Bolthole Index

St. Mary Parish, Louisiana

Building permits, zoning and septic rules in Morgan City, Louisiana

Morgan City, Louisiana requires a city building permit to build or place a home, mobile home or other structure inside city limits.1 Morgan City administers its own zoning; St. Mary Parish zoning applies to unincorporated land outside the city.23 Onsite sewage approval remains with the Louisiana Department of Health, Office of Public Health, rather than the city building-permit counter.4

At a glance

Building permits
Required through city Planning and Zoning1
Zoning
City districts govern uses and setbacks52
Septic permits
State health approval required before installation, alteration or operation6
RV living
Flood-zone conditions apply; general private-lot occupancy not confirmed7
Manufactured homes
Prohibited in the R-1E residential district8
Owner-builder
State licensing exemption for qualifying personal-residence construction; building permit still required91

Who to call

Planning & zoning

Morgan City Planning and Zoning Department

City building-permit applications, zoning classifications, setbacks and development review

(985) 380-4716

509 Second Street Morgan City, LA 70380

Floodplain permits

Morgan City Office of Planning and Zoning — Floodplain Management

Floodplain development and flood-protection questions

(985) 380-4724

Septic permits

St. Mary Parish Health Unit

Local Environmental Health contact for state onsite sewage approval

985.380.2441

1200 David Drive, Morgan City, LA 70380

Contact details are copied from each office’s official page and were checked against it on October 11, 2026.

Off-grid gear

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

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Do you need a building permit in Morgan City, LA?

Morgan City requires anyone building or locating a residential structure, commercial structure, mobile home or other structure on a city lot to apply to the city Planning and Zoning Department for a building permit.1 Covered construction cannot begin without the owner’s permit and placard, and utilities cannot be connected without the required building permit and placard.1 Morgan City has adopted the Louisiana State Uniform Construction Code in its current lawful adopted cycle.10 A qualifying Louisiana owner-builder exemption concerns contractor licensing and does not waive health or life-safety requirements; the city building-permit requirement still applies.91

Who handles Morgan City building permits and zoning applications?

Building-permit applications inside Morgan City go to the city Planning and Zoning Department.1 The department lists (985) 380-4716 and 509 Second Street Morgan City, LA 70380 as its contact details.2 Morgan City describes MGO Connect as a starting point for downloading current applications and preparing documentation, rather than the channel for submitting applications; submission follows through the appropriate city channels.11 Ask the city department for the submission route, current building-permit fee, inspection schedule and occupancy paperwork for your project; we could not confirm the complete city inspection and occupancy procedure.1112

Does Morgan City have zoning, and what setbacks apply?

Morgan City has published zoning districts, and the city Planning and Zoning Department provides guidance on permitted uses, zoning classifications and setbacks.52 For houses and garages or carports in R-1A, the listed yards are 30 feet front, 10 feet side, 15 feet street-side on corner lots and 25 feet rear.13 In R-1C, the corresponding yards are 20 feet front, 5 feet side, 12 feet street-side on corner lots and 15 feet rear.14 These are district-specific standards, so ask Planning and Zoning to identify the parcel’s district before drawing a house footprint.13142

How do septic permits work inside Morgan City?

Louisiana requires a state health officer permit before installing, altering or operating an individual sewage system, with approved plans and specifications.6 Municipal approval cannot authorize an individual sewage system without written Office of Public Health approval.4 The St. Mary Parish Health Unit offers Environmental Health services at 1200 David Drive, Morgan City, LA 70380; call 985.380.2441 to discuss a proposed onsite system.15 A temporary individual-system permit depends on a determination that connection to community sewerage is not feasible, plus suitable soil, drainage and lot conditions.6 Final approval requires installation verification by inspection and/or licensed-installer certification.16

Can you live in an RV or tiny home in Morgan City?

Morgan City’s RV flood rule applies to sites in zones A1-30, AH and AE: an RV must remain fewer than 180 consecutive days, be fully licensed and ready for highway use, or meet the stated manufactured-home permit, elevation and anchoring requirements.7 Highway readiness requires wheels or a jacking system, quick-disconnect utilities and security devices, and no permanently attached additions.7 That flood rule does not establish general residential permission on a private lot; ask city Planning and Zoning about the proposed occupancy and district.72 We could not confirm tiny-home or accessory-dwelling authorization; manufactured homes are prohibited in R-1E.8

Building a home in Morgan City: what are the steps?

