Bolthole Index

Kent County, Delaware

Building permits, zoning and land rules in Harrington, Delaware

Harrington, Delaware requires a city building permit to erect or structurally alter a building or structure inside city limits.1 Harrington sets its own zoning in Kent County, and building lots must have qualifying street access and access to public water and sewer.23 DNREC separately regulates septic systems throughout Delaware; state septic approval does not replace Harrington’s utility-access requirement.43

At a glance

Building permits
Required for erection or structural alteration; issued by the City Code Official or designee1
Zoning
City zoning applies; development standards depend on the district25
Water and sewer
Building lots must have access to public sewer and water services3
Septic systems
DNREC regulates onsite wastewater and requires construction or repair approval46
Accessory dwellings
Allowed conditionally in residential zones; rental units and manufactured-home ADUs are prohibited7
Owner electrical work
State homeowner permit available conditionally to an owner-occupant of a single-family dwelling8

Who to call

Building permits

City of Harrington Planning & Inspections Department

City building permits, planning, zoning questions and code enforcement

(302) 398-3530

106 Dorman St. Harrington, DE 19952

Online permits →

Septic permits

Delaware DNREC Wastewater Disposal Program

Onsite wastewater system siting, design and installation; Kent County septic contact

302-739-9947

Well permits

Delaware DNREC Water Supply Program

Non-industrial well construction and use permits

302-739-9944

Floodplain permits

City of Harrington City Hall — Floodplain Management

Questions about city floodplain management regulations

(302) 398-3530

106 Dorman St. Harrington, DE 19952

Contact details are copied from each office’s official page and were checked against it on October 12, 2026.

Off-grid gear

Going off-grid in Harrington means bringing your own water and power. The kit we’d start with:

These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.

Do you need a building permit in Harrington, DE?

Harrington requires a building permit before a building or structure is erected or structurally altered in any city zone; the City Code Official or designee issues the permit.1 Proposed construction and use must conform to applicable ordinances, and commercial trailers or truck bodies placed on residential property also require a permit.1 Harrington’s building-permit fee is due at application under the city fee schedule.9 A new-building application requires an accurate survey prepared by a licensed engineer or land surveyor, so include survey preparation in the project plan.10

Who handles Harrington building permits and inspections?

The City of Harrington Planning & Inspections Department handles city planning, building permits and code enforcement; contact the department at City Hall using the contact details below.11 Harrington’s Building Code Inspector or authorized assistant performs required building-code inspections.12 The city lists exclusions from the Building Code Inspector’s responsibilities, including small accessory buildings without electrical service, certain replacement work and fences; that list does not establish a blanket exemption from the city building-permit requirement.121 Ask the department for the inspections and application materials appropriate to the proposed project.11

Does Harrington have zoning, and can you build an accessory dwelling?

Harrington has its own zoning ordinance, and permitted uses and development standards depend on the zoning district.25 Ask Harrington Planning & Inspections to identify the parcel’s district and confirm lot size, setbacks, lot coverage and height before commissioning plans; we could not confirm those residential dimensions.11

Harrington allows accessory dwelling units in residential zones subject to other regulations and building codes, with only one ADU per lot.7 An ADU may not exceed 50% of the principal dwelling’s floor area, excluding space required for accessibility standards.7 The owner must occupy the principal dwelling or ADU as a primary residence and record the required declaration; rental ADUs and manufactured-home ADUs are prohibited.7

How do septic permits and wells work inside Harrington?

DNREC regulates onsite wastewater systems throughout Delaware, including Harrington, and generally requires a permit before septic construction or repair.46 Septic approval involves a site evaluation, system design and installation with licensed professionals.6 Harrington nevertheless requires access to public sewer and water for a building lot; obtain the city’s answer on utility access before planning a private system.3

Delaware well construction requires prior DNREC approval, a well permit and a call-in authorization, subject to the regulation’s stated exceptions.13 DNREC’s Water Supply Program issues non-industrial well construction and use permits; the wastewater program oversees septic siting, design and installation.1415

Can you live in an RV or tiny home in Harrington?

We could not confirm Harrington’s rules for residential RV occupancy, temporary camping or a standalone tiny home; ask the city Planning & Inspections Department about the exact proposed arrangement.11 Harrington’s conditional accessory-dwelling approval does not establish approval for every small dwelling: ADUs remain subject to applicable regulations and building codes, and manufactured homes are prohibited as ADUs.7 A dwelling project must also satisfy the city’s building-permit and utility-access requirements.13 For a small second dwelling, ask the city whether the proposal qualifies as an ADU and whether the intended occupancy meets its owner-occupancy and rental restrictions.7

Building a home in Harrington: what are the steps?

