2026 GUIDE • WASHINGTON DC

How much does an excavation permit cost in Washington DC in 2026

Most contractors and property owners in Washington DC pay $300 – $1,200 for an excavation permit in 2026, driven by declared construction value, whether the work touches public space, plan review, and the District’s percentage surcharges.

Excavation permits cover digging — for foundations, utilities, or service connections — and the DC Department of Buildings (DOB) issues the construction permit while public-space excavation inside the right-of-way pulls in the transportation agency as well. That two-agency overlap is the biggest cost and time variable. The permit fee math itself still follows the same layered formula. Here is the realistic range.

Cost breakdown (2026)

Fee component	Typical 2026 cost
Filing fee	$32
Base permit fee (tiered by construction value)	$33 – $250
Excavation / site work permit fee	$150 – $550
Public-space / right-of-way permit (when applicable)	$100 – $400
Plan review (when required)	$75 – $250
Technology fee (10%)	~10% of permit fee
Enhancement fee (6%)	~6% of permit fee
Inspection	Included with permit
Typical total	$300 – $1,200

Excavation for foundations or utilities usually travels with grading and building permits — see grading permit costs and DC building permit costs for the companion filings.

Depth changes everything. A shallow trench for a residential service line is reviewed very differently from a deep excavation that needs shoring and a protection plan, and that difference shows up in both the review time and the declared value.

What affects the price

• Declared construction value. The dominant driver. A shallow utility trench declares little value; deep foundation excavation with sheeting declares far more, and the fee scales with it.
• Public space and right-of-way. Work inside the street or sidewalk adds a separate permit, restoration requirements, and inspection.
• Historic district review. Digging near historic properties or in historic districts can trigger additional review and documentation.
• Expedited processing. DOB expedites review for a fee — worth it when a construction schedule is tight.
• Agency add-ons. Utility coordination, zoning sign-offs, and traffic-control requirements add separate costs.

How the fee is calculated

DOB layers the excavation permit rather than quoting a single number. Under the DOB fee schedule (2026):

1. Filing fee: roughly $32, charged up front.
2. Base permit fee: tiered by declared construction value — roughly $148 for the first $1,000 of value, then about $10 per additional $1,000. Minimum flat tiers for low-value work run around $33 – $65.
3. 10% technology fee: added on top of the permit fee.
4. 6% enhancement fee: also added on top.
5. Zoning fee: where a zoning review applies.

Site and excavation work carries a modest valuation-based fee on top of the building tier, and the public-space permit, where it applies, is charged separately — each subject to the same percentage surcharges. That is why the all-in cost for street-adjacent work runs higher. The core rule holds: fees scale with declared construction value.

Timeline & steps

1. Hire a licensed DC contractor and, where needed, a civil engineer for shoring and site plans.
2. File via CitizenAccess. Submit excavation plans, shoring details, and declared value through DOB’s portal.
3. Plan review: simple utility digs may clear in 1 – 2 weeks; deeper or public-space work typically takes 3 – 6 weeks.
4. Excavate and inspect: the contractor performs the work and schedules DOB, and any right-of-way, inspections.
5. Closeout: inspected, backfilled, and restored work closes the permit; open permits block occupancy and surface at sale.

Common mistakes

• Digging before the permit issues. Unpermitted excavation carries steep fines and immediate stop-work orders.
• Overlooking the public-space permit. Work in the right-of-way needs its own approval and restoration obligations.
• Skipping shoring or protection plans. Reviewers and inspectors expect them for deep digs.
• Leaving the permit open. An unclosed excavation permit complicates a sale or refinance.

FAQ

Is an excavation permit the same as a building permit?

No. Excavation is its own permit and is often required before or alongside a building permit. If the dig touches public space, a separate right-of-way permit also applies.

Is plan review required for excavation in DC?

Simple, shallow utility work may clear faster, but deep excavation, shoring, and public-space work are typically reviewed, adding cost and time.

Do the 10% technology fee and 6% enhancement fee apply?

Yes. Both surcharges apply on top of the base permit fee under the DOB fee schedule (2026), raising the effective total above the base permit figure.

How long does approval take?

Expect 1 – 6 weeks depending on depth, scope, and public-space involvement, plus inspections during construction.

Who can pull an excavation permit?

A licensed contractor or authorized agent files it. The owner signs as property owner; the licensed contractor is the applicant of record for the trade work.

Disclaimer

Figures on this page are 2026 estimates based on the DC Department of Buildings fee schedule. Fee schedules change; always verify current amounts with DOB directly or through the CitizenAccess portal before filing. This article is informational and is not legal or financial advice.

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DC Permit Cost Calculator (2026)

Base $200 + $0.75/sqft. Expedite x2.5. DCRA Source 2026.

Last Updated: Sep 2026 | Sources: DCRA | Reviewed

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DC Permit Cost Calculator (2026)

Base $200 + $0.75/sqft. Expedite x2.5. DCRA Source 2026.

Last Updated: Sep 2026 | Sources: DCRA | Reviewed

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DC Permit Cost Calculator (2026)

Base $200 + $0.75/sqft. Expedite x2.5. DCRA Source 2026.

Last Updated: Sep 2026 | Sources: DCRA | Reviewed

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DC Permit Cost Calculator (2026)

Base $200 + $0.75/sqft. Expedite x2.5. DCRA Source 2026.

Last Updated: Sep 2026 | Sources: DCRA | Reviewed