Counties / South Dakota / Custer County, SD
Home resilience & retrofit ROI in Custer County, SD
FEMA rates this county's overall natural-hazard risk Very Low (16/100). For a typical home here, that translates into a resilience score of 43/100 — 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* |
|---|---|---|---|
| Wildfire | 94/100 | Relatively Moderate | ~$537/yr |
| Riverine Flooding | 19/100 | Very Low | ~$421/yr |
| Hail | 44/100 | Relatively Low | ~$25/yr |
| Tornado | 22/100 | Very Low | ~$21/yr |
| Winter Weather | 60/100 | Relatively Low | ~$10/yr |
| Strong Wind | 16/100 | Very Low | ~$8/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 | 6.8 yrs | $2,557 |
| Ember-resistant vents & soffits Most homes ignite from embers entering attic and crawlspace vents, not the flame front. Mesh and baffle retrofits close that path. |
$1,000–$4,000 | 10.9 yrs | $1,098 |
| Defensible space & ember-resistant zone Clearing the 0–5 ft zone and managing vegetation to 30 ft — the highest-leverage, lowest-cost wildfire action. |
$500–$3,000 | 5.7 yrs | $725 |
| 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 yrs | $274 |
| Sewer backflow prevention valve One-way valve that stops storm-surcharged sewers from backing up into the lowest drains in the house. |
$600–$2,500 | 15.2 yrs | $45 |
03 Common questions
What natural hazards matter most in Custer County, SD?
Based on FEMA National Risk Index expected annual losses, the biggest drivers here are Wildfire, Riverine Flooding, Hail. The county's overall NRI risk rating is "Very Low".
Which home retrofit has the best payback in Custer County, SD?
For a typical $350,000 home, Hurricane clips / roof-to-wall strapping ranks first — roughly $243/year in combined avoided losses, energy savings, and possible insurance credits, with a ~6.8-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 11/100; community resilience 47/100.