Bolthole Index

Sussex County, Delaware

Zoning, building permits and septic rules in the Town of Millville, Delaware

The Town of Millville, Delaware (Sussex County) administers its own zoning ordinance and issues its own building permits for construction inside town limits12. A copy of a Sussex County building permit is part of the town application2. Septic permits are a state function through DNREC, not a town or county one3.

At a glance

Zoning
Yes: the town administers its own zoning (Chapter 155)1
Building permit
Required from the Town, plus a copy of a Sussex County permit2
Review time
Minimum of 5 business days after the application is received4
Building code
2021 International Residential Code for one- and two-family homes5
Septic
State permit from DNREC6
Wells
State well permit required7
RV or tiny home living
Not confirmed; ask Town Hall8
Property tax (county-level)
0.3% effective rate9

Who to call

Building permits

Town of Millville Town Hall (building permits and zoning)

Town building permit applications, plan review and the town zoning ordinance for parcels inside Millville

(302) 539-0449

36404 Club House Road Millville, DE 19967

Building permits

Sussex County Building Code Office

Sussex County building permit that the Town of Millville asks applicants to copy to the town

(302) 855-7860

Building Code Office, 2 The Circle, P.O. Box 589, Georgetown, DE 19947

Septic permits

DNREC-Ground Water Discharges Section

State on-site wastewater (septic) system permits for Sussex County

(302) 856-4561

Contact details are copied from each office’s official page and were checked against it on October 23, 2026.

Off-grid gear

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

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Does Millville, DE have zoning, and what does it mean for lot size and setbacks?

Yes. The Town of Millville administers its own zoning ordinance, Chapter 155 of the town code, for parcels inside town limits1. Inside Millville the town sets zoning; Sussex County's zoning applies only to unincorporated land.

In the R1 residential district, a single-family lot needs at least 7,500 square feet of area, 60 feet of frontage (100 feet where public sewer and water are not available) and 100 feet of depth10. R1 setbacks are 25 feet in front, 7 feet on each side and 10 feet in the rear11, with a maximum lot coverage of 45%12 and a height limit of 42 feet or 3 stories13.

In the R2 single-family and two-family district, a single-family lot needs 5,000 square feet and 50 feet of frontage14, with 55% maximum coverage15. The R1 and R2 figures come from the town's Ordinance 25-03 text; we could not confirm the other districts (MORE, agricultural residential and flood)16. Ask Town Hall which district a parcel is in before you buy.

Do you need a building permit in Millville, and who issues it?

Yes. Construction inside Millville town limits needs a town building permit, and work may start only after the permit is issued2. The application asks for an HOA approval letter if one applies, a copy of a Sussex County building permit, two sets of detailed plans, a site survey and the signed town application2. The Town has a minimum of 5 business days to review plans after receiving the application4.

A builder or contractor hired for the work needs a Town of Millville business license2. Fees are in the town's fee schedule; the published table starts at a $50 base for a project up to $99917. Starting without a permit doubles the fee2.

The town has adopted the 2021 International Residential Code for one-family and multifamily dwellings, with a 24-inch frost depth for footings5. Farm buildings are exempt from the International Building Code, though the town's zoning and permit rules are not addressed by that exemption18.

How do septic permits work inside Millville?

Septic permits in Delaware are issued by the state, not by a town. DNREC's Ground Water Discharges Section handles on-site wastewater systems, and a permit is required for new or replacement systems in Sussex County6. Contact19 at (302) 856-4561 for the permit.

Whether a particular Millville lot is served by public sewer, or can use a septic system at all, is something we could not confirm from the town's pages; ask Town Hall. Soil matters too: Sussex County rates essentially no soil as "not limited" for a conventional drain field20, so expect a site evaluation and often an engineered or mound system. Wells need a state permit as well7.

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

We could not confirm any Millville rule on living in an RV, camping, tiny homes, manufactured homes or accessory dwellings. The town's zoning text mentions storing a camp travel trailer as an accessory use but says nothing about living in one. Sussex County's RV and tiny-home rules cover unincorporated land and do not decide this question inside town limits. Ask8 at (302) 539-0449 for a written answer before you move a trailer or tiny home onto a lot.

