The Marks Agency Blog

Is Your North Idaho Home Underinsured?

Understanding Your Policy 6 min read By John Marks

Here's a question most homeowners never think to ask: if your house burned down tomorrow, would your insurance actually pay enough to rebuild it?

For a surprising number of North Idaho homeowners, the answer is no. Not because they bought bad insurance, but because the cost to rebuild has outpaced their coverage — and nobody told them. Construction costs in our region have risen sharply over the past several years, and policies written even three or four years ago may no longer reflect reality.

Being underinsured is one of the most common and most devastating insurance mistakes a homeowner can make. And the worst part is: you won't know it until it's too late — unless you check now.

What "Underinsured" Actually Means

Your home insurance policy has a number called Coverage A — Dwelling. This is the maximum amount your insurer will pay to rebuild your home after a covered total loss. If the actual cost to rebuild exceeds that number, you pay the difference.

That gap — the difference between what your policy covers and what it would actually cost to rebuild — is what it means to be underinsured.

Here's the critical distinction that confuses most people: Coverage A is based on rebuild cost, not market value. Your home's market value includes the land, the neighborhood, the school district, the proximity to the lake. The rebuild cost is just materials, labor, permits, and site work — what it would cost a contractor to construct your home from the foundation up.

These two numbers are often very different. In Sandpoint, a modest 1,800 sq ft home might sell for $550,000 because of the location, but cost $380,000 to physically build. Conversely, a large custom home on less desirable land might sell for $400,000 but cost $500,000 to rebuild because of the materials and craftsmanship involved.

Why North Idaho Homeowners Are Especially At Risk

Several factors make underinsurance more common in our area than in a typical suburban market:

Construction costs have spiked

Lumber, roofing, concrete, labor — everything that goes into building a home costs significantly more than it did five years ago. National estimates put the increase at 25-40% since 2020. In rural markets like North Idaho, where contractor availability is tighter and materials sometimes need to be shipped farther, the increase can be even steeper.

If your policy was written in 2019 or 2020, your dwelling limit was based on pre-spike costs. Even with the automatic inflation adjustment most carriers apply (typically 3-5% per year), it probably hasn't kept pace with the actual increase.

Custom and unique homes are hard to estimate

North Idaho has a lot of custom homes, log cabins, post-and-beam construction, and unique properties that don't fit neatly into a cost-per-square-foot calculator. If your home was estimated using a generic tool, the rebuild cost could be significantly off in either direction.

A-frame cabins, hand-hewn log homes, homes with custom stonework, and properties with extensive outbuildings all require more careful estimation. An agent who's never been to North Idaho is going to struggle to get these right.

Outbuildings and "other structures" add up

Many North Idaho properties — especially farms and rural land — have detached garages, workshops, barns, sheds, docks, fences, and retaining walls. Your policy's Coverage B (Other Structures) is typically set at 10% of your dwelling limit by default. If you have $300,000 in dwelling coverage, that's only $30,000 for all other structures combined. If your detached garage alone would cost $40,000 to rebuild, you're already short.

Remote and rural properties cost more to rebuild

If your home is on a long driveway, a rural road, or a difficult-to-access site, contractors charge more to build there. Equipment delivery, longer commutes for crews, and limited utility access all add cost that a standard calculator doesn't capture.

The Coinsurance Trap

Here's something most homeowners don't know: being underinsured can reduce your payout even on partial claims, not just total losses.

Many policies include a coinsurance clause. It typically requires you to insure your home to at least 80% of its rebuild cost. If you fall below that threshold, the insurer can reduce your claim payment proportionally.

Here's an example: your home costs $400,000 to rebuild. The 80% coinsurance threshold is $320,000. But your dwelling limit is only $280,000. You file a $50,000 claim for roof damage from a tree. Instead of paying the full $50,000 (minus deductible), the insurer calculates: $280,000 ÷ $320,000 = 87.5%. They pay 87.5% of your $50,000 claim, or $43,750. You eat the $6,250 difference plus your deductible.

This catches people completely off guard. They assume since their claim is well under their coverage limit, they'll get paid in full. But the coinsurance clause penalizes them for being underinsured at the policy level.

