Orleans Parish Assessor's Office: Property Assessment and Taxes

The Orleans Parish Assessor's Office is the local government body responsible for determining the assessed value of all taxable property within Orleans Parish, Louisiana. Those valuations form the tax base from which millage rates are applied to calculate annual property tax bills, making the office a central institution in municipal finance. This page covers the office's legal authority, the assessment process, common property owner scenarios, and the boundaries of what the assessor does and does not control.

Definition and scope

The Orleans Parish Assessor operates under authority granted by the Louisiana Constitution, Article VII, §18 and Title 47 of the Louisiana Revised Statutes. The assessor is an independently elected parish official — not an appointee of the mayor or City Council — whose sole mandate is to assess property at a percentage of fair market value as defined by state law. Under Louisiana law, residential property is assessed at 10% of fair market value, while commercial property is assessed at 15% of fair market value (Louisiana Revised Statutes §47:2323).

Orleans Parish is unique in Louisiana because it is a consolidated city-parish, meaning the boundaries of the city of New Orleans and the parish are coterminous. The assessor's jurisdiction covers all real and personal property physically located within those consolidated boundaries. For broader context on how this consolidated structure shapes local governance, the Orleans Parish Government overview provides additional institutional background.

Scope limitations: The Assessor's Office determines assessed value only. It does not set millage rates, collect taxes, or issue tax bills. Those functions belong to separate authorities — millage rates are set by taxing bodies including the New Orleans City Council, the Orleans Parish School Board, and other levying districts, while tax collection is handled by the New Orleans Revenue Collection Bureau. Property located in Jefferson Parish, St. Bernard Parish, or any jurisdiction outside Orleans Parish boundaries is not covered by this resource.

How it works

The assessment cycle follows a structured sequence:

1. Annual review of property characteristics — The assessor's staff reviews physical property data, including square footage, construction type, age, and condition, using field inspections and aerial imaging.
2. Market analysis — Sales data from arm's-length transactions across Orleans Parish is analyzed to establish fair market value benchmarks by neighborhood and property type.
3. Value assignment — Each parcel receives a fair market value estimate; the assessed value is then calculated at the statutory percentage (10% residential, 15% commercial).
4. Tentative assessment roll publication — The assessor publishes tentative assessments during a designated open-roll period, typically in late summer of reassessment years, during which property owners may review their values.
5. Appeal window — Property owners who dispute their assessed value may file a formal appeal first with the assessor, then with the Louisiana Tax Commission if not resolved, and ultimately with the Louisiana courts.
6. Final roll certification — After the appeal period closes, the assessor certifies the final assessment roll and transmits it to taxing authorities.

Louisiana law requires a parish-wide reassessment every four years. The Louisiana Tax Commission (LTC) oversees statewide uniformity and has authority to order corrections if any parish's assessments deviate significantly from market-derived standards.

Homestead exemption: Louisiana's homestead exemption reduces the assessed value of an owner-occupied primary residence by $7,500, effectively exempting the first $75,000 of fair market value from most property taxes (Louisiana Constitution, Article VII, §20). The exemption must be applied for at the assessor's office and is not automatically applied to newly acquired properties.

Common scenarios

Scenario 1 — New purchase reassessment. When a property transfers ownership, the assessor may update the fair market value estimate to reflect the sale price, particularly if the prior assessment was below market. A buyer who acquires a property at $400,000 may see the assessed value recalculated from a previously lower figure, directly affecting the next tax bill.

Scenario 2 — Renovation or improvement permits. When the New Orleans Department of Safety and Permits issues a building permit for additions or major renovations, that data becomes available to the assessor. A permitted addition that adds square footage or improves condition classifications can trigger an upward reassessment.

Scenario 3 — Damage or deterioration. Property owners whose buildings suffer storm damage, fire, or significant deterioration may request a reassessment downward. Supporting documentation — contractor estimates, photographs, insurance adjusters' reports — is required to substantiate reduced value claims.

Scenario 4 — Commercial versus residential classification dispute. A mixed-use building partially occupied for commercial purposes and partially as a residence may be subject to competing classification arguments. The assessor determines the allocation, which has meaningful financial consequences: the 15% commercial rate applied to a $500,000 commercial fair market value produces an assessed value of $75,000, while the 10% residential rate on the same figure produces $50,000.

Decision boundaries

The assessor's authority is strictly limited to valuation. Several adjacent functions are outside the office's scope:

• Tax rate setting is a legislative function performed by individual taxing bodies, each of which adopts millage rates through a separate public process. The full resource at /index provides orientation to the broader New Orleans government structure and the agencies involved in that process.
• Tax bill issuance and collection — Property owners with questions about payment deadlines, delinquencies, liens, or payment plans must contact the Revenue Collection Bureau, not the assessor.
• Zoning and land-use classification — Whether a parcel is zoned residential, commercial, or industrial is determined by the New Orleans City Planning Commission and the New Orleans Zoning and Land Use framework. The assessor uses zoning as contextual data but does not control it.
• Mortgage escrow disputes — Disagreements between property owners and mortgage servicers over escrow account calculations based on tax bills are private contractual matters outside any government assessor's jurisdiction.
• Properties outside Orleans Parish — Owners of property in Jefferson Parish, St. Tammany Parish, or any other neighboring jurisdiction must engage those parishes' separate assessors. Jefferson Parish Government and St. Tammany Parish Government each maintain independent assessment offices operating under the same Louisiana constitutional framework but entirely separate from the Orleans Parish Assessor.

Appeals that proceed beyond the assessor's office level enter the Louisiana Tax Commission's jurisdiction. The LTC has authority to order reassessments, adjust individual parcels, and issue compliance orders to any assessor whose rolls fail to meet statutory uniformity standards.

References

• Louisiana Constitution, Article VII, §18 — Property Tax Assessment
• Louisiana Constitution, Article VII, §20 — Homestead Exemption
• Louisiana Revised Statutes §47:2323 — Assessment Percentages
• Louisiana Tax Commission
• Orleans Parish Assessor's Office
• Louisiana Legislative Auditor — Local Government Audit Reports
• Louisiana Division of Administration — Office of Property Tax