A building permit in Sussex County is issued by the county’s Building Permit Office in Georgetown, and the county’s Building Code Office enforces the building code under Chapter 52 — plan review and inspections — across the unincorporated county and for 14 incorporated towns. A county building permit is needed for all construction anywhere in Sussex, even inside a town that issues its own permit.
Sussex writes its own amendments into the model code, and two of them shape everyday projects: a carport under 400 square feet is permitted but excluded from inspection, and a farm building used in farming is exempt from the building-code construction provisions yet still takes a permit for assessment purposes, so it lands on the record either way.
This guide covers unincorporated Sussex County and the incorporated towns the Building Code Office enforces for. Towns that run their own departments issue their own permits and inspect the work, but the county building permit is still required there; confirm which applies to the address before you file.
The 2024 energy code applies from 11 April 2027. From 11 April 2027 Sussex County requires new homes, conditioned residential additions and accessory structures, and commercial buildings to meet the 2024 energy code, and the county’s notice says plans submitted after 10 April 2026 must already be designed to it, with an energy compliance report such as a REScheck or COMcheck.
What requires a building permit in Sussex County?
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 Sussex County the questions are which authority holds the building code, which edition it is on, and whether the parcel sits in the unincorporated county or in one of the 14 towns the Building Code Office also serves.
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- A building permit from the Sussex County Building Code Office for construction, additions, remodelling and alterations
- An assessment-purpose permit even for a farm building that is otherwise exempt from the construction provisions
- A building permit from the county or the municipality, depending on which holds the code for the address
- State Fire Marshal plan review on new buildings, additions, changes of occupancy and fire-damaged work
- Electrical work under the state's own regulation, inspected by a licensed electrical inspection agency
- Sediment and stormwater approval from the delegated agency, and DNREC permits where they apply
Often exempt
- Inspection of a carport under 400 square feet, which is permitted but not inspected
- Automatic fire sprinklers in one- and two-family dwellings and townhouses under the county's amendment
- State Fire Marshal plan review on buildings used wholly as dwellings of no more than two families
- State Fire Marshal plan review on buildings used wholly for farming purposes
- Ordinary repairs that the county's adopted code places below the permit threshold
Which authority holds the code for your address
Sussex County enforces its building code across the unincorporated county and for 14 incorporated towns that have not taken the function on themselves, so the Building Code Office can be the authority for a project inside a town's limits — and the county's own amendments matter on site, where a carport under 400 square feet is excluded from inspection while an otherwise-exempt farm building still pulls a permit for assessment.
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 Sussex County?
Unincorporated Sussex County, and the 14 towns that rely on the county, are served from the county offices at 2 The Circle in Georgetown: the Building Permit Office issues the permit, and the Building Code Office conducts plan review and inspections for single-family, multi-family and commercial work — new construction, additions, remodelling and alterations. Plumbing permits and inspections come from the state Division of Public Health ((302) 933-3430), and septic systems from DNREC.
Not sure this scope needs a permit?
Get a free quote →| Detail | Information |
|---|---|
| Authority | Sussex County Building Permit Office (permits) and Building Code Office (plan review and inspections) |
| Office | 2 The Circle, PO Box 589, Georgetown, DE 19947; permit office walk-in Monday to Friday 8:30am to 4:30pm |
| Phone | (302) 855-7720 (permits); (302) 855-7860 (plan review); (302) 858-5500 (inspections) |
| Applies where | Unincorporated Sussex County and the 14 incorporated towns it enforces for |
| Adopted editions | 2021 IBC (Chapters 1–26) and 2021 IRC (Chapters 1–10), effective 1 January 2023 |
In 2025, building permits issued by Sussex County authorized 3,885 new privately owned housing units, 3,264 of them single-family homes, according to the U.S. Census Bureau Building Permits Survey.
Permit types
Residential permits
Houses, additions, decks, garages and remodelling are reviewed against the county's 2021 residential code, with the county's own exemptions applied: automatic fire sprinklers are exempted for one- and two-family dwellings and townhouses, and a carport under 400 square feet is permitted without an inspection. Larger and enclosed structures follow the normal permit and inspection path.
Commercial permits
Commercial and multi-family projects are reviewed under the 2021 building code, Chapters 1 through 26, and typically carry the State Fire Marshal's plan review alongside the county permit. Coastal and low-lying sites frequently add flood-elevation and state environmental review, which can reset foundation and elevation requirements, so those approvals are best settled early.
The state reviews that run alongside the permit
Sussex County also carries a coastal and flood dimension that reaches a large share of its projects, and the 2024 energy code takes effect on 11 April 2027.
