The visible space beneath a raised shotgun is often called a basement casually. In property and flood review, that word needs more care.
Written by Ryan Roberts
Ryan Roberts is a New Orleans real estate agent focused on shotgun homes and historic residential property.
Crawlspace, basement and raised basement are different
New Orleans code defines a basement by its relationship to grade: a story whose floor is below ground level on all sides. A typical pier-supported shotgun instead has its principal floor above grade with a shallow open or screened space beneath it.
| Term | Basic relationship | Do not assume |
|---|---|---|
| Crawlspace | Space between grade and a raised floor | That it is dry, accessible or compliant |
| Basement | Floor below grade on all sides under the cited city definition | That it is permitted for occupancy |
| Raised basement | Principal story above a taller lower level | That the lower level is below grade or habitable |
| Lower enclosure | Walls added beneath an elevated floor | Its age, permitted use or flood compliance |
Why conventional below-grade basements are uncommon
Traditional local wood-frame construction commonly uses piers and a raised floor rather than excavated space. New Orleans also manages groundwater, subsidence and floodplain conditions that make below-grade design a property-specific engineering problem, not a casual extension of the familiar crawlspace.
There is no single water-table depth that explains every parcel. The city’s monitoring program tracks changing groundwater conditions, which is a reason to avoid unsupported universal claims.
The raised-house guide explains how foundation and flood elevation questions overlap without being the same thing.
What a lower enclosure can—and cannot—tell you
A finished-looking lower area does not establish legal occupancy, insurability or flood compliance. Materials, utilities, ceiling height, egress, ventilation, flood openings and the elevation of the regulated lowest floor can all matter.
City flood provisions treat basements and lowest floors specifically in regulated construction. Current rules and the property’s project history need to be applied by the appropriate professionals; a listing label or photograph cannot resolve them.
How to verify the space beneath a shotgun
Use the permit records, flood-risk guide and inspection guide together; each answers a different part of the question.
- —Identify whether the floor is above or below surrounding grade on every side.
- —Compare the current enclosure with surveys, assessor data and permit records.
- —Review flood-zone information and an elevation certificate when available.
- —Have foundation, drainage, moisture, utilities and materials inspected.
- —Confirm permitted use before valuing the space as living area.
Frequently asked questions about shotgun house basements
Is the crawlspace a basement?
Usually not under the cited city definition. A crawlspace is beneath a raised floor, while a basement floor is below grade on all sides.
What is a raised basement?
It is a form with the principal story elevated above a substantial lower level. The lower level is not necessarily below grade or approved as living area.
Can the space under a raised shotgun be finished?
Possibly, but use, flood, structure, utilities, height, egress and permits require property-specific review before work or valuation.
How do I verify permitted use?
Compare permit and land-use records with the physical space and obtain the appropriate professional or agency confirmation.
Key takeaways
- 01Most New Orleans shotguns have crawlspaces, not conventional basements.
- 02Raised basement and below-grade basement are not synonymous.
- 03A lower enclosure’s appearance does not establish permitted use.
- 04Records, flood data and inspection should be reconciled before value is assigned.
References
- 01Code §78-55 definitions
City of New Orleans
- 02Flood damage prevention code
City of New Orleans
- 03Mid-City Historic District nomination
National Park Service
- 04Groundwater Monitoring Network
City of New Orleans
- 05Residential Loss Avoidance Assessment
City of New Orleans
My methodology
Open each item to see the scope, definitions and limits behind the article.
Research date+
Current municipal code pages, city studies and National Register documentation were reviewed on August 31, 2026.
Definition method+
The article distinguishes spaces by grade relationship and construction rather than by casual listing terminology.
Scope+
Permitted use, flood treatment, condition and living-area treatment require property-specific records and qualified review.