Shotgun HomesNew Orleans

Due diligence

How to Check the Permit History of a Shotgun House in New Orleans

Use the New Orleans One Stop App, related City records and the Property Viewer to compare a shotgun home's documented alterations with the building that exists today.

August 24, 2026·11 min read

Permit history is one part of the wider due-diligence process when buying a shotgun home in New Orleans. The useful question is not simply whether an address has permits, but what the house was, what has changed, which changes appear in the City's records and what still needs an explanation.

Ryan Roberts

Written by Ryan Roberts

Ryan Roberts is a New Orleans real estate agent focused on shotgun homes and historic residential property.

Where should you search for a New Orleans shotgun house permit history?

To check the permit history of a shotgun house in New Orleans, search the property address in the City of New Orleans One Stop App, review the permits and violations attached to that address, and compare the recorded work with the house that exists today.

Permit history is one part of the wider due-diligence process when buying an older New Orleans home. It is especially useful with an older property because the current configuration may differ from the original shotgun building type after additions, conversions, elevation work, system upgrades or major renovations.

There is one important limitation: the One Stop App's searchable data runs from 2007 to the present. A much older shotgun house can therefore have decades of alterations that predate the online record. If important information is missing, the next step is to broaden the address search, use City open-data resources and request the underlying public record where necessary.

Search the shotgun house by street address in the New Orleans One Stop App, open the records associated with the property and compare each permit's description and status with the home's current structure and use.

  • —Search the house number and street name in the One Stop App.
  • —Open the permits, violations, licenses and planning records associated with the property.
  • —Read the work description, permit type, dates, contractor, reviews and inspection information.
  • —Compare the recorded work with the current floor plan, additions, exterior and major systems.
  • —Verify the property's zoning and historic-district context in the New Orleans Property Viewer.
  • —Request additional records when the online permit history does not explain a material alteration.

What is the New Orleans One Stop App?

The New Orleans One Stop App is the primary public system for finding permits, licenses, planning projects and violations associated with a property.

You do not need an account simply to search existing records or download public documents. Registration is required for Advanced Search, which adds filters such as application dates, permit type, Council District and keywords from the project description.

That distinction matters with an older shotgun house because an address search may return a mixture of separate records rather than one convenient renovation history. You are reconstructing the building's history from those individual records.

If you are still learning how the shotgun form itself is organized, understanding the shotgun building type first makes it easier to separate an original feature from a later alteration.

Which permits matter most for a shotgun house?

The most important permits are the ones that correspond to changes in the shotgun house's structure, occupancy, footprint, building systems, municipal address or exterior appearance.

  • —Structural renovation: Look for work involving foundations, beams, load-bearing walls, structural members, house elevation or additions.
  • —Non-structural renovation: Look for recorded interior or exterior work that did not require structural classification.
  • —Change of use: Check whether the legally approved use or occupancy of the building changed.
  • —Municipal address change: This is especially important when a double was converted into one residence or addresses were otherwise added or removed.
  • —Electrical, mechanical and gas permits: These can help date major building-system upgrades.
  • —Roofing and exterior work: These records can help establish when major exterior components were replaced.
  • —Historic-district approvals: HDLC or VCC records may apply to exterior work depending on the property's location.
  • —Violations: Review enforcement records that may identify work, occupancy or property conditions the City questioned.
  • —Demolition or partial demolition: These can matter when a rear structure, dependency, addition or part of the original building was removed.

New Orleans requires a Structural Renovation permit for changes involving foundations, beams, load-bearing walls, other structural members and additions. Those records are especially relevant when the physical form of the shotgun house has changed.

How should you read the permit record?

Read the scope of work first, then check the permit status, dates, reviews, inspections, applicant, contractor and any related sub-permits.

  • —Work description: Does the description explain the renovation visible in the house?
  • —Permit type: Was the project classified as structural, non-structural, change of use, elevation, repair or another permit type?
  • —Application and issuance dates: Do the dates correspond with the seller's or listing's renovation history?
  • —Status: Was the record only submitted, or was the permit approved, issued and later finaled?
  • —Contractor or applicant: Who was responsible for the application or permitted work?
  • —Department reviews: Did zoning, plan review, floodplain, HDLC, VCC or another department review the project?
  • —Inspections: What inspections appear in the record, and what results are shown?
  • —Related records: Are there electrical, mechanical, address, historic-district or other records tied to the same project?

Do not stop when you see the word “permit.” The useful question is what that particular permit authorized and how far the application progressed.

The City's permit summary can show status information, reviews, comments, inspections and contractor details. That makes the record itself more useful for due diligence than a search-results screen alone.

How do you compare permits with the house?

Compare every substantial alteration visible in the house with the work described in the available permit records.

You are comparing two versions of the same property: the documentary house recorded by the City and the physical house standing on the lot.