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
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Call 1-855-478-4290 →Sussex County permit costs and fees
Sussex County bases its building permit fee on standard construction values (Marshall & Swift, revised each January), with the rates set in the annual county budget and a school-district surcharge on the construction valuation. Plan review and inspection fees changed on 1 July 2026: $120 for residential projects under 1,000 square feet, $240 or $360 for detached homes depending on size, $560 for townhouses and duplexes, and $360 plus $5 per $1,000 of construction for commercial and apartment work. Two rules bear on cost: the assessment permit that an exempt farm building still needs, and the energy report the 2024 energy code requires.
| Item | Fee or rule |
|---|---|
| Building permit | Based on standard construction values, with rates in the annual budget, plus a school-district surcharge; plan review and inspection fees from $120 (residential under 1,000 square feet) to $360 plus $5 per $1,000 (commercial) |
| Farm building | Exempt from the building-code provisions, but a permit is still taken for assessment purposes |
| Carport under 400 square feet | Permitted but excluded from inspection under the county's own amendment |
| Energy report | Required with plans for the 2024 energy code, which applies from 11 April 2027; the county’s notice applies it to plans submitted after 10 April 2026 |
An exempt farm building is not a permit-free farm building. Because a farm building takes a permit for assessment purposes even though it is exempt from the construction provisions, treating it as entirely permit-free is a common and avoidable mistake — the record still has to be made with the Building Code Office.
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
Rather not deal with the Sussex County building department?
Get a free quote →Electricians, plumbers and fire protection contractors hold state licences, and electrical inspection is carried out by licensed inspection agencies. Delaware rules
How to apply for a Sussex County building permit
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
What slows a Sussex County project is usually the overlay rather than the building drawings: a coastal or flood-zone determination that changes the foundation, or an energy report missing from a submittal under the 2024 energy code. Establishing the flood and environmental picture before design is settled, and preparing the energy compliance report where the timing calls for it, keeps the Building Code Office review moving.
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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 Sussex County the Building Code Office carries out the inspections for single-family, multi-family and commercial work, with the carport-under-four-hundred-square-feet exclusion the notable exception, and a certificate closes the file.
Sussex County permit search and official resources
- Sussex County Building Code Office — plan review, inspections and the list of towns it serves
- Sussex County adopted-code history — which editions apply and the county's own exemptions
- 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
Who enforces the building code in my Sussex town?
The Building Code Office enforces for the unincorporated county and for 14 incorporated towns: Bethel, Blades, Bridgeville, Dagsboro, Dewey Beach, Ellendale, Fenwick Island, Frankford, Georgetown, Greenwood, Henlopen Acres, Ocean View, Slaughter Beach and South Bethany. Those towns need a county certificate of occupancy. Larger towns run their own departments, but a county building permit is still required there, so confirm which applies to the address before filing.
Inspections are where schedules slip.
Get a free quote →Do I need a permit for a carport?
A carport under 400 square feet is permitted but excluded from inspection under the county's own amendment. Larger carports and enclosed structures follow the normal permit and inspection path.
Are farm buildings exempt?
Farm buildings used in farming are exempt from the building-code construction provisions, but a permit is still taken for assessment purposes, so the structure is placed on the record even though it is not code-inspected as an ordinary building.
Which code editions apply?
The 2021 International Building Code, Chapters 1 through 26, and the 2021 International Residential Code, Chapters 1 through 10, effective the first of January 2023, with the county’s exemptions including the sprinkler exemption for one- and two-family dwellings and townhouses.
Is an energy code change coming?
Yes. From 11 April 2027 the county requires the 2024 energy code, and its notice says plans submitted after 10 April 2026 must be designed to it and include an energy compliance report such as a REScheck or COMcheck.
Does the coast affect my permit?
Often. Low-lying and coastal parcels commonly carry flood-elevation and state environmental review alongside the county building permit, which can change foundation and elevation requirements, so those approvals are best settled early.
Simplify Sussex County permitting with Alliance Permitting
21+ years of working actual jurisdictions is what tells you that Sussex County can be the authority inside a town's limits, that a carport under 400 square feet skips inspection, and that a farm building still needs a permit on the record. Our team confirms which office holds the code for the parcel, settles the coastal and flood questions before design locks, prepares the energy report where the 2027 change reaches the timing, files with the Building Code Office and tracks the work to a certificate.
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Send us the scope and the parcel. We confirm the review path with the Sussex County Building Code Office, 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 Sussex County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.