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Leak Detection & Repair in New Orleans, Louisiana

Found 11 local pros· Pricing updated Apr 2026

Compare leak detection & repair contractors serving New Orleans and Orleans Parish. Read ratings, confirm Louisiana licenses, and contact pros directly — free for homeowners.

Typical local cost:$525

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All home services in New Orleans · Leak Detection & Repair across Louisiana

Before hiring a leak detection & repair contractor in New Orleans

  • Verify the contractor's license with our free license lookup tool (checks the state board's records).
  • Confirm insurance is current. Ask for a Certificate of Insurance (COI).
  • Regional utilities include Electric: Entergy Louisiana, DEMCO, Cleco; Gas: CenterPoint Energy, Atmos Energy.
  • Get the full scope in writing before work begins (what's included vs. add-ons).
  • Ask about response time and workload during subtropical humid seasons.
  • Compare at least 2 quotes for larger jobs.
  • Not sure what license or insurance a leak detection & repair pro actually needs in Louisiana? Read our Plumber licensing & insurance guide.

About leak detection & repair in New Orleans

Leak detection in New Orleans is complicated by the same conditions that make the city distinctive: the mix of housing types, the high water table, and the prevalence of century-old infrastructure in older neighborhoods. A leak in a 1920s shotgun on raised piers requires different detection techniques than a leak in a 1960s slab home in Lakeview, and the cost and complexity of repair vary accordingly.

What leak detection costs in New Orleans

Professional leak detection in New Orleans runs $295 to $725 for a single-location detection job. The diagnostic uses a combination of acoustic listening, thermal imaging, and pressure testing — the same equipment used elsewhere, but the work tends to take longer in older homes because of access constraints and the more complex pipe routing in century-old buildings.

Repair costs vary widely. Simple supply line repair in a wall runs $450 to $1,100. Slab leak repair in mid-century Lakeview, Gentilly, or Algiers runs $1,800 to $4,500. Crawlspace pipe repair under a raised pier home runs $600 to $2,500 depending on access. Many local leak detection companies credit part or all of the detection fee toward repair work if you proceed with the same company.

How leaks present differently in different New Orleans housing types

In raised-pier homes — most pre-1940 shotguns, doubles, and cottages — leaks under the home are usually visible during inspection because the crawlspace is accessible. Detection costs are lower because you don't need acoustic equipment to find what you can see. The catch is that crawlspace work is physically difficult and time-consuming, so repair costs may not be lower than slab work.

In slab-on-grade homes — most post-1960 Lakeview, Gentilly, Pontchartrain Park, and Algiers construction — leaks beneath the slab require the full acoustic-thermal-pressure detection workflow. Symptoms include warm spots on tile floors, unexplained spikes in water bills, the sound of running water when no fixture is on, and reduced overall water pressure.

In elevated post-Katrina rebuilds, plumbing systems are typically modern PEX with PVC drains, and leaks are most often fixture-level rather than supply-line. Detection is straightforward and repairs are usually quick.

What drives leaks in New Orleans homes

For older homes, the dominant factor is age — galvanized supply lines installed 60+ years ago corrode from the inside out and eventually fail. Cast-iron drains crack as they corrode. For mid-century slab homes, the issue is similar to Baton Rouge: slab-embedded copper supply lines develop pinhole leaks over decades, and the soil movement common to coastal Louisiana stresses joints. For homes near the lake or river, salt-air exposure and consistently high humidity accelerate corrosion in any exposed metal pipe.

Choosing a leak detection company in New Orleans

The best leak detection companies own (rather than rent) their equipment, hold current Louisiana plumbing licenses, and can perform both detection and repair in-house. Coordination matters — when detection and repair happen in the same crew, less information gets lost between teams. Check the company's current Louisiana plumbing license yourself before work starts — companies that complete our verification process carry a Verified badge. Comparing options first? See our ranked guide to the best plumbers in New Orleans.

Common questions about leak detection & repair in New Orleans

How much does leak detection cost in New Orleans?
Professional leak detection runs $295-$725. Repair costs are separate: simple wall repairs $450-$1,100, slab leak repair $1,800-$4,500, crawlspace pipe repair $600-$2,500.
How can I tell if I have a slab leak in my New Orleans home?
Warm or damp spots on tile floors, unexplained increases in water bills, the sound of running water when no fixture is on, and reduced water pressure are common signs. Most common in mid-century Lakeview, Gentilly, and Algiers slab homes.
Do shotgun houses get slab leaks?
No — shotgun houses are typically built on raised piers with crawlspaces, so they do not have slab leaks. They get crawlspace pipe leaks instead, which are usually easier to find but can be physically difficult to repair.
Why do New Orleans homes near the lake have more pipe leaks?
Salt-air exposure and persistent high humidity accelerate corrosion in exposed metal pipes. Homes in Lakeview, Bucktown, and along the lakefront commonly see faster degradation of outdoor and crawlspace plumbing.
Will the leak detection fee be credited toward repair?
Many New Orleans leak detection companies will credit part or all of the detection fee toward the repair if you use the same company. Confirm before booking.
Do post-Katrina rebuilds have fewer leaks?
Generally yes. Homes rebuilt after 2005 typically use modern PEX supply lines and PVC drains, which have far lower leak rates than the galvanized and cast-iron systems they replaced.

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About New Orleans

New Orleans sits below sea level inside Orleans Parish, where 95% humidity and year-round subtropical heat put extraordinary stress on home cooling, ventilation, and plumbing systems. The city's housing mix runs from 19th-century Creole cottages and shotgun houses in the Marigny and Bywater to mid-century ranch homes in Lakeview and modern construction in Lower Garden District infill projects. Most older homes have ductwork in unconditioned attics, original cast-iron drain lines, and electrical service that predates ground-fault requirements. Post-Katrina elevation requirements have driven a wave of crawlspace conversions and slab work, while regular hurricane season demands resilient HVAC and electrical infrastructure. Homeowners across Mid-City, Uptown, Algiers, and the French Quarter share common service needs: humidity-resistant air handling, sewer line repair through tree-root-heavy yards, mold-aware air duct cleaning, and licensed electrical work that meets Orleans Parish code. GulfServicePros lists established New Orleans companies with ratings shown, so you can compare pros who understand the city's building stock, parish permit process, and climate-driven service patterns. Contractors that complete our verification process carry a Verified badge.