South Carolina replacement cost calculator

Whether the dwelling coverage on your policy would actually rebuild your house — and what a shortfall costs you at claim time. Planning estimate only, not an appraisal.

South Carolina guide

Making sure you have enough coverage

From Home Insurance in South Carolina: What It Costs and What Actually Covers You

The most consequential number on your policy is your Coverage A limit, and the most common way it goes wrong is setting it to your home's market value or your mortgage balance.

Neither is right. Dwelling coverage should equal the cost to rebuild your home from the foundation up at today's construction prices. Market value includes land, which does not burn. Your mortgage balance is a financing number with no relationship to construction cost.

South Carolina makes this error easy to commit in the direction that hurts. The state's median home price is about $359,900 - well below the national picture - so a homeowner who reasons from market value will set a low limit. But construction costs do not track South Carolina's affordable housing prices, and on the coast, land is a large share of value while inland it is a small one. The only number that matters is construction cost.

Working a real South Carolina example

Rebuilding in South Carolina runs roughly $245 per square foot - the midpoint of a published $180 to $310 band covering materials, labor, and general contractor overhead and profit, excluding land.

On a 2,000 square foot home:

  • 2,000 x $245 = $490,000 to rebuild

This figure deserves an unusually loud caveat, and it is worth stating rather than burying. South Carolina shows one of the widest source disagreements in this entire dataset. The $180 to $310 band is a regional band - South Carolina shares the identical range with Vermont, Virginia, and Wisconsin, which is a strong hint that it is not a South Carolina-specific survey. And one 2026 cross-check series reads South Carolina at $143 per square foot, near the bottom of the country, while another reads $173. Those two series measure a narrower quantity that excludes general contractor overhead and profit, which explains part of the gap but not all of it. No South Carolina building department or insurance regulator publishes a competing figure to settle it.

So take the band seriously:

  • At $180/sq ft: $360,000
  • At $310/sq ft: $620,000

That is a $260,000 spread on the same house. Treat this figure as unusually soft, and get an actual replacement-cost estimate for your specific home - from your carrier, an independent estimator, or a local builder - rather than relying on any per-square-foot rule of thumb. This is one of the states where the rule of thumb is least trustworthy.

Note what the arithmetic still says even at the low end: $360,000 is above the $300,000 reference limit, and above South Carolina's median home price. If you set your Coverage A from what you paid for the house, you are probably short.

The 80% coinsurance rule, and what a shortfall does to a partial claim

Most homeowners policies contain a coinsurance provision requiring you to insure the dwelling to at least 80% of its full replacement cost. Fall below that and the insurer does not merely cap your payout at your limit - it reduces every partial claim proportionally.

Work it on the midpoint example. Full replacement cost $490,000, so the 80% threshold is $392,000. Suppose you carry the $300,000 reference limit and a hurricane does $100,000 of damage. Your limit is three times the loss, so it feels safe. It is not:

  • $300,000 carried / $392,000 required = 0.765
  • 0.765 x $100,000 = $76,531
  • Then subtract your deductible - $1,000 on an ordinary claim, or $6,000 if this was a named-storm claim at 2% of your $300,000 limit
  • Net payment: roughly $70,531 to $75,531 on a $100,000 loss

You are $24,000 to $29,000 short on a claim well inside your policy limit, entirely because Coverage A was set too low. None of that is visible until you file.

Two endorsements worth asking about by name

  • Extended replacement cost - pays a stated percentage above your Coverage A limit, commonly 25% to 50%, when rebuilding costs more than the policy anticipated. Given how soft South Carolina's rebuild-cost data is, and how sharply contractor pricing spikes after a landfalling hurricane, this endorsement is doing real work here.
  • Ordinance or law coverage - as described in Section 3, and especially relevant on coastal properties built before current wind-load and elevation requirements.

Read the full South Carolina guide →18 min read · Updated 2026-08-28