Rebuilding Your Home Costs More Than the Number on Your Policy
By Joshua Lavine, CEO, Capitol Benefits · Last updated October 22, 2026
Key takeaways
- Replacement cost is what it would take to rebuild your home today, which is a different number from both the purchase price and the market value.
- Construction costs across the DC, Maryland and Virginia market have risen faster than most dwelling limits were adjusted to match.
- Extended or guaranteed replacement cost adds a cushion above the stated limit, which matters most after a total loss.
- Custom millwork, stone and slate are the line items that inflate a rebuild, and they are what a generic square footage estimate misses.
- Ordinance or law coverage pays to bring an older home up to current building code, which standard limits often will not cover in full.
The dwelling limit on your homeowners policy is a rebuild estimate, not your purchase price and not your market value, and across DC, Maryland and Virginia construction costs have climbed faster than most of those limits were adjusted to keep up. Extended or guaranteed replacement cost is the endorsement that adds a cushion above the stated limit, and it matters most in exactly the situation nobody plans for, a total loss.
There is a number on the first page of your homeowners policy called the dwelling limit. Most people glance at it once, decide it looks like a lot of money, and never think about it again.
The question that actually matters is narrower than it looks. It is not whether the number is large. It is whether that number would rebuild your particular house, with your finishes, using the contractors available in this market, in the year the loss happens.
Three different numbers, and only one of them is the right one
Homeowners tend to carry three figures in their heads and mix them up.
The first is what the house cost. That is historical, and it includes the land, which does not burn.
The second is what the house would sell for. That is a market number shaped by schools, commute, interest rates and what the neighbors listed at. It also includes the land, and in much of Montgomery County and Northern Virginia the land is a large share of it.
The third is what it would cost to rebuild. That is the only one insurance cares about, and it is driven by lumber, labor, stone, roofing, permits and how long a crew is on site. In some neighborhoods it sits below market value. In others, particularly where an older or custom home would be expensive to reproduce, it sits well above.
A home that would sell tomorrow for a certain figure can easily cost more than that to rebuild from a hole in the ground. This feels counterintuitive right up until someone is holding a builder’s estimate.
Why the gap opens quietly
Construction costs have moved a great deal in recent years, and a policy written before that shift does not always catch up on its own. Most carriers apply an annual inflation adjustment to the dwelling limit, which helps, but a general index is a blunt instrument for a house with imported stone, custom cabinetry or a slate roof.
Renovations widen the gap further. A finished basement, a primary suite addition, a kitchen with cabinetry that took months to build: each raises what a rebuild costs, and none of them raise the limit unless somebody makes a phone call.
Then there is the total loss, which is what the dwelling limit is really built for. Partial losses are common and rarely approach the limit. A fire that takes the whole structure reaches it immediately, and that is where a shortfall becomes a number a family has to cover themselves.
What closes the gap
In Gaithersburg and across Montgomery County, older housing stock is where this bites hardest. A 1960s split level rebuilt to current county code can cost noticeably more than the original structure, and that difference shows up as a shortfall at exactly the wrong moment. The two endorsements worth asking about are guaranteed and extended replacement cost, and they are not the same thing.
The first tool is a real replacement cost estimate rather than a rough one. Carriers that write high value homes, including Chubb and Cincinnati, will usually complete a detailed reconstruction cost analysis, and often an inspection, so the limit reflects the actual house rather than a square footage average.
The second is extended or guaranteed replacement cost. Extended replacement cost adds a defined cushion above the dwelling limit. Guaranteed replacement cost goes further and commits to rebuilding the home even if the cost runs past the limit. Both exist because estimates are estimates, and because a regional storm can push labor and material prices up in exactly the season you need them.
The third is ordinance or law coverage. If your home predates current building code, the rebuild has to meet today’s requirements rather than the ones in force when it was built. That can mean new electrical, new egress, new structural work. Standard policies limit how much of that they will pay, and older homes in Maryland and DC are exactly where it comes up.
The fourth is loss of use, which pays for somewhere to live while the rebuild happens. A custom rebuild is measured in many months, not weeks, and comparable housing in this area is not inexpensive.
A reasonable next step
Nothing dramatic is required here. Pull out your declarations page, find the dwelling limit, and ask yourself honestly whether that figure would rebuild your house today. If you have renovated in the last several years, or if the limit has only ever moved by small automatic increases, the answer deserves a second opinion.
That review costs nothing and takes one conversation. The alternative is learning the number at the only moment when it can no longer be changed.
Frequently Asked Questions
Why is my dwelling limit different from what my house would sell for?
Because the sale price includes land and the dwelling limit does not. Insurance pays to rebuild the structure, and on an older or custom home the cost to reproduce it can exceed what the whole property would sell for.
What is the difference between extended and guaranteed replacement cost?
Extended replacement cost adds a set percentage above your dwelling limit as a cushion. Guaranteed replacement cost commits to rebuilding the home even if the final cost runs past the limit. Availability depends on the carrier and the home.
Does my policy keep up with construction costs automatically?
Most policies apply an annual inflation adjustment, but it follows a general index rather than your specific home. Custom finishes and recent renovations usually need a manual update.
What does ordinance or law coverage pay for?
It pays the additional cost of rebuilding to current building code rather than the code in force when the home was built. It matters most for older homes in Maryland, DC and Virginia.
How often should the dwelling limit be reviewed?
At least every few years, and any time you complete a significant renovation or addition. A detailed reconstruction cost estimate is the most reliable way to confirm it.
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