How to Check If You're Underinsured

This takes about 15 minutes, and it's one of the most important things you can do as a homeowner:

  1. Find your declarations page. Look at the Coverage A (Dwelling) number. This is your current rebuild limit.
  2. Estimate your actual rebuild cost. The most accurate way is to have your local agent run a replacement cost estimator — a tool that factors in your home's square footage, construction type, materials, features, location, and current labor costs. This is not the same as a Zillow estimate or your property tax assessment.
  3. Compare the two numbers. If your Coverage A is within 10% of the estimated rebuild cost, you're probably fine. If it's more than 10% below, you're underinsured and should increase it.
  4. Check Coverage B (Other Structures). Add up the estimated rebuild cost of every detached structure on your property. Is 10% of your dwelling limit enough to cover them? If not, increase Coverage B separately.
  5. Look for Extended Replacement Cost. This endorsement adds a 25-50% buffer above your dwelling limit. It's not a substitute for accurate coverage, but it's a valuable safety net. If you don't have it, ask your agent about adding it.

What to Do If You're Underinsured

The fix is straightforward: increase your dwelling limit to match the actual rebuild cost. Yes, your premium will go up — because you're now insuring the real amount instead of a fiction. But the alternative is paying the difference out of pocket after a loss, which could be $50,000, $100,000, or more.

If the increased premium feels steep, there are ways to offset it:

  • Raise your deductible (saves premium without reducing coverage)
  • Bundle policies for a multi-policy discount
  • Ask about discounts (new roof, security, claims-free, paid-in-full)
  • Remove coverage you don't need (scheduled items you no longer own, etc.)

The goal is to be accurately insured — not over-insured and not under-insured. A good agent helps you find that sweet spot.

The Bottom Line

Underinsurance is a silent problem. It doesn't announce itself. Your premium payments go through fine, your policy looks active, and everything seems normal — right up until the moment you need the coverage and discover it's not enough.

Spending 15 minutes checking your dwelling limit against current rebuild costs is one of the most valuable things you can do as a homeowner. If you'd rather have a professional do it, that's what we're here for. Our free insurance review includes a replacement cost check — and if your current coverage is fine, we'll tell you that too.

"The most common thing I see when reviewing a new client's policy is that their dwelling limit is $50,000 to $100,000 below where it should be. Not because they did anything wrong — because construction costs moved and nobody updated the number."

— John Marks, Marks Insurance Agency

Frequently Asked Questions

How do I know if my home is underinsured?
Compare your Coverage A (dwelling) limit on your declarations page against the actual cost to rebuild your home at today's construction prices. If your dwelling limit is lower than the rebuild cost, you're underinsured. In North Idaho, construction costs have risen 25-40% since 2020, so any policy written before that without updates is likely insufficient. A local agent can run a replacement cost estimator in about 10 minutes to give you an accurate number.
What's the difference between market value and rebuild cost for insurance?
Market value is what your home would sell for today — it includes the land, the location, the neighborhood, and the current real estate market. Rebuild cost is the raw expense of constructing your home from scratch: materials, labor, permits, debris removal, site prep. Insurance is based on rebuild cost, not market value. A $600,000 home in a desirable Sandpoint neighborhood might only cost $400,000 to rebuild — or a modest home on expensive lakefront land might cost $350,000 to rebuild but sell for $700,000. They're completely different numbers.
What happens if I file a claim and my home is underinsured?
If your dwelling limit is less than the actual rebuild cost, you pay the difference out of pocket. For a total loss (fire, for example), this could be tens or hundreds of thousands of dollars. For partial losses, many policies include a coinsurance clause — if your coverage is below a certain threshold (usually 80% of rebuild cost), the insurer may only pay a proportional share of even a smaller claim. Being underinsured doesn't just hurt you on big losses; it can reduce payouts on small ones too.
How often should I update my home insurance dwelling coverage?
Review your dwelling limit annually at renewal time, and update it any time you make significant improvements — additions, major renovations, kitchen or bathroom remodels, finished basements, new outbuildings. Most carriers apply an automatic inflation guard (3-5% per year), but that often doesn't keep pace with actual construction cost increases, especially during periods of rapid inflation like 2020-2024.
Does extended replacement cost protect me if I'm underinsured?
Partially, yes. Extended Replacement Cost is an endorsement that adds a buffer — typically 25-50% — on top of your dwelling limit if actual rebuild costs exceed your coverage. So if your dwelling limit is $300,000 and you have 25% extended replacement cost, the policy could pay up to $375,000. It's valuable insurance against cost overruns and underestimation, but it's not a substitute for setting your base dwelling limit accurately. Not all policies include it — check your dec page or ask your agent.

What's Next?

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