  1. Ask Harrington Planning & Inspections to confirm the zoning district and proposed use; city development standards are district-specific.115
  2. Confirm qualifying street access and access to public water and sewer before preparing the building application.3
  3. Prepare the scaled plot plan, lot and street information, building locations, yard dimensions and intended uses; new buildings need the licensed professional’s survey, and the code requires supporting documents in triplicate.10
  4. Submit the application and fee to the city and obtain the building permit before erection or structural alteration.91
  5. Arrange the required city building inspections; owner-occupants proposing their own electrical work must separately meet Delaware’s homeowner-permit conditions, including inspection-agency plan approval.128

What should you check before buying land in Harrington?

Confirm that the property lies inside Harrington city limits before selecting the building-permit office: Harrington requires its own city-issued building permits and applies its own zoning.12 For land outside the city, use the Kent County guide for unincorporated-area building and zoning requirements.16

Harrington requires new construction and redevelopment within special flood hazard areas to conform to the city floodplain regulations; City Hall answers floodplain-management questions.17 Check utility access and legal street access early, because Harrington’s building-permit rule expressly requires both.3 Where an existing property uses septic, Delaware’s property-transfer inspection requirements are a separate purchase consideration.18

Watch-outs

  • A Harrington building lot must have access to public water and sewer; do not assume a private well and septic system satisfy city building-permit requirements.3
  • We could not confirm Harrington’s residential RV occupancy or standalone tiny-home rules; ask the Planning & Inspections Department about the proposed use before buying.11
  • Harrington permits accessory dwellings conditionally, but prohibits rental ADUs and manufactured homes as ADUs.7

Sources

  1. Chapter 292 Permits and Approvals (Harrington), quoted and re-checked
  2. Chapter 440 Zoning (Harrington), quoted and re-checked
  3. Chapter 292 Permits and Approvals (Harrington), quoted and re-checked
  4. 7101 Regulations Governing the Design, Installation and Operation of On-Site Wastewater Treatment and Disposal Systems (Delaware statewide rule), quoted and re-checked
  5. Chapter 440 Zoning (Harrington), quoted and re-checked
  6. 7101 Regulations Governing the Design, Installation and Operation of On-Site Wastewater Treatment and Disposal Systems (Delaware statewide rule), quoted and re-checked
  7. Chapter 101 Accessory Dwelling Units (Harrington), quoted and re-checked
  8. Homeowner Permit (Delaware statewide rule), quoted and re-checked
  9. Chapter 292 Permits and Approvals (Harrington), quoted and re-checked
  10. Chapter 292 Permits and Approvals (Harrington), quoted and re-checked
  11. City of Harrington Planning & Inspections Department (harringtondelaware.gov)
  12. Chapter 7 Planning and Inspections Department (Harrington), quoted and re-checked
  13. 7301 Regulations Governing the Construction and Use of Wells (Delaware statewide rule), quoted and re-checked
  14. Delaware DNREC Water Supply Program (dnrec.delaware.gov)
  15. Delaware DNREC Wastewater Disposal Program (dnrec.delaware.gov)
  16. Planning Services, quoted and re-checked
  17. City of Harrington City Hall — Floodplain Management (harringtondelaware.gov)
  18. 7101 Regulations Governing the Design, Installation and Operation of On-Site Wastewater Treatment and Disposal Systems, quoted and re-checked

Written October 12, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

Answers from the rulebook for Harrington

Harrington’s own rules

  • Building permitRequired

    Erection or structural alteration of any building or structure inside Harrington city limits.

    • The permit must be duly issued by the City Code Official or designee.
    • The proposed construction or use must conform fully to applicable ordinances.
    • Commercial trailers and truck bodies on residential property also require a permit.
    “No building or structure in any zone shall be erected or structurally altered without a building permit duly issued upon application to the City Code Official or his/her duly appointed designee.”
  • InspectionsRequired

    Building inspections inside Harrington city limits.