  • —A rear addition that appears newer than the original structure.
  • —An added partial second floor or rear upper story.
  • —A double shotgun that now functions as one dwelling.
  • —Major changes to the traditional single-shotgun layout.
  • —Foundation replacement or whole-house elevation.
  • —Large porch, gallery, roofline or exterior alterations.
  • —Substantial electrical, mechanical or plumbing modernization.
  • —Additional bathrooms or kitchens associated with a changed layout.
  • —An accessory structure that does not appear to be part of the original building.

The objective is not to prove from appearance alone that work was unpermitted. It is to identify a document-to-building mismatch that deserves further investigation.

If a listing describes a “complete renovation” but the available records only show a roof permit, ask for the permit numbers, approved plans, invoices, inspection documentation and any other records connected to the renovation.

What should you check for a double-to-single conversion?

For a double-to-single conversion, check the building-permit history together with Change of Use and municipal-address records associated with the conversion.

This is one of the most important shotgun-specific checks. A traditional double shotgun contains two side-by-side residential units, and the building may historically have carried separate municipal addresses even when it now functions as one home.

The City specifically uses converting a double into a single-family home as an example of a situation where an existing address may need to be removed. Its guidance states that a Change of Use permit and Municipal Address Change Application Supplement M are used for that process.

Then look separately at the physical work. If the conversion changed structural members or load-bearing walls, compare those changes with structural-renovation records. Understanding how a double shotgun is configured also helps distinguish a true change in occupancy from a purely cosmetic interior renovation.

Do not search only for the phrase “conversion permit.” Reconstruct the change through its attributes.

Reconstructing a double-to-single conversion
Double shotgun
Two dwelling units
Use or occupancy
Municipal addresses
Interior connection
Structural alterations
Permits

Related records provide a better picture of the conversion than a search for one exact permit phrase.

How should you investigate a camelback or rear addition?

Check whether a newer-looking camelback, rear room or second-story section corresponds with a structural-renovation or addition record.

A camelback is not automatically evidence of a later alteration. The form itself is a recognized shotgun-house configuration, and some camelbacks were built that way from the beginning. If you are not sure what makes a house a camelback, identify the building form before assuming the rear upper story was added later.

The permit question becomes more important when the upper or rear section appears to have been added, enlarged, elevated or materially rebuilt.

Compare the age and materials of the front and rear sections, roofline changes, floor-level changes, stair placement, stated square footage, permit descriptions and any plans referring to an addition.

This is why permit history works best alongside a home inspection rather than as a substitute for one. The permit tells you what was recorded; the inspection helps establish what is physically there.

Does one permit prove the entire shotgun house was permitted?

No. A permit for one project establishes the scope of that permit; it does not prove that every alteration to the shotgun house was permitted, inspected or legally established.

Suppose a permit describes an interior kitchen and bathroom renovation, but the property also contains a large rear addition, an added second floor or a changed number of dwelling units. The kitchen permit does not automatically document those other changes.

Treat each permit as evidence for the work described in that permit, not as blanket approval for the entire property.

Does no online permit mean the work was unpermitted?

No. Failing to find a permit online does not by itself prove that the work was performed without approval.

The One Stop App's searchable records begin in 2007, while many New Orleans shotgun houses are much older. A property may also have used another municipal address, contained two addresses when it functioned as a double, undergone work before the searchable period or have records that are easier to locate through a contractor, applicant, permit number or City file.

Absence of an online result is therefore a reason to expand the search, not immediately label the work illegal.

What should you do when the online record is incomplete?

Use the City's permit open-data resources and submit a public records request when the documents you need are not available through the One Stop App.

  • —Retry the legal street address without city, state, ZIP code or unit number.
  • —Search previous or alternate municipal addresses associated with the parcel.
  • —Search the previous owner's name if known.
  • —Search a contractor or applicant shown on another related permit.
  • —Check the City's permit data through the Open Data portal.
  • —Confirm zoning and historic-district information in the Property Viewer.
  • —Request the underlying public file when an important renovation still cannot be explained.

The City directs users to its Open Data permit resources when information is not available through the One Stop App and recommends a public records request when the needed information is not available in either system.

For a century-old shotgun house, that escalation matters because the online database should not be mistaken for the complete physical history of the building.

What address-search problems should you try?

First search the property without the city, state, ZIP code, apartment or unit number, and try alternate street formatting.

The City also advises users to remove the street type when necessary and notes that First through Ninth Streets are spelled out in its address system.

For shotgun houses, an address problem can reflect the property's legal configuration rather than a simple search error. A former double may have historically been associated with two addresses, while a later single-family conversion may use one.

When addresses have changed, include that history in the permit search instead of searching only the number shown on the current listing.

Should you review inspection and final-status records?

Yes. Review the permit summary for inspection entries, review status, comments and whether the permit reached the relevant completion or final status.