  1. Ask Morgan City Planning and Zoning to identify the parcel’s zoning classification, permitted residential use and setbacks.2
  2. Contact city Floodplain Management before building, filling or placing a manufactured home to establish the development requirements.17
  3. Establish whether community sewer connection is feasible before pursuing an individual sewage-system permit through the state health process.6
  4. Download current city application forms, prepare documentation and confirm the city submission channel.11
  5. Obtain the city building permit and placard before covered work begins or utilities are connected.1

For land outside city limits, use the St. Mary Parish guide: parish zoning applies to unincorporated land, rather than Morgan City lots.3

Watch-outs

  • Morgan City floodplain development requirements cover filling and manufactured-home placement as well as building; contact the city before starting those activities.17
  • A Louisiana owner-builder licensing exemption does not remove Morgan City’s building-permit requirement.91
  • We could not confirm a general city water-or-sewer connection-distance rule; discuss sewer feasibility with the Health Unit before assuming a septic system can serve the property.615

Sources

  1. Code of Ordinances, Chapter 22, Sec. 22-32 - Building permit required by owner and contractor (Morgan City), quoted and re-checked
  2. Morgan City Planning and Zoning Department (cityofmc.com)
  3. Unified Development Ordinance, quoted and re-checked
  4. RS 40:5. General powers and jurisdiction, quoted and re-checked
  5. Code of Ordinances, Chapter 126, Sec. 126-41 - Districts established (Morgan City), quoted and re-checked
  6. Louisiana Administrative Code Title 51, Part XIII, Public Health—Sanitary Code (Louisiana statewide rule), quoted and re-checked
  7. Code of Ordinances, Chapter 46, Sec. 46-82 - Specific standards (Morgan City), quoted and re-checked
  8. Code of Ordinances, Chapter 126, Sec. 126-47 - Schedule of district regulations (Morgan City), quoted and re-checked
  9. Louisiana Revised Statutes § 37:2157 — Exemptions (Louisiana statewide rule), quoted and re-checked
  10. Code of Ordinances, Chapter 22, Sec. 22-31 - Adoption of the International Building Code (Morgan City), quoted and re-checked
  11. Permits - City Of Morgan City, Louisiana (Morgan City), quoted and re-checked
  12. Morgan City Municipal Code and Fee Schedule (Morgan City), quoted and re-checked
  13. Code of Ordinances, Chapter 126, Sec. 126-47 - Schedule of district regulations (Morgan City), quoted and re-checked
  14. Code of Ordinances, Chapter 126, Sec. 126-47 - Schedule of district regulations (Morgan City), quoted and re-checked
  15. St. Mary Parish Health Unit (ldh.la.gov)
  16. Louisiana Administrative Code Title 51, Part XIII, Public Health—Sanitary Code (Louisiana statewide rule), quoted and re-checked
  17. Morgan City Office of Planning and Zoning — Floodplain Management (cityofmc.com)

Written October 11, 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 Morgan City

Morgan City’s own rules

  • Building permitRequired

    Any person building or locating a residential, commercial, mobile-home, or other structure on a lot within Morgan City corporate limits.

    • Application is made to the city planning and zoning department.
    • Applicable local, state, and federal requirements must be satisfied before final utility-service permitting.
    • Utilities may not be connected without the required building permit and placard.
    • A contractor may not commence covered work without the owner's permit and placard.
    • Bar or lounge projects require prior liquor-license and permit review by the city council.
    “Any person who builds or locates a residential or commercial structure, mobile home or structure of any kind upon a lot within the corporate limits of the city shall apply to the city planning and zoning department for a building permit.”
  • Building code adoptedAdopted

    Construction, alteration, repair, equipment, use, occupancy, maintenance, permits, and administration of buildings and structures inside Morgan City.

    • The adopted code is the Louisiana State Uniform Construction Code in its current lawful adopted cycle.
    • Applicable referenced standards, appendices, and administration chapters are included.
    “The Louisiana State Uniform Construction Code as may from time to time be amended and promulgated by the Louisiana State Uniform Construction Code Council and all other applicable standards and appendices referenced in that code is hereby adopted and administered, in its current lawful adopted cycle, as the building code of the City of Morgan City.”
  • Zoning districtsPublished

    Zoning districts inside Morgan City city limits.

    • The code lists R-1A, R-1B, R-1C, R-1D, R-1E, R-2, R-3, R-4, R-4A, R-5, R-6, B-1, B-2, B-P2, B-3, P, C, and H districts.
    “For the purpose of this chapter, the city is divided into 15 districts designated as follows:”
  • SetbacksDistrict specific (with conditions)

    Single-family houses and garages/carports in the R-1A Residential district.

    • The schedule lists a 15-foot street-side yard on corner lots and a 25-foot rear yard.
    • One-story accessory buildings and other structures have separate yard requirements.

    front yard: 30 ft · side yard: 10 ft (15 ft street-side yard on corner lots) · rear yard: 25 ft

    “House and garage (carport): 30 10 15 (street side yard on corner lot) 25”
    One more reviewed finding on this topic
  • Living in an RVLimited

    Recreational vehicles placed on sites in flood zones A1-30, AH, and AE inside Morgan City.

