paid out $2.6M in profit sharing to the team.
Why WIP Reporting Matters More Here
On a long-duration marine project, a job costing mistake in month two doesn't show up until month eight if nobody is reviewing work-in-progress reports monthly. By then it's not a correction, it's a crisis. The monthly cadence matters more for marine GCs than almost any other trade cluster because of how much time passes between when a mistake happens and when it becomes visible without a system watching for it.
What's a healthy net profit margin for a marine general contractor?
Target 12% net profit, the same benchmark as other commercial subcontractors. Most marine GCs without real job costing run closer to 7 to 9% and don't know it.
Why is overhead higher for marine general contractors?
Mobilization, demobilization, and multi-state crew travel add real costs that don't exist on typical land-based projects, and they're often buried in job costs instead of tracked as their own category.
How does WIP reporting work for marine construction?
Work-in-progress reporting tracks percent complete against budget on a monthly cadence so cost overruns surface within weeks instead of months. On long-duration marine projects, this matters more because errors compound longer before anyone notices.
What's a realistic valuation multiple for a marine contracting business?
In one case, a marine GC went from a 2.5x multiple on disorganized financials to a 3x multiple after nine months of clean, documented profitability, on the same revenue and crews.
Former commercial construction project manager and master electrician. Managed 150+ projects totaling $2.1B+ — Google data centers, military bases, hospitals, and high-rises. CONTROL is built on what actually works in the field.
Josh founded Sulphur Prairie Management (The Construction CFO) to be the fractional CFO for commercial subcontractors.