The presence of a permit application tells only part of the story. Separate the sequence into the stages shown below.

If you cannot determine from the public record whether a substantial renovation reached the expected inspection stage, ask for the supporting documentation and discuss the discrepancy with the appropriate inspector, permit professional or City department before treating the matter as resolved.

Permit progress to check
Application
Review
Approval
Issuance
Inspections
Final status

How does permit history fit into buyer due diligence?

Permit history helps a buyer understand how the current shotgun house developed from its earlier structure and whether significant visible alterations correspond with available City records.

The permit review sits naturally inside the broader process of evaluating a shotgun home before purchase because building type, current use, renovation history, inspections, historic-district status and physical condition all affect the same property-level due diligence.

A single shotgun may have gained a rear addition. A double may have become one residence. A camelback may have been original or may reflect a later upper-floor addition. A house may have been elevated, structurally repaired or extensively renovated after storm damage.

The permit history creates a dated documentary trail through those changes and helps identify the questions that still need answers.

Is permit research a substitute for a home inspection?

No. Permit research and a home inspection answer different questions and should be used together.

Permit records document what was submitted to or recorded by government agencies. An inspection evaluates the physical condition of the house. Neither automatically proves the other.

An inspector may identify a structural alteration that sends you back to the permit record. A permit description may identify an addition or system replacement that tells the inspector where to pay closer attention.

  • —Permit history.
  • —Physical inspection.
  • —Seller documentation.
  • —Property records.

What should you ask the seller for?

Ask the seller for documentation covering every substantial renovation that materially changed the building, its systems, its footprint or its use.

  • —What major renovations were completed, and when?
  • —Which permit numbers correspond with those renovations?
  • —Were inspections completed for the permitted work?
  • —Are approved plans, contracts, invoices or other project documents available?
  • —Did the renovation change the number of dwelling units, add living area, alter the structure, elevate the house or require historic-district approval?

Then compare those answers with the independent City records.

You are not trying to make the permit database tell you whether to buy the house. You are using it to determine which questions the house still needs to answer.

What is the practical takeaway?

Start with the One Stop permit search, verify the property's zoning and historic status, compare the documented work with the existing house and investigate any material discrepancy before the due-diligence period ends.

For a New Orleans shotgun house, the most useful question is not simply, “Does this address have permits?”

It is: What was this shotgun house originally, what has changed, which changes appear in the City's records and what still cannot be explained?

That approach is especially important when you are looking at a heavily renovated single, a converted double, a camelback, an elevated house or a property inside a historic district.

A permit history cannot tell you everything about a century-old house. It can tell you where to look next.

Key takeaways

  1. 01Start with the legal street address in the One Stop App, then search related records and alternate addresses when needed.
  2. 02The searchable online record begins in 2007, so missing results are a reason to expand the search rather than a conclusion about legality.
  3. 03Compare every substantial visible alteration with the permit scope, status, inspections and related records.
  4. 04Double-to-single conversions, rear additions, camelbacks, elevations and historic-district work deserve property-specific review.
  5. 05Use permit history alongside a home inspection, seller documentation and other property records.

References

  1. 01
    New Orleans One Stop App

    City of New Orleans

  2. 02
    One Stop App Help

    City of New Orleans

  3. 03
    Search permits by address

    City of New Orleans

  4. 04
  5. 05
    Change of use permit

    City of New Orleans

  6. 06
  7. 07
    New Orleans Property Viewer

    City of New Orleans

  8. 08
    Certificate of Appropriateness

    City of New Orleans Historic District Landmarks Commission

  9. 09
    Vieux Carré Commission application process

    City of New Orleans Vieux Carré Commission

  10. 010
    New Orleans Open Data portal

    City of New Orleans

  11. 011
  12. 012
    Address location search help

    City of New Orleans

  13. 013
  14. 014
    What is a shotgun house?

    Shotgun Homes New Orleans

  15. 015
    Doubles and converted doubles

    Shotgun Homes New Orleans

  16. 016
    What is a camelback shotgun house?

    Shotgun Homes New Orleans

My methodology

Open each item to see the scope, definitions and limits behind the article.

Public-record sources+

The article points readers to the City of New Orleans One Stop App, City permit guidance, the Property Viewer, open-data resources and public-records guidance. It treats those records as documentary evidence about recorded work rather than a complete physical history of an older property.

Date limits+

The One Stop App's searchable data is described as running from 2007 to the present. Older work, alternate addresses, prior configurations and records held outside the searchable interface may require additional research.

Property interpretation+

The article treats a mismatch between the house and the available records as a question to investigate, not proof that work was unpermitted or illegal. Permit scope, status, inspections, current condition and legal use must be reviewed at the individual property level.

Scope+

This is a buyer-oriented due-diligence guide, not a home inspection, structural opinion, appraisal, zoning determination, historic-district approval or legal conclusion about a particular shotgun house.