A building permit in Dover is issued by the city's own Department of Planning and Inspections, which enforces the International Code Council's Building, Plumbing and Mechanical Codes through plan review and on-site inspection — so inside the city the permit is a city matter, and Kent County does not issue here.
Dover's distinctive requirement catches design teams rather than builders. As the city puts it in its own commercial-plans guidance, a design professional must carry an active City of Dover business licence in addition to the state licence before drawings are accepted — a local credential separate from the contractor's, and one that is easy to overlook until a submittal stalls at intake.
This guide covers the city of Dover, in Kent County. Work outside the city limits falls to Kent County or another municipality; confirm the address is inside the city before you file with Planning and Inspections.
The design professional's city licence is part of the submittal. Because Dover requires each design professional on the drawings to hold a City of Dover business licence alongside the state licence, the fastest way to lose a week is to file a commercial submittal before those local licences are in hand.
What requires a building permit in Dover?
Delaware has no statewide building code. Each county, and each town that runs its own building department, adopts and enforces its own, and the editions, amendments and effective dates differ between them — so a rule that applies in one part of Delaware may simply not apply 30 minutes away. New Castle County administers its code through the Department of Land Use, Kent County through its Department of Planning Services (Division of Inspection and Enforcement), and Sussex County through its Building Permit Office and Building Code Office, which also cover a number of incorporated towns that have not taken the function on themselves. Above them sit statewide rules: plumbing, mechanical, fuel gas, energy and fire codes set at state level, electrical inspection by a state-licensed agency, and the State Fire Marshal's plan review. So in Dover the questions are which authority holds the building code, which edition it is on, and whether every design professional on the project holds a City of Dover business licence, which the city requires on top of the state licence.
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- A City of Dover building permit from Planning and Inspections before construction, alteration or demolition
- The city fire marshal's plan review, carried out by Dover's jurisdictional fire marshal rather than the state office, on the work the fire code reaches
- A City of Dover business licence for the contractor and for each design professional whose drawings go on the application
- Electrical work under state regulation, inspected by a licensed electrical inspection agency
- Sediment and stormwater approval from the delegated agency, and DNREC permits where the site triggers them
- Any additional agency clearance a regulated occupancy requires before the city acts
Often exempt
- City fire marshal plan review on buildings used wholly as dwellings of no more than two families
- City fire marshal plan review on buildings used wholly for farming purposes, rare within the city
- Ordinary repairs the enforced code places below the permit threshold
- Small accessory work where the code's own exemption reaches it
- Like-for-like finishes that do not alter structure, egress or building systems
Which authority holds the code for your address
Dover runs its own Department of Planning and Inspections and, as one of Delaware's jurisdictional city fire marshals, its own fire marshal's plan review — and it adds a credential the surrounding county does not: a design professional whose drawings go on a Dover permit application must hold an active City of Dover business licence in addition to the state licence, or the submittal does not move.
Delaware has no statewide building code — each county and town that runs a building department adopts its own — but plumbing, mechanical, fuel gas, energy and fire codes are set at state level, electrical work is inspected by state-licensed agencies, and the State Fire Marshal reviews plans for most non-residential work. Delaware rules
Who handles permitting in Dover?
The city of Dover is served by the Department of Planning and Inspections at City Hall, which issues building permits, enforces the ICC Building, Plumbing and Mechanical Codes, and houses the city's jurisdictional fire marshal. Permit and inspection questions and the fire marshal reach the same city office.
Not sure this scope needs a permit?
Get a free quote →| Detail | Information |
|---|---|
| Authority | City of Dover Department of Planning and Inspections |
| Office | City Hall, 15 Loockerman Plaza, Dover, DE 19901 (mail: PO Box 475, Dover, DE 19903); Monday to Friday 8:30am to 5:00pm |
| Phone | (302) 736-7010 for permits and business licences; (302) 736-7196 for zoning; permitsandlicenses@doverde.gov |
| Fire review | City of Dover Fire Marshal's Office — a jurisdictional city fire marshal |
| Applies where | Inside the city of Dover; Kent County does not issue permits here |
In 2025, building permits issued in Dover authorized 239 new privately owned housing units, 63 of them single-family homes, according to the U.S. Census Bureau Building Permits Survey.
Permit types
Residential permits
Houses, additions, alterations, decks, garages and demolition inside the city are permitted through Planning and Inspections under the ICC codes the city enforces. The department reviews the application, issues the permit, and inspects the work in sequence before a certificate of occupancy closes the file.
Commercial permits
Commercial and multi-family work is reviewed under the city's enforced codes, and the city fire marshal — not the state office — carries out the fire plan review, because Dover is one of Delaware's jurisdictional city fire marshals. Design professionals on the drawings must each hold a City of Dover business licence, and certain regulated occupancies clear other agencies before the city acts.
The state reviews that run alongside the permit
In Dover the city operates its own jurisdictional fire marshal, so the plan review the State Fire Marshal performs in most of Delaware is carried out by the city.
Delaware has no general contractor licence: contractors need a state contractor business licence and Department of Labor registration, and electricians, plumbers, HVACR and fire protection contractors are licensed by the state. Delaware rules
Dover permit costs and fees
Dover scales its building permit to the project rather than quoting a flat figure, and confirms it at intake. The cost item particular to the city is not a permit line at all: it is the City of Dover business licence each design professional and contractor on the job must carry.