Building a home in Millville: the steps, in order

  1. Ask8 which zoning district the parcel is in and whether the HOA, if any, must approve the plans2.
  2. Confirm sewer, or get a septic permit from196, and a well permit if needed7.
  3. Apply for the Sussex County building permit through21; the town asks for a copy2.
  4. Submit the town building permit application with plans and a site survey, and allow at least 5 business days for review4.
  5. Hire a contractor holding a Town of Millville business license, and begin work only after the permit is issued2.
  6. Subdivisions go through the town's own site plan process22.

What stays with Sussex County and the state, and what to check before you buy

For land outside Millville, use the Sussex County page: the county's own building permit and zoning rules apply only to unincorporated land. Septic permits and well permits come from the state wherever a lot sits67.

A new driveway or entrance onto a state-maintained road needs a DelDOT entrance permit23. Development in a mapped special flood hazard area needs a floodplain development permit in Delaware communities that take part in the flood insurance program24; we could not confirm Millville's flood district, so ask Town Hall.

For budgeting, Sussex County's effective property tax rate is 0.3% and the median property tax bill is $1,171 per year925.

Watch-outs

  • The zoning dimensions above come from the town's Ordinance 25-03 text, and we could not confirm its adoption date or the wording of the codified zoning chapter, so verify with Town Hall before you rely on a figure1116.
  • Millville permit fees are in a fee schedule dated FY24 and could have changed; confirm the current amount with Town Hall17.
  • We could not confirm building inspection requirements, owner-builder rules, floodplain rules or short-term rental rules inside Millville; ask8 at (302) 539-0449.

Sources

  1. Town of Millville, DE code of ordinances table of contents (eCode360) (Town of Millville), quoted and re-checked
  2. Building & Construction Info, Town of Millville, DE (Town of Millville), quoted and re-checked
  3. dnrec.delaware.gov, quoted and re-checked
  4. Building & Construction Info, Town of Millville, DE (Town of Millville), quoted and re-checked
  5. Chapter 48 Building Construction, Town of Millville, DE (eCode360) (Town of Millville), quoted and re-checked
  6. Septic Systems, quoted and re-checked
  7. Well Permits, quoted and re-checked
  8. Town of Millville Town Hall (building permits and zoning) (millville.delaware.gov)
  9. Effective property tax rate: Bolthole Index county data
  10. Ordinance 25-03 R2 and MORE Zoning (Town of Millville, DE) (Town of Millville), quoted and re-checked
  11. Ordinance 25-03 R2 and MORE Zoning (Town of Millville, DE) (Town of Millville), quoted and re-checked
  12. Ordinance 25-03 R2 and MORE Zoning (Town of Millville, DE) (Town of Millville), quoted and re-checked
  13. Ordinance 25-03 R2 and MORE Zoning (Town of Millville, DE) (Town of Millville), quoted and re-checked
  14. Ordinance 25-03 R2 and MORE Zoning (Town of Millville, DE) (Town of Millville), quoted and re-checked
  15. Ordinance 25-03 R2 and MORE Zoning (Town of Millville, DE) (Town of Millville), quoted and re-checked
  16. Ordinance 25-03 R2 and MORE Zoning (Town of Millville, DE) (Town of Millville), quoted and re-checked
  17. Building & Construction Info, Town of Millville, DE (Town of Millville), quoted and re-checked
  18. Chapter 48 Building Construction, Town of Millville, DE (eCode360) (Town of Millville), quoted and re-checked
  19. DNREC-Ground Water Discharges Section (sussexcountyde.gov)
  20. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  21. Sussex County Building Code Office (sussexcountyde.gov)
  22. Town of Millville, DE code of ordinances table of contents (eCode360) (Town of Millville), quoted and re-checked
  23. Entrance Permit System - Frequently Asked Questions (Delaware statewide rule), quoted and re-checked
  24. Floodplain Management (Delaware statewide rule), quoted and re-checked
  25. Median property tax bill: Bolthole Index county data

Written October 23, 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 Town of Millville

Town of Millville’s own rules

  • Building permitRequired

    Construction inside Millville town limits that needs a town building permit.