    • The RV must be on site fewer than 180 consecutive days, or be fully licensed and ready for highway use, or satisfy the permit and elevation/anchoring requirements for manufactured homes.
    • A ready-for-highway-use RV must be on its wheels or jacking system, attached only by quick-disconnect utilities and security devices, and have no permanently attached additions.

    maximum consecutive days unless an exception applies: < 180 days (Fully licensed and ready for highway use, or compliant with Sec. 46-58(a) and manufactured-home elevation and anchoring requirements.)

    “Require that recreational vehicles placed on sites within zones A1-30, AH and AE on the city's FIRM be on the site for fewer than 180 consecutive days, be fully licensed and ready for highway use, or meet the permit requirements of section 46-58 (a), and the elevation and anchoring requirements for manufactured homes in subsection (4) of this section.”
  • Camping on your landProhibited

    Camping on public property inside Morgan City city limits.

    • Camping is allowed in an area specifically authorized for camping or when the person possesses a permit.
    • The prohibition does not apply to temporary structures or camps set up by a government agency or relief workers during a disaster or emergency.
    • The article does not criminalize homelessness or status rather than conduct.
    “No person shall camp on any public property, unless it is an area specifically authorized for camping or the person possesses a permit allowing camping in the area.”
  • Manufactured homesProhibited

    Manufactured-home occupancy in the R-1E residential district.

    “All uses not specifically permitted in this section, including trailers (manufactured homes), containerized housing units (CHU), accessory buildings, and temporary portable covers”
  • Subdividing landRegulated (with conditions)

    Subdivision proposals inside Morgan City city limits, including manufactured-home parks and subdivisions.

    • Subdivision proposals must comply with the flood ordinance when applicable.
    • Development-permit requirements apply.
    • Proposals greater than 50 lots or five acres, whichever is lesser, require base-flood-elevation data when not otherwise provided.
    • Adequate drainage and public utilities must be provided to reduce or eliminate flood exposure.

    threshold for required generated base-flood-elevation data: greater than 50 lots or five acres, whichever is lesser (Not required under this subsection if otherwise provided under Sec. 46-33(b) or 46-57(8).)

    “All subdivision proposals, including the placement of manufactured home parks and subdivisions, shall be consistent with section 46-31 (b) through (d).”
  • Building in a floodplainRequired

    Development in Morgan City floodplain areas and other city development subject to local and state permitting.

    • All development in the city needs local and state permits.
    • Development in the floodplain without a permit is illegal.
    • For residential construction where base-flood data is provided, the lowest floor including basement must be elevated to or above the base-flood elevation; in Zones B, C, D, and X it must also be one foot above the street crown.
    • Substantial improvement or substantial damage at or above 50 percent of market value must meet new-building requirements and requires a building permit.

    substantial-improvement/substantial-damage threshold: >= 50 percent of market value

    “All development in the City of Morgan City needs local and state permits. Contact the City of Morgan City’s Office of Planning Zoning at (985) 385-1770 or (985) 380-4724 for advice before you build, fill, place a manufactured home or otherwise develop. The zoning ordinance, flood control ordinance and the International Building Codes have special provisions regulating construction and other developments within floodplains. Without these provisions, flood insurance through the National Flood Insurance Program (NFIP) would not be available to property owners in the City of Morgan City. Any development in the floodplain without a permit is illegal; such activity can be reported to the Director of Planning and Zoning at (985) 380-4724.”
  • Permit feesPublished

    Municipal fees assessed inside Morgan City, including building-permit fees referenced by Sec. 22-32(e).

    • The municipal code portal identifies a fee schedule as a complete listing of municipal fees; the actual fee amounts were not exposed in the opened page.
    “Fee Schedule A complete listing of fees assessed by the Municipality.”
  • Permit processPartial

    Municipal permit applications inside Morgan City city limits.

    • MGO Connect is a starting point for downloading forms, not the submission channel itself.
    • Applicants must prepare documentation and submit through the appropriate city channels.
    • Building permits are applied for through the city planning and zoning department.
    “The City of Morgan City uses the MGO Connect Customer Portal as a central online hub where residents, contractors, and business owners can download permit applications and related forms. Permits aren’t submitted through the portal itself — instead, MGO Connect is your starting point. Review requirements, download the current forms, and prepare your documentation before submitting your application through the appropriate city channels.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Morgan City or St. Mary Parish directly.

  • Owner-builder exemption — Owner-builders performing construction inside Morgan City city limits.
  • Inspections — Building inspection requirements inside Morgan City city limits.
  • Certificate of occupancy — Certificate-of-occupancy requirements inside Morgan City city limits.
  • Minimum dwelling size — Minimum dwelling size inside Morgan City city limits.
  • Lot coverage — Lot coverage inside Morgan City city limits.
12 more unanswered
  • Building height
  • Tiny homes
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Driveway access
  • 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 Morgan City publishes no rule on the point, not that none exists. St. Mary Parish’s page lists the county offices to call.

← All of St. Mary Parish: county rules, score and offices