Counties / Louisiana / St. Mary Parish, LA
Home resilience & retrofit ROI in St. Mary Parish, LA
FEMA rates this county's overall natural-hazard risk Relatively Moderate (89/100). For a typical home here, that translates into a resilience score of 33/100 — and a specific, ranked list of upgrades that pay for themselves.
01 The hazards that drive losses here
| Hazard | NRI score | Rating | Est. annual loss, typical home* |
|---|---|---|---|
| Hurricane | 97/100 | Relatively High | ~$979/yr |
| Coastal Flooding | 93/100 | Relatively High | ~$181/yr |
| Riverine Flooding | 50/100 | Relatively Low | ~$157/yr |
| Tornado | 86/100 | Relatively Moderate | ~$26/yr |
| Strong Wind | 46/100 | Relatively Low | ~$7/yr |
| Hail | 43/100 | Relatively Low | ~$4/yr |
*Building-loss rate for this county (FEMA NRI December 2025) applied to a $350,000 wood-frame home built in the 1990s. Your home will differ — run the simulator.
02 Retrofits with the best payback for a typical home
| Retrofit | Installed cost | Simple payback | Lifetime NPV |
|---|---|---|---|
| Hurricane clips / roof-to-wall strapping Metal connectors tying the roof structure to walls so uplift loads have a continuous path to the foundation. |
$800–$2,500 | 3.8 yrs | $5,948 |
| Impact-rated storm shutters Code-rated panels or accordion shutters protecting glazed openings from wind-borne debris. |
$2,000–$6,000 | 10.3 yrs | $2,082 |
| FORTIFIED Roof™ upgrade Sealed roof deck, ring-shank nails, and enhanced edge detail at re-roof time — the single highest-impact wind retrofit for most homes. |
$3,000–$15,000 | 11 yrs | $3,780 |
| Wind-rated garage door or bracing kit Garage doors are the most common first failure in high wind; bracing or a rated door keeps the envelope closed. |
$500–$3,500 | 9.6 yrs | $836 |
| Pipe insulation & freeze protection Insulating exposed runs and adding heat tape where needed — burst pipes are the #1 winter-storm claim. |
$300–$1,200 | 10.4 yrs | $229 |
03 Common questions
What natural hazards matter most in St. Mary Parish, LA?
Based on FEMA National Risk Index expected annual losses, the biggest drivers here are Hurricane, Coastal Flooding, Riverine Flooding. The county's overall NRI risk rating is "Relatively Moderate".
Which home retrofit has the best payback in St. Mary Parish, LA?
For a typical $350,000 home, Hurricane clips / roof-to-wall strapping ranks first — roughly $439/year in combined avoided losses, energy savings, and possible insurance credits, with a ~3.8-year simple payback. Run the simulator with your own home's details for a personalized ranking.
Where does this data come from?
Hazard scores and expected annual losses come from the FEMA National Risk Index (NRI December 2025); electricity prices from the U.S. EIA; retrofit effectiveness and costs from FEMA, NIBS, IBHS and DOE literature. All figures are transparent estimates, not quotes or advice.
Estimates only — not financial, insurance, or engineering advice. Sources & formulas on the methodology page. FEMA NRI December 2025; social vulnerability 76/100; community resilience 88/100.