Is it normal for a 20 year old house to settle?

Author: Jerome Ruecker MD  |  Last update: Sunday, March 1, 2026

It is a fact that homes will settle over the years. This is perfectly normal and nothing to worry about.

When should I worry about house settling?

While settling is a normal part of a house's life, excessive settling can lead to structural issues. If you notice significant cracks in walls, doors that stick, or uneven floors, it may be worth consulting a professional to assess the situation.

Can a house still be settling after 20 years?

1 year to 50 years a house can settle a bit at any time. Cracks that go off at 45 degree angles from an opening or vertical are usually signs of minor settling, no big deal. Cracks that run horizontal to the floor, whether they be in concrete drywall or a window/door opening are the ones to keep an eye on.

How much settling is normal in an old house?

The amount of settling generally depends on the composition of the underlying soil, but it's not abnormal to see up to a few inches of sinkage. However, if your house settles more than that, if it settles unevenly, or if it continues to settle over time, you may have cause for concern.

Is a 20 year old house considered old?

Antique-dating a house would classify a home aged 100 years or more as older. In casual conversation--or on HGTV--you're likely to hear houses anywhere from 10 to 25 years called older. So, if you think about it, establishing 50 years as the line of demarcation for older homes is a logical compromise.

House settling vs foundation problems: What's normal and when to worry

Is it smart to buy a house at 20 years old?

Key Takeaways: Most first-time homebuyers make a purchase when they are 35. Buying a house at a young age can mean building equity young and getting a home paid off sooner. Purchasing a house in your 20s or earlier can also mean you feel trapped, unable to move at a moment's notice.

What is the average lifespan of a house?

Courtesy of the artists. The average lifespan of a house in the United States is between 50 and 63 years, from construction to demolition.

Is it worth fixing up an old house?

If the inspection reveals only superficial repairs are needed — things like replacing broken doors/windows, repainting chipped walls, or adding some new shingles, then you've likely found a good investment. If the issues are deeper (think foundation, electrical, plumbing, etc.), then you might want to think twice.

Do houses ever stop settling?

Homes in areas with extreme seasonal changes may take longer to settle due to temperature and humidity shifts. Long-term settlement can continue for several years, especially in regions with significant weather fluctuations or unstable soil.

When should I worry about settlement cracks?

The size and location of wall cracks are key factors to consider. Large cracks wider than 5 millimeters are a cause for concern, especially if they are diagonal, horizontal or above a door frame. These cracks could indicate foundation movement, stress on structural supports or settling issues.

What is an acceptable foundation settlement?

If your foundation is settling into the soil beneath it, experts consider anything more than 1 inch for every 20 feet as too much.

Are cracks normal in old houses?

Luckily, most cracks are completely normal in all sorts of houses, even new builds, and are simply a sign that the house is settling. Other causes of cracks include change in temperature or humidity levels and vibrations from traffic if you live near a busy or fast road.

How long are most house settlements?

Timelines and Expectations for Settlement. The average time it takes to get to settlement depends on a multitude of factors. Traditionally in the DMV real estate market; the average settlement time is approximately 30 days.

How to tell the difference between house settling and foundation problems?

Vertical cracks are often less concerning and may result from normal settling. Horizontal or diagonal cracks, especially those wider than 1/8 inch, may indicate more serious problems. Multiple cracks or those that form a pattern (like stair-step cracks in brick walls) often signal foundation issues.

Will insurance cover house settling?

Generally, foundation cracks or settling aren't covered by your homeowners policy. Your home's foundation is protected under your policy's dwelling coverage, but only for certain perils/events.

Is it normal for old houses to settle?

It is a fact that homes will settle over the years. This is perfectly normal and nothing to worry about. However, knowing when to call in a foundation repair expert will help alleviate unnecessary anxiety and worry.

Can a house continue to settle after 50 years?

Yes, houses can still settle after 50 years, although most of the usual settling will occur in the first few years after construction.

When to be concerned about house settling?

Bowing walls are likely a sure sign of major foundation instability. If foundation walls bow noticeably, wall anchors should be installed to stabilize and straighten them. More extensive repairs to the foundation, crawl space, or basement may also be necessary.

How much house settling is ok?

Wall Cracks

If there are cracks in the same spot of the interior and exterior, then there is likely a foundation issue that needs to be addressed. Vertical cracks that are two to six inches long and less than 1/16th of an inch are often normal settling cracks.

At what point is a house not worth fixing?

When it no longer has “good bones". The “bones” are what hold the house up. The foundation/floor joist, framing and roof joists/trusses. If a good portion of the bones are rotted or damaged by termites or just worn out from age there really isn't any saving the house.

Why do old houses last longer?

Older homes were typically built solidly and meant to last the test of time, compared to modern homes that may be built with flimsier or less-expensive materials. Homes built before air-conditioning became common often have thicker walls and layouts conducive to cross-breezes and air circulation.

What should I repair first in an old house?

Walk through the home and take note of any major issues, from a leaky roof or cracks in your foundation to drafty windows or sticking doors. Structural fixes and roofing repairs are the most important, so make sure you have enough room in your budget to make those repairs first.

Is 20 years an old house?

What is an older home? As a general rule of thumb, homes built after 1990 are considered newer, and homes built before 1920 are considered “old” or “antique.” But housing age is a subjective condition that turns on numerous factors. The most important include: Construction Style and Quality.

What type of house lasts the longest?

Brick. Brick foundations are known for their durability and longevity. Their resistance to moisture, insects, and fire makes them an excellent choice for a long-lasting foundation. Proper maintenance becomes even more crucial in regions with harsh climates, where freeze-thaw cycles can cause damage.

At what age do houses lose value?

However, after 30 years, the depreciation rate increases significantly when the age is measured with the effective age. For a property built more than 30 years ago with an effective age of 1 year, its value will increase over a few years and decrease around an effective age of 15.

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