    • The Building Code Inspector is responsible for all building inspections except listed exclusions.
    • Excluded work includes accessory buildings of 150 square feet or less without electrical service, administrative reviews, same-size window replacements, roof shingle replacement, ground-level uncovered decks, demolition, cosmetic interior improvements without structural wall construction, in-kind siding replacement, fences, and swimming pools.
    • Required inspections must be made by the Building Code Inspector or authorized assistant.

    inspection response time: <= 48 hours (within 48 hours of receipt of the building application)

    “Inspections required under the provisions of the building code shall be made by the Building Code Inspector or his/her duly appointed assistant.”
  • Local zoningPresent

    Land inside Harrington city limits; the City of Harrington adopted Chapter 440, Zoning.

    “[HISTORY: Adopted by the Mayor and Council of the City of Harrington 7-20-2015 by Ord. No. 15-06. Amendments noted where applicable.]”
  • Zoning districtsPublished

    Zoning districts inside Harrington city limits, including the Single-Family Residential Zone (R-1), Duplex Residential Zone (R-2), Townhouse Residential Zone (R-3), and Multifamily Residential Zone (R-4).

    • District-specific development standards and permitted uses apply by zone.
    “Article III Single-Family Residential Zone (R-1)”
  • Accessory dwellingsAllowed (with conditions)

    Accessory dwelling units in residential zones inside Harrington city limits.

    • ADUs are subject to applicable regulations and building codes.
    • Only one ADU is permitted per lot.
    • Manufactured homes are not permitted as ADUs.
    • The owner must occupy either the principal dwelling or ADU as a primary residence, with a recorded notice and declaration before certificate of use or building permit issuance.
    • On-site wastewater modifications require a DNREC permit.
    • ADUs are limited to 50% of the principal dwelling floor area.
    • Rental units are prohibited, ADUs may not be sold separately, and total lot coverage is limited to 50%.

    maximum ADU floor area: <= 50 percent of principal dwelling floor area (square footage required to meet accessibility standards does not count)

    “ADUs shall be permitted in all residential zones subject to compliance with other applicable regulations and building codes.”
  • Mandatory utility hookupWater and sewer (with conditions)

    Building construction or alteration on a lot inside Harrington city limits.

    • A building permit cannot issue for a lot without frontage upon or legal permanent access to a public street improved to the satisfaction of the Planning and Zoning Commission, or without access to public sewer and water services.
    “No building permit shall be issued for construction or alteration of any building(s) on a lot without frontage upon or legal permanent access to a public street improved to the satisfaction of the Planning and Zoning Commission, or without access to public sewer and water services.”
  • Driveway accessRequired

    Construction or alteration requiring a building permit inside Harrington city limits.

    • The lot must have frontage upon or legal permanent access to a public street improved to the satisfaction of the Planning and Zoning Commission.
    “No building permit shall be issued for construction or alteration of any building(s) on a lot without frontage upon or legal permanent access to a public street improved to the satisfaction of the Planning and Zoning Commission, or without access to public sewer and water services.”
  • Permit feesPublished (with conditions)

    Building permit applications inside Harrington city limits.

    • Applications must include a fee stated in Chapter 180 of the City Code.
    “Fees for building permits shall be paid in accordance with the fee schedule provided in Chapter 180 of the Code of the City of Harrington, and all such fees shall be paid into the City Treasury at the time of application for the permit.”
  • Permit processPublished (with conditions)

    Building permit applications inside Harrington city limits.

    • Applications require a fee, scaled plot plan, lot and street information, proposed and existing building locations, yard dimensions, intended uses and dwelling-unit count, and other information needed for conformity review.
    • New-building applications require an accurate survey prepared by a licensed engineer or land surveyor.
    • Applications and supporting documentation must be submitted in triplicate.
    “The application and all supporting documentation shall be made in triplicate. On issuance of the building permit, the City Code Official shall return one copy of all documents to the applicant.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Harrington or Kent County directly.

  • Owner-builder exemption — Owner-builder exemption inside Harrington city limits.
  • Building code adopted — Building-code adoption inside Harrington city limits.
  • Certificate of occupancy — Certificates of occupancy inside Harrington city limits.
  • Minimum dwelling size — Minimum dwelling size in Harrington city residential districts.
  • Minimum lot size — Minimum lot size in Harrington city residential districts.
16 more unanswered
  • Setbacks
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Agricultural exemption
  • Subdividing land
  • Building in a floodplain
  • Short-term rentals

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Unanswered questions are usually a sign that Harrington publishes no rule on the point, not that none exists. Kent County’s page lists the county offices to call.

← All of Kent County: county rules, score and offices