State deadline reference

District of Columbia Lien Deadlines for Material Suppliers

Use this District of Columbia guide to check preliminary notice, lien filing, and enforcement timing before a receivable becomes unprotected.

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District of Columbia deadline risk

Missing a District of Columbia notice or lien filing deadline can eliminate lien rights. Run the calculator early and verify close calls.

Deadline Type	Timing	Details
Preliminary notice	90 days after last work for subs/suppliers	Notice rules can depend on role, project type, and contract chain. Send notices early when in doubt.
Mechanics lien filing	90 days after last work	Use this as a planning estimate and verify the filing trigger.
Enforcement	6 months after filing lien	Filing a lien is not the final step. Track enforcement deadlines separately.

Run the deadline check when materials are furnished, not when collections already become urgent.

Preliminary notice rules can change by role and project type. Treat the notice path as a required workflow check.

Use the calculator for operational tracking, then verify high-value or disputed claims with counsel.

Use the calculator with your invoice date to estimate the District of Columbia deadline.

Select District of Columbia in the calculator to get a date-specific result.

90 days after last work

90 days after last work for subs/suppliers

No. This guide is a deadline reference for construction finance workflows. Verify critical filing decisions with licensed counsel.

This guide is for informational purposes only and does not constitute legal advice.