Delaware

Site Plans & Permit Drawings in Delaware

Permit-ready site plans and drawings for properties in all 3 counties of Delaware, drafted from your address to your local permit office’s rules. No site visit.

  • 3 counties served
  • No site visit
  • Local rules checked
  • Licensed PE partner

Quick answer

Do You Need a Site Plan for a Permit in Delaware?

Yes, most building permits in Delaware need a site plan: a scaled drawing of the lot, existing buildings and the new work, with distances to the property lines. In Delaware, cities issue building permits inside their limits and the county issues them in unincorporated areas. Your address decides which office reviews your plans. We check that office’s requirements before quoting.

Reviewed by the MakeSitePlan drafting team · Updated October 2026

Permits issued by
City building departments; the county in unincorporated areas
Building code
Local adoption of the International Codes; editions vary by city and county
Counties
3 in Delaware, all served
Largest
New Castle County (579K), Sussex County (264K), Kent County (190K)
Site visit
None. We draft from parcel records, aerial imagery and your documents

Counties we serve

All 3 Delaware Counties

We prepare drawings for properties in every county in Delaware, and check the rules of the city or county that issues your permit.

3 counties

K

  • Kent County

N

  • New Castle County

S

  • Sussex County

Counties and population: U.S. Census Bureau, 2023 county population estimates.

Local conditions

What to Know About Permits in Delaware

What changes the drawings in Delaware. Exact numbers like setbacks and frost depth are set locally; we look them up for your address.

  • Who reviews your permitIn Delaware, cities issue building permits inside their limits and the county issues them in unincorporated areas. Your address decides which office reviews your plans.
  • Flood zonesCheck your parcel on FEMA’s Flood Map Service Center. In a mapped flood zone, permit offices in Delaware usually want the zone shown on the site plan, and some work needs an elevation certificate. FEMA flood map
  • Coastal wind and storm zonesCoastal parts of Delaware are in higher design wind-speed zones. Reviewers may ask for wind notes, tie-downs for sheds and carports, or flood elevation details near the shore.

Delaware FAQ

Permits in Delaware

Short answers to what people ask before ordering. Ask anything else in your quote request.

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Reviewed by the MakeSitePlan drafting team
Updated October 2026

Do you serve every county in Delaware?

Yes. We prepare drawings for properties in all 3 counties of Delaware, from New Castle County to Kent County.

Who issues building permits in Delaware?

In Delaware, cities issue building permits inside their limits and the county issues them in unincorporated areas. Your address decides which office reviews your plans.

Does Delaware have a statewide building code?

Not one single code for every address. Cities and counties in Delaware adopt editions of the International Codes, so the rules depend on where the property is.

Do you need to visit my property in Delaware?

No. We work from your address, county parcel records, aerial imagery and any survey, plans or photos you send.

Can you provide engineer-stamped plans in Delaware?

Our licensed Professional Engineer partner seals eligible plans in the states where they’re licensed. We confirm coverage for your project before you pay.

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