DE

Delaware Construction Compliance Requirements

Everything general contractors need to know about lien law, prevailing wage, insurance, and OSHA compliance in Delaware.

Mechanics Lien Law

Delaware mechanics liens must be filed within 30 days of completion for subcontractors under 25 Del. C. 2702. The general contractor must file a Statement and Claim within 60 days. Delaware is considered a challenging state for subcontractor lien rights due to short deadlines.

Key Deadlines

30 days: Subcontractor lien filing deadline from completion
60 days: General contractor lien filing deadline
1 year: Lien enforcement deadline

Prevailing Wage Requirements

Delaware requires prevailing wages on public works projects over $500,000 under 29 Del. C. 6960. Delaware Department of Labor sets rates. Certified payroll required on applicable projects.

Insurance Requirements

Workers compensation required for all employers with 1+ employees. Minimum $1M general liability typical. Delaware has a competitive private insurance market with many national carriers.

OSHA & Safety Compliance

Delaware follows federal OSHA standards. No state OSHA plan. Delaware Department of Labor provides OSHA consultation services.

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Last reviewed: April 2026. This guide is for informational purposes only and does not constitute legal advice. Consult a qualified attorney for state-specific legal questions.