Thomas Marr spent 11 months patrolling Baghdad in the gun turret of a Bradley Fighting Vehicle. He returned home to Kenner, La., just in time to face eviction from his mobile home park.

"I came home from one war zone to this," said Marr, 39, who plans to start over again in Austin, where his wife and two children sought refuge from Hurricane Katrina.

The permanent relocation of evacuees has already shrunk the local labor pool in the New Orleans area. Now, 21/2 months after Katrina hit on Aug. 29, a second exodus may be developing as many longtime residents are forced out by a housing squeeze that has caused rents to surge by as much as 100 percent.

Many landlords are seeking to reclaim and renovate units abandoned by tenants who fled the storm, which wiped out 200,000 houses in the area, a third of the pre-Katrina total. Other owners are reaping a rent windfall from the shortage or clearing out trailer parks to lease land to the Federal Emergency Management Agency, which needs spots to temporarily house the displaced. Fueling the shortage is competition from thousands of people contracted by FEMA to come to New Orleans for recovery work.

"The economic repercussions are profound," said Bruce Katz, director of the Metropolitan Policy Program at the Washington-based Brookings Institution. "The recovery is going to be slowed. Your workforce is not going to be reliable."

A moratorium on evictions that Louisiana Gov. Kathleen Babineaux Blanco (D) imposed expired Oct. 25. The next day, constables in the New Orleans area were serving record numbers of notices telling tenants to leave. While renters get their day in court, most lose because state and local laws allow eviction without cause for those on month-to-month leases or if the landlord can claim the dwelling is destroyed, tenant advocates say.

New Orleans Mayor Ray Nagin has asked the city council and state legislature to consider limiting the amount landlords are allowed to raise their rents.

"The housing challenge, both temporary and long term, is the No. 1 issue," Nagin said. "Pre-Katrina, you could rent a decent place for $400 or $500 a month. Now, some landlords are charging $1,000 or $1,500."

If anything, the situation may get worse. A measure that passed the state House of Representatives on Nov. 9 would permit a landlord to evict tenants who left under mandatory evacuation and haven't made rent payments. The owner could dispose of anything deemed ruined after posting a notice on the door.

After complaints from tenant groups, amendments are under consideration for the Senate version that include requiring the landlord to document claims that possessions were ruined.

"It is essentially a landlord-immunity bill," said Stacy Seicshnaydre, an associate professor at Tulane Law School in New Orleans. A measure that would block rent-price gouging has been sitting in a legislative committee of the House since Nov. 6.

FEMA, which took so much criticism over its handling of Katrina that Director Michael Brown resigned in September, is the focus of much of the local ire again. FEMA and other agencies have deployed about 5,500 federal employees in Louisiana and have contracted with thousands more to do everything from hauling debris to putting temporary roofs on homes.

Much of the housing rush is in Jefferson Parish, which encompasses the towns of Kenner and Metairie, both within 20 miles west of New Orleans.

Glenn Gardner's Metairie-based Prudential Gardner Realtors listed a 1,600-square-foot, three-bedroom house in Ormond at $1,100 a month. After a bidding war, it rented for $1,500, up from $800 previously. In Metairie, a duplex apartment fetched $1,800 a month, double the pre-Katrina amount, Gardner said.

Marr, the Bradley gunner, is losing both a place to live and his biggest asset, a mobile home in the Sharon Park trailer park in Kenner, which he said he just spent thousands of dollars to renovate. Park tenants received eviction notices Nov. 12.

"She wants that FEMA money," he said of landlady Jacqueline Whitsell. "I thought FEMA was supposed to be helping people."

Marr said Whitsell told Sharon Park residents she was going to clear the 50 mostly decrepit trailers off her land and rent the cleaned-up park to FEMA, which is leasing lots throughout the area to bring in trailers for displaced residents.

The Marrs doubt their trailer can withstand a move, even if they could find a place to take it. "We're lowest on the totem pole," said Marr, an air-conditioning technician in civilian life who is still on active duty with the Louisiana National Guard.

Whitsell said she hasn't got a deal with FEMA, yet confirmed she plans to bulldoze anything left on her land, which she said is uninhabitable after Katrina. "If FEMA comes along, God bless them," she said.

James McIntyre, a FEMA spokesman in Baton Rouge, said his agency only contracts for space available at the time of a site visit. "At no time will FEMA make someone homeless to house someone," he said.

FEMA signed a contract with Wayne Breaux, owner of another Kenner trailer park, Airline Oaks, on Oct. 7 for a year lease for 77 mobile home pads and 13 travel trailer pads. Antoinette Landry and others interviewed at the park say they received notice on Oct. 10 that they had to leave by the end of the month. FEMA said that's not what the agency had in mind.

"We did not sign a contract with any intent of him evicting anyone," McIntyre said of Breaux. No FEMA trailers had been placed at the park, near the New Orleans airport, as of Nov. 8. Breaux didn't return phone calls seeking comment.

The current residents pay about $320 a month for their mobile home lots. FEMA agreed to pay $800 for each of 77 spots, said Larry Orluskie, a spokesman for the Department of Homeland Security, which oversees FEMA.

More displacement may be on the way. As of Nov. 11, FEMA had already leased spaces for 6,763 travel trailers in the eight parishes of the New Orleans area, and the agency is negotiating leases or constructing sites for another 44,105, McIntyre said.

Katrina victims last week filed a class action lawsuit against FEMA in U.S. District Court in eastern Louisiana, asking that the agency be forced to provide more housing assistance. They also want FEMA to stop evicting trailer park residents from their homes to make room for other displaced people.