    • Required items: HOA approval letter if applicable; a copy of a Sussex County building permit; two sets of detailed plans (one for paver patios and fencing); a site survey; and a signed town building permit application. Walkways also need a topography plan.
    • Construction may proceed only after the permit is issued.
    • Town has a minimum of five business days to review plans after receiving the application.
    • Fee for building permits is doubled if a permit is not obtained before construction begins; penalties under § 155-65 also apply.
    • Contractors need a town of Millville business license.
    “the fee for building permits will be doubled if a permit is not obtained prior to the beginning of construction.”
  • Building code adoptedAdopted

    Construction inside Millville town limits: 2021 IBC for listed non-residential and multifamily occupancies, and 2021 IRC for one-family and multifamily dwellings.

    • IBC adopted for multifamily residential dwellings, assembly, business, educational, hazardous, factory, industrial, institutional, mercantile and storage occupancies (§ 48-1.a).
    • IBC does not apply to farm buildings or land in agricultural use (§ 48-1.b).
    • Where the IBC or IRC conflicts with the town code, the town code controls (§ 48-1.b(4) and § 48-1.d(3)).
    • IRC § R313 automatic fire sprinkler systems are exempt for one- and two-family dwellings and townhouses no taller than two stories (§ 48-1.d(1)).
    • Footings and foundation minimums are set locally: frost depth 24 inches and specified rebar (§ 48-1.d(2)).
    • Amendments are noted on the code page (ord. 23-04, 10-11-2022).
    “the provisions and regulations of the international residential code (hereinafter "irc"), 2021 edition and future editions, as adopted by the town council, as they relate to one-family and multifamily dwellings, are hereby adopted as the building standards for construction in the town of millville.”
  • Local zoningPresent

    Land inside Millville town limits: the town administers its own zoning ordinance (Chapter 155 Zoning) for parcels within the town.

    • The town code table of contents lists Chapter 155 as zoning. The town's zoning districts and dimensional rules were read from the town's Ordinance 25-03 PDF, not the codified chapter, which could not be opened within the research budget.
    • Adoption and effective date of Ordinance 25-03 are not stated on the fetched text; verify against the codified § 155-10.
    “chapter 155 zoning (§ 155-1 – § 155-79) gavel disposition list”
  • Zoning districtsPartial

    Zoning districts of Millville town

    • Partial: the R1 residential district and the R2 single-family and two-family district are confirmed from Ordinance 25-03. The MORE district, the AR agricultural residential district and the flood district were not confirmed from an official text.
    • Source is the town's Ordinance 25-03 text. Adoption and effective date not stated on the fetched text.
    “g. purpose of the r2 — single family and two family residential district.”
  • Minimum lot sizeSpecified

    Single-family dwellings in the R1 residential district inside Millville town limits

    • Applies to all uses in the R1 district except where otherwise provided.
    • Lot frontage 60 feet; 100 feet required for lots without access to public sewer and water.
    • Lot depth 100 feet.
    • Source is the town's Ordinance 25-03 text. Adoption and effective date not stated on the fetched text; the codified § 155-10 was not opened.

    minimum lot area: >= 7500 square feet (none stated) · minimum lot frontage: >= 60 feet (100 feet for lots without access to public sewer and water) · minimum lot depth: >= 100 feet (none stated)

    “(a) minimum: [1] lot frontage: 60 feet. minimum lot frontage of 100 feet is required for lots without access to public sewer and water services. [2] lot area: 7,500 square feet. [3] lot depth: 100 feet.”
    One more reviewed finding on this topic
    • Specified — Single-family dwellings in the R2 single-family and two-family residential district inside Millville town limits
      “(1) minimums for single-family dwellings: (a) lot frontage: 50 feet. (b) lot area: 5,000 square feet. (c) lot depth: 100 feet.”
  • SetbacksSpecified

    Principal dwellings in the R1 residential district inside Millville town limits

    • Applies to all uses in the R1 district except where otherwise provided.
    • Source is the town's Ordinance 25-03 text. Adoption and effective date not stated on the fetched text.

    front yard: >= 25 feet (none stated) · each side yard: >= 7 feet (none stated) · rear yard: >= 10 feet (none stated)

