Plumbing Permit in Sussex County, Delaware
Permit required
Yes, a permit is required
Before starting new, added or relocated plumbing work.
Issued bySussex County Building Permit Office and Building Code Office
By Mario Bailey, verified against official sources
Quick answer
Sussex County issues no plumbing permits. In unincorporated Sussex the Delaware Division of Public Health Plumbing Permit and Inspection Program issues them, to Delaware licensed plumbers or owner-occupant homeowners, and a permit must be in hand before work starts.
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When a permit is usually needed
Before starting new, added or relocated plumbing work.
What a plumbing permit costs in Sussex County
How to apply in Sussex County
In Sussex County, you apply for a residential plumbing permit at your local building department by filing an application that describes the scope of work and site, along with construction documents, before any regulated plumbing installation, alteration, or repair begins. Minor repairs that do not touch piping or fixtures are generally exempt, and once issued the permit only stays valid if work is started within its time limit.
What most plumbing permit applications include:
- For Sussex County, a permit is required before any owner or authorized agent constructs, alters, repairs, removes, converts, or replaces a plumbing system regulated by the code (IRC R105.1).
- For Sussex County, the application must identify and describe the work, describe the site, state the intended use and occupancy, and be signed by the applicant or an authorized agent (IRC R105.3).
- Two or more sets of construction documents must accompany the application, drawn with enough clarity to show the location, nature, and extent of the proposed plumbing work and how it will conform to code (IRC R106.1, R106.1.1).
- Minor plumbing repairs, such as clearing a stoppage or removing and resetting a water closet without rearranging pipes or fixtures, are exempt from permit (IRC R105.2).
- Once issued, a permit is only valid for a limited window, commonly 180 days, and becomes invalid if the work is not started or is abandoned within that time, though extensions can be requested (IRC R105.3.2, R105.5).
General submittal guidance from 2021 International Residential Code (IRC), Chapter 1 Scope and Administration, Sections R105 Permits and R106 Construction Documents. Source. Sussex County Building Permit Office and Building Code Office sets the exact checklist for Sussex County.
Where to apply in Sussex County:
Sussex County Building Permit Office and Building Code Office
- 2 The Circle, P.O. Box 589, Georgetown, DE 19947
- Phone: (302) 855-7720
- Email: buildinginspections@sussexcountyde.gov
Plumbing Permit in Sussex County compared with nearby Delaware localities
| Locality | Permit needed? | Threshold | What each Delaware schedule says | Verified |
|---|---|---|---|---|
| Sussex County | Permit required | Any size | Division of Public Health: $100 per plumbing permit (covers 3 inspections) | |
| New Castle County | Permit required | Any size | ...6 Schedule of Permit and Review Fees, as amended through January 1, 2026): $5.25... |
Inspections and closing out your permit
In Sussex County, plumbing inspections are timed to whatever is about to hide the pipe: underground and under-slab piping is checked before concrete covers it, rough-in piping is pressure or water tested before walls close up, and a final inspection checks every fixture and backflow protection once the work is complete.
- In Sussex County: piping and equipment placed under a slab or floor must be in place and inspected before any concrete is poured or floor sheathing is installed over it (IRC R109.1.1.1).
- In Sussex County: rough plumbing, along with the mechanical, gas, and electrical rough-in, must be inspected prior to covering or concealment and before fixtures or appliances are set (IRC R109.1.2).
- In Sussex County: rough drain, waste, and vent (DWV) piping is tested with water, air, or (for plastic piping) a vacuum, and must show no evidence of leakage before it is closed in (IRC P2503.5.1).
- In Sussex County: the water-distribution piping is tested and must hold tight under the system's working pressure, or under a 50 psi air test for non-plastic piping, before it is concealed (IRC P2503.7).
- In Sussex County: the framing inspection cannot proceed until the plumbing rough inspection, along with the mechanical and electrical rough inspections, has been approved (IRC R109.1.4).
- In Sussex County: at the final drainage test, each fixture is filled and then drained, and its traps and fixture connections must prove watertight by visual inspection (IRC P2503.5.2).
- In Sussex County: final inspection is made after all work required by the permit is complete, and includes confirming backflow protection, such as vacuum breakers on hose bibbs, is installed (IRC R109.1.6, P2902.4.3).
Schedule each inspection in advance and pass the final before you use the work or close the permit. Request inspections through the Sussex County permit portal or by phone at (302) 855-7720.
Inspection sequence from 2021 International Residential Code (IRC), Section R109 Inspections and Section P2503 Inspection and Tests. Source. An open permit left un-inspected can surface later in a title search or home sale.
Your Plumbing Permit checklist for Sussex County
- Confirm the requirement. Yes, a permit is required. Usually needed: Before starting new, added or relocated plumbing work.
- Budget the fee. Division of Public Health: $100 per plumbing permit (covers 3 inspections); $50.00 per additional inspection. Official fee schedule.
