Many Hamilton County, IN, Homes Are 30+ Years Old: Here’s Why That’s a Problem for Foundations
Indiana is full of picturesque parks and quaint villages—the epitome of Midwest charm and hospitality. We’re not short on natural and architectural beauty, nor are we short on foundation issues in Indiana homes.
If your home in Southwestern Hamilton County, Indiana, was built before 1990, it has endured decades of heavy rains, snow, and soil shifts—all of which can put stress on your foundation. With 9,557 out of 14,352 homes built in the 1990s and before, over 65% of homes in Carmel are now 30+ years old, making foundation issues like cracks in walls more likely.
This guide will help you:
- Recognize common signs of foundation problems
- Understand what causes foundation issues in Indiana homes
- Learn simple DIY checks before calling a professional
- Know when to schedule an expert foundation inspection
Why Are Older Homes in Hamilton County More Prone to Foundation Issues?
Just as we all age and experience aches and pains at different stages of our lives, our homes essentially go through the same aging process.
With the vast majority of homes in Hamilton County—specifically, the City of Carmel—built before 1990, many foundations are reaching the age where wear and tear becomes noticeable. Indiana’s climate and soil conditions make foundation issues even more common.
How Age Affects Your Home’s Foundation

- Over time, concrete foundations weaken due to soil shifts and weather exposure.
- Older construction methods didn’t include modern reinforcement or waterproofing techniques, making homes more prone to cracks and leaks.
- Settling occurs naturally, but after 30+ years, minor cracks can expand into structural problems.
Why Indiana Homes Experience More Foundation Problems
- Heavy Rain & Snow: Carmel receives more than an average of 42 inches of precipitation annually. This excess moisture erodes soil under the foundation, causing it to sink or shift.
- Freeze-Thaw Cycles: Indiana freeze-thaw cycle foundation damage is inevitable as winters cause water in the soil to expand and contract, adding stress to foundation walls.
- Expansive Soil: Some areas have clay-rich soil that expands when wet and shrinks when dry, leading to foundation movement.
Common Foundation Issues In Indiana Homes
Not sure if your foundation is holding up? Use this quick checklist.
Signs of Foundation Problems
Cracks in walls or ceilings
What They Mean
Structural movement from settling or soil shifts
Foundation shifts may alter the alignment
Sinking foundations or foundation shifting
The home is settling unevenly
Water is seeping through foundation cracks
What to Do
Monitor small cracks, call for large ones
Check for gaps around frames
Use a level, call a professional if it’s severe
Monitor and assess if gaps widen
Improve drainage, consider waterproofing
If your home has two or more of these signs, it may be time to schedule a foundation inspection before issues worsen.
What Are the Causes of Foundation Cracks in Indiana?
Several environmental and structural factors contribute to foundation issues in Hamilton County, including:

1. Weather Extremes
Indiana’s frequent rain, snow, and freeze-thaw cycles cause soil to expand and contract, putting continuous stress on foundations.
2. Poor Drainage
If water pools around the foundation due to faulty drainage (gutters and downspouts), it can seep into cracks and erode the soil underneath, leading to foundation settling issues in older homes.
3. Aging Construction Materials
Homes built before the 90s often lack modern waterproofing and reinforcement techniques, making them more vulnerable to damage over time.
4. Expansive Soil
Many parts of Indiana have clay-heavy soil, which absorbs water and swells, then shrinks during dry spells—causing the foundation to shift and crack.
DIY Foundation Check: What Homeowners Can Look For
Before calling a professional, try these simple at-home tests:

Check for Exterior Cracks in Walls
- Walk around your home and look for visible cracks in the foundation.
- Small hairline cracks are normal, but widening cracks or stair-step patterns in brickwork may indicate structural problems.

Test Doors and Windows
- Open and close all doors and windows—are they sticking or misaligned?
- If multiple doors are suddenly hard to close, the foundation may be shifting.

Inspect Floors for Unevenness
- Walk across rooms and pay attention to dips or slopes in the floor.
- Place a marble on the floor—if it rolls in one direction on its own, your foundation may be settling unevenly.

Look for Water Issues in the Basement
- Check for dampness, water stains, or small puddles along basement walls.
- A musty smell can also indicate excess moisture coming through foundation cracks in walls.
When to Call a Professional for an Inspection
If your home is showing multiple signs of foundation distress, it’s time for an expert evaluation. Here’s why foundation repair in Hamilton County, IN, is important:
- Early detection can save thousands of dollars in repairs by addressing minor cracks before they turn into structural damage.
- A professional inspection can determine whether repairs or reinforcements are necessary.
- Most foundation repair specialists, including Indiana Foundation Service, offer free, no-obligation inspections.
Your Home Has Stood for Decades—Make Sure It Stays Strong

A lot of homes in Hamilton County are old, so foundation issues are becoming more common. Addressing concerns early can help avoid major repairs, protect your home’s value, and keep your foundation stable for years to come.
If you’re unsure about the condition of your home’s foundation, schedule a free expert evaluation with Indiana Foundation Service today. We’ve seen the good, the bad, and the ugly side of aging homes, but you can count on us for the right solution that lasts.
Signs of Foundation Problems FAQs
Yes, regions with clay-rich soil and those that experience significant seasonal moisture variations are more likely to have expansive soils. Clay is common throