Parts of Louisiana have quietly climbed to the top of a list no one wants to lead: the nation’s worst concentrations of deeply underwater mortgages. Several parishes are posting rates far above the national average, leaving many homeowners stuck with thin or no equity, less able to move, and more vulnerable to a sudden job loss or pay cut that could end in foreclosure. The numbers, published this month in a national housing-risk dataset, are already on the radar of local officials and housing advocates.
What the data show
According to ATTOM, the U.S. counties with the highest shares of seriously underwater mortgages are heavily clustered in Louisiana. Ouachita Parish tops the list at 17.4%, followed closely by Calcasieu Parish at 17.1% and Tangipahoa Parish at 15%. The analysis also flags Ascension and Rapides parishes as areas with double-digit shares that tower over the national rate. In all, ATTOM ranked roughly 580 counties using a composite of market-stress indicators to build its risk list.
How "seriously underwater" is defined
As reported by Realtor.com, the ATTOM data classify a property as "seriously underwater" when outstanding loan balances meaningfully exceed the home’s estimated market value. Nationwide, about 3.2% of mortgaged homes fell into that category in the first quarter of 2026. In parishes where the rate climbs into double digits, a sizable share of owners are left with little or no equity to refinance, sell, or weather a sudden hit to their income. When that kind of negative equity is concentrated in particular neighborhoods, it can turn into broader community problems if prices slip further or job losses spread.
Why Louisiana stands out
ATTOM’s companion home-equity release shows Louisiana posting one of the highest state shares of seriously underwater mortgages in the latest data. That helps explain why multiple parishes land so close to the top of the national risk rankings. The framework behind those rankings blends foreclosure activity, the share of underwater loans, housing affordability relative to local wages, and local unemployment. Markets with weaker job bases and softer price trends naturally rise to the top of the risk list. In Louisiana, recent industry shifts, uneven wage growth, and lingering post-pandemic price softness have combined to leave certain parishes especially exposed.
Local ripple effects
The Baton Rouge Business Report notes that housing stress is layering on top of longer-running problems for the state, including population loss and residents moving out of particular parishes. National analysts say a rising share of underwater mortgages tends to chill buyer demand, chip away at local tax bases, and make it harder for people to relocate for better jobs, outcomes that can amplify economic strain at the parish level. Local officials and lenders are keeping a close eye on foreclosure filings, employment data, and home-price trends as early warning signals of whether the trouble spreads.
Practical steps for homeowners
Homeowners who find themselves in negative equity or struggling with payments are urged to contact their loan servicer quickly and to seek free help from a HUD-approved housing counselor. The federal agency provides guidance and a hotline focused on foreclosure prevention. For details on options and how to find a counselor, see the U.S. Department of Housing and Urban Development. Counselors can walk borrowers through loss-mitigation choices, help them talk with servicers, and connect them with any local assistance programs that may be available.
What to watch next: whether parish-level foreclosure filings begin to rise and whether local wages or job numbers weaken, since either trend would deepen the risk highlighted in the ATTOM dataset. For now, the new figures at least give residents and elected officials a clearer map of where housing vulnerability is most concentrated across Louisiana.