- Apply. In Sussex County, you apply for a residential plumbing permit at your local building department by filing an application that describes the scope of work and site, along with construction documents, before any regulated plumbing installation, alteration, or repair begins. Minor repairs that do not touch piping or fixtures are generally exempt, and once issued the permit only stays valid if work is started within its time limit. Start at the Sussex County permit portal.
- Keep the office details handy. Sussex County Building Permit Office and Building Code Office. Phone: (302) 855-7720. Address: 2 The Circle, P.O. Box 589, Georgetown, DE 19947.
- Plan for inspections. In Sussex County, plumbing inspections are timed to whatever is about to hide the pipe: underground and under-slab piping is checked before concrete covers it, rough-in piping is pressure or water tested before walls close up, and a final inspection checks every fixture and backflow protection once the work is complete.
Compiled from the official sources on this page. Last checked .
Frequently asked questions
- Do you need a plumbing permit in Sussex County?
- Sussex County issues no plumbing permits. In unincorporated Sussex the Delaware Division of Public Health Plumbing Permit and Inspection Program issues them, to Delaware licensed plumbers or owner-occupant homeowners, and a permit must be in hand before work starts. Always confirm with the Sussex County Building Permit Office and Building Code Office before starting.
- How much does a plumbing permit cost in Sussex County?
- Division of Public Health: $100 per plumbing permit (covers 3 inspections); $50.00 per additional inspection. See the official fee schedule for current amounts.
- Where do you apply for a plumbing permit in Sussex County?
- You can apply through the Sussex County permit portal or contact the Sussex County Building Permit Office and Building Code Office directly. The links are listed on this page.
- Can a homeowner pull a plumbing permit themselves in Sussex County?
- Under Delaware law (9 Del. C. 6302(b); 9 Del. C. 4402(b); 24 Del. C. 1417; 24 Del. C. 1807(c)(2); 24 Del. C. 1820(c)(2); 16 Del. C. 7906(c)): Yes. Delaware homeowners may pull permits and do their own work, with trade-specific conditions. Sussex County's statute expressly lets any owner who wants to do their own work on their own building get a permit, and Kent County issues permits in the owner's name. For electrical work, a homeowner wiring their own home that is not for sale or rent must get a homeowner's permit from the Board of Electrical Examiners and pass a final inspection; swimming pools and hot tubs are excluded. Homeowners may do their own plumbing and HVACR work (but not gas piping) in their own home that is not for sale, rent or lease, and for plumbing must file a permit application with the inspection authority. Confirm how Sussex County applies this before you apply.
From the Library
What else needs a permit in Sussex County
Every other permit type we have verified for this jurisdiction, with the rule that applies here.
| Project | Permit needed? | Threshold | Typical fee |
|---|---|---|---|
| Bathroom Remodel Permit | It depends | Cosmetic finishes and like-for-like fixture swaps versus renovation, relocated or added plumbing, or new electrical work | ...County Building Permit Fee Guide: construction value (table rates such as... |
| Deck Permit | Permit required | Any size | ...County Building Permit Fee Guide: construction value (table rates such as... |
| Electrical Permit | Permit required | Any size | See schedule |
| EV Charger Permit | Permit required | Any size | See schedule |
| Fence Permit | Permit required | Any size | ...County Building Permit Fee Guide: construction value (table rates such as... |
| HVAC Permit | It depends | Replacement of existing equipment versus a new installation or additional unit | ...County Building Permit Fee Guide: construction value (table rates such as... |
| Patio Permit | Permit required | Any size | ...County Building Permit Fee Guide: construction value (table rates such as... |
| Pool Permit | Permit required | Any size | ...County Building Permit Fee Guide: construction value (table rates such as... |
| Roof Replacement Permit | It depends | Permit applies when the job includes structural sheathing or a change in roofing material | ...County Building Permit Fee Guide: construction value (table rates such as... |
| Shed Permit | Permit required | Any size | ...County Building Permit Fee Guide: construction value (table rates such as... |
| Solar Permit | Permit required | Any size | ...County Building Permit Fee Guide: construction value (table rates such as... |
| Water Heater Permit | It depends | Replacement of an existing water heater versus a new or relocated one | DPH plumbing permit $100 when one is required |
Plumbing Permit in other Delaware localities
Everything above, sourced
Code references
National and state model-code sections the general guidance on this page is drawn from. They are not Sussex County documents; the office above sets the local rules.
How this plumbing permit page for Sussex County was verified. 2 official sources: sussexcountyde.gov, dhss.delaware.gov; fee schedule: official document. Last checked by Mario Bailey, not confirmed with Sussex County Building Permit Office and Building Code Office. Rules change; confirm before you build. How we verify.
Last checked: Report an error on this page
Compare Plumbing Permit requirements across Delaware localities