A site grading job that goes sideways—poor drainage design, equipment damage, or missed deadlines—can cost you thousands in remediation and delay your entire project. Knowing how to address contractor underperformance quickly separates a salvaged job from a financial disaster. Here's how to document issues, escalate them, and recover what you're owed.
Document Everything from Day One
The moment work begins, start a daily log with photos, timestamps, and notes on what was completed versus what was promised. Most excavation contracts specify grading depths, fill materials, compaction standards, and site cleanup—measurable deliverables that are easy to dispute later if ignored.
Take photos of the site from the same angles every few days. If your contractor was supposed to remove 18 inches of topsoil and haul it off-site, but instead left piles scattered across your property, that's visual proof. Email these photos to your contractor with a brief note: "As discussed, the excavation at the west corner doesn't match our agreement. Please correct by [specific date]."
Send a Formal Notice Before Escalating
Don't jump straight to a lawyer. Most underperformance issues stem from miscommunication or budget shortcuts, not intentional fraud. Send a written notice (email or certified letter) detailing:
- What was promised in the original contract or quote
- Specific ways the work falls short (measurements, timeline, material quality)
- A deadline to fix it (typically 5–10 business days for excavation work)
- A reasonable remedy: rework, credit, or partial refund
Keep the tone professional and factual. Example: "The site was graded to 24 inches instead of the contracted 18 inches. This affects drainage toward the storm drain. Please regrade by Friday, March 15th, or we will hire another contractor to complete the work and deduct costs from final payment."
Review Your Contract for Penalty and Hold-Back Clauses
Most solid excavation contracts include provisions for:
- Retainage: 5–10% of the total cost held back until final inspection and sign-off
- Liquidated damages: a per-day fee if the job extends beyond the agreed completion date (typically $200–500/day for site work)
- Performance bonds: a guarantee from a third party that the contractor will complete the work or reimburse you
If your contract lacks these protections, you have less legal leverage but can still demand corrections or partial payment refusal.
Know When to Withhold Payment
Don't pay the final invoice until the work meets your original specifications. For excavation, "completion" usually means:
- Proper grading and drainage established
- Erosion control measures in place (silt fencing, sediment traps)
- Site cleaned of excess material and debris
- Compaction tests passed (if required by local code)
If your contractor submits a final bill but skipped compaction or left material on neighboring property, you're justified in withholding 15–25% until corrections are made. Document your reason in writing.
Hire a Second Contractor for Corrective Work
If your excavator refuses to fix the problem or disappears, get competitive quotes from other contractors to correct the work. A rough grading correction might cost $2,000–$6,000 depending on site size and complexity. Photograph the corrective work carefully and invoice your original contractor for the full cost.
Small claims court (typically for disputes under $5,000–$10,000, depending on your state) is an option if the contractor won't pay. Bring your original contract, photos, email correspondence, and quotes for corrective work.
Report Serious Issues to Your Local Authority
If the contractor damaged utility lines, violated grading permits, or created unsafe conditions, report it to your local building inspector or code enforcement. This creates an official record and can pressure the contractor to comply without further legal action.
Work with a Trusted Provider Network
Finding reliable excavation contractors upfront saves the headache of disputes later. Platforms like Mercoly let you compare local excavators, read verified reviews, and see past project photos before hiring—reducing the odds of underperformance in the first place.
Frequently Asked Questions
Q: Can I withhold full payment if the contractor's work is only 80% correct? A: No—withhold only the percentage that matches the incomplete or faulty work. Withholding more than 20–25% may give the contractor legal grounds to sue you for non-payment.
Q: What if my excavation contractor damages my neighbor's fence during the job? A: The contractor's liability insurance should cover it. Require proof of a current policy ($1M+ general liability) before work starts, and notify your neighbor so they can file a claim if needed.
Q: How do I know if the fill material compacted correctly? A: Ask your contractor or engineer for a compaction report showing test results. Proper excavation typically requires 95% Standard Proctor density. If no report exists and compaction matters for your foundation, hire a soil engineer to test—expect $800–$1,500.
Compare and hire trusted excavation contractors on Mercoly to avoid these disputes before they start.