    “[4] each side yard: seven feet. [5] front yard: 25 feet. [6] rear yard: 10 feet.”
    One more reviewed finding on this topic
  • Lot coverageSpecified

    Principal and accessory buildings on a lot in the R1 residential district inside Millville town limits

    • Source is the town's Ordinance 25-03 text. Adoption and effective date not stated on the fetched text.

    maximum lot coverage (principal plus accessory buildings): <= 45 percent (none stated)

    “(b) maximum: the maximum coverage of the lot for the principal building and all accessory buildings shall be 45%.”
    One more reviewed finding on this topic
    • Specified — Principal and accessory buildings on a lot in the R2 single-family and two-family residential district inside Millville town limits
      “(3) maximum: the maximum coverage of the lot for the principal building and all accessory buildings shall be 55%.”
  • Building heightSpecified

    Buildings in the R1 residential district inside Millville town limits

    • Source is the town's Ordinance 25-03 text. Adoption and effective date not stated on the fetched text.

    maximum building height: <= 42 feet (none stated) · maximum stories: <= 3 stories (basement excluded)

    “d. building height in an r1 — residential district. the height of a building shall not exceed 42 feet in height or more than three stories, exclusive of a basement.”
    One more reviewed finding on this topic
    • Specified — Buildings in the R2 single-family and two-family residential district inside Millville town limits
      “j. building height in an r2 — single family and two family residential district. the height of a building shall not exceed 42 feet in height or more than three stories, exclusive of a basement.”
  • Agricultural exemptionConditional

    Land used for agricultural purposes inside Millville town limits, as to the IBC only

    • Exempt from the IBC for construction, alteration or repair; the IRC exemption is not stated.
    • Agricultural use means production for sale of plants or animals, or land in a soil conservation program; farm buildings are exempt from the IBC.
    • Other town rules, including zoning and the permit requirement, are not addressed by this text.
    “land used for agricultural purposes shall be exempt from the provisions of the ibc as regards construction, alteration or repair.”
  • Subdividing landRegulated (with conditions)

    Division of land inside Millville town limits

    • The town code lists Chapter 125, Subdivision of Land. The chapter text was not opened.
    • The town building page refers to minor and major subdivision site plan applications.
    “chapter 125 subdivision of land (§ 125-1 &ndash; § 125-39) gavel chapter 132 taxation”
  • Permit feesPublished

    Building permit fees for construction inside Millville town limits

    • Fees are in the town's FY24 fee schedule (linked from the Building & Construction Info page) and a fee table on that page.
    • The page's fee table lists a base of $50 for a total permit up to $999; $50 for $1,000 to $40,000 plus $11 per additional $1,000; and $479 plus $10 per additional $1,000 above $40,000. The table text is garbled in extraction; verify against the FY24 schedule.
    • Fee is doubled if a permit is not obtained before construction begins.
    • Additional professional fees may be billed to the applicant.
    • Entities exempt from ad valorem taxes pay no building permit fees but reimburse professional engineering or legal fees.

    minimum building permit fee (total permit up to $999): 50 USD (fee table; plus additional professional fees)

    “the fee for building permits will be doubled if a permit is not obtained prior to the beginning of construction.”
  • Permit processPublished

    Building permit application process for construction inside Millville town limits

    • Steps: submit the required items, complete and sign both pages of the application/agreement form, and pay the plan review/building permit fee at review.
    • Five business days for town plan review after receipt.
    • A contractor needs a town business license; permits and fees must be settled before work begins.
    “the town has a minimum of five (5) business days from the date the application is received to review the construction plans and return to the applicant along with the plan review/building permit fee due.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Town of Millville or Sussex County directly.

  • Owner-builder exemption — Owner-builder construction inside Millville town limits
  • Inspections — Building inspections for construction inside Millville town limits
  • Minimum dwelling size — Minimum dwelling size inside Millville town limits
  • Living in an RV — Long-term RV occupancy on private land inside Millville town limits
  • Camping on your land — Temporary camping on land inside Millville town limits
11 more unanswered
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Driveway access
  • 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 Town of Millville publishes no rule on the point, not that none exists. Sussex County’s page lists the county offices to call.

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