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Call 1-855-478-4290 →| Item | Fee or rule |
|---|---|
| Building permit | Set in Appendix F (Fees and Fines) of the city code (Sec. 22-65); new-construction valuation is checked against the current ICC valuation chart, and fees can double if work starts before the permit |
| City business licence | Required of the contractor and of each design professional on the drawings, on top of the state licence |
| Fire plan review | Charged by the city fire marshal on the work the fire code reaches |
| Where it is paid | Through the Department of Planning and Inspections at City Hall |
Budget the local licences, not just the permit. The City of Dover business licence for the contractor and for each design professional is a precondition of a moving submittal, so it belongs in the project's licensing budget from the outset rather than being discovered at the permit counter.
Trade permits and who may pull them
Permit required
- Electrical — by a licensed electrician, inspected by a licensed electrical inspection agency
- Plumbing — by a plumber licensed through the state Plumbing and HVACR board
- Fire protection — by a contractor licensed by the State Fire Marshal, whose licence number goes on the plan review
- Mechanical and fuel gas — under the statewide codes adopted by the state Plumbing and HVACR board, enforced by the county or town
Typically exempt
- Work the adopted code edition places below the permit threshold, which differs between the three counties
- Like-for-like replacement not amounting to a new installation
Electricians, plumbers and fire protection contractors hold state licences, and electrical inspection is carried out by licensed inspection agencies. Delaware rules
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County in unincorporated areas, the municipality where it runs a building department, and in some towns the county for building with the town for zoning.
The three counties are on different editions with different effective dates and amendments.
Required on new buildings, additions, changes of occupancy and fire damage, except two-family dwellings and farm buildings, and on sprinkler, alarm and fuel installations and tenant fit-outs.
Sediment and stormwater approval from the delegated agency (conservation district, county or city), and DNREC wetlands or beach approvals where the site needs them.
Many permit offices ask for the Delaware contractor business licence, contractors must be registered with the Department of Labor, and some municipalities require their own licence.
Footing to final with the authority, electrical through a licensed inspection agency, then the certificate of occupancy.
Review, corrections and what actually causes delay
The Dover delays that recur are credential delays: a design professional without the City of Dover business licence, a contractor licence not yet issued, or a regulated occupancy that still needs another agency's sign-off. Getting the local business licences in place before the submittal, and confirming which outside agencies a use triggers, keeps the Planning and Inspections review on track.
Inspections in Dover
Inspections follow the sequence in whichever code edition the authority has adopted — footing, foundation, framing, rough trades, insulation and final — requested from the county or the municipality against the permit number. Electrical inspections are the exception: they are carried out by licensed electrical inspection agencies, and their approval documentation is what the permitting authority and the State Fire Marshal rely on. A certificate of occupancy closes the file, and where the fire marshal reviewed the plans its own approval is a precondition of that certificate. In Dover the inspections run through Planning and Inspections against the permit number, the city fire marshal's approval is a precondition where its plan review applied, and a certificate of occupancy closes the file.
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Get a free quote →Dover permit search and official resources
- City of Dover Department of Planning and Inspections — how the city issues permits and enforces the ICC building, plumbing and mechanical codes
- Delaware's jurisdictional city fire marshals — confirming that Dover's own fire marshal, not the state office, reviews plans within the city
- Delaware State Fire Marshal, building plan submittals — what needs plan review, the fee formula and what must accompany a submission
- Delaware Code title 16, chapter 66 — the statutory plan review requirement and its exceptions
- Delaware Department of Natural Resources and Environmental Control — wetlands, subaqueous-lands and beach approvals, and the sediment and stormwater programme
Frequently asked questions
Does the city or Kent County issue my permit?
Inside the city of Dover, the Department of Planning and Inspections issues the permit and Kent County does not. The city runs its own building enforcement and its own fire marshal, so the process stays with the city.
What business licence do design professionals need?
Dover requires each design professional whose drawings go on a permit application to hold an active City of Dover business licence in addition to the state licence. It is separate from the contractor's licence and is checked at intake.
Inspections are where schedules slip.
Get a free quote →Who reviews my plans for fire?
Dover is one of Delaware's jurisdictional city fire marshals, so its own fire marshal carries out the plan review that the State Fire Marshal performs in most of the state. Permit and fire questions reach the same city office.
Which codes does the city enforce?
Chapter 22 of the city code, as re-enacted in June 2024, adopts the 2009 editions of the International Building, Residential, Existing Building, Mechanical, Plumbing and Fuel Gas Codes, with city amendments. The city’s commercial plans guidance asks for energy compliance with the 2018 International Energy Conservation Code and Delaware’s amendments. Confirm the edition with Planning and Inspections before you design to it.
Do I need a permit for a deck or shed?
Usually yes once the work passes the enforced code's threshold. The exemptions are narrow, so confirm the specific threshold with Planning and Inspections first, because an unpermitted structure can hold up a later sale.
Is electrical work inspected by the city?
No. Electrical work in Dover is regulated at state level and inspected by a licensed electrical inspection agency rather than by the city, and that agency's approval is what the city and the fire marshal rely on at closeout.
Simplify Dover permitting with Alliance Permitting
21+ years of working real jurisdictions is what tells you that Dover asks something of the design team, not just the builder: each design professional on the drawings needs a City of Dover business licence, and the city's own fire marshal — not the state office — reviews the plans. Our team gets those local licences settled before the submittal, confirms the fire review path with Planning and Inspections, files the package, and tracks it to a certificate — corrections included.
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Send us the scope and the parcel. We confirm the review path with the City of Dover Department of Planning and Inspections, assemble the submittal, file it, and track it through issuance — corrections included.
More Delaware permitting guides
More Delaware permitting guides
This guide is provided by Alliance Permitting for general information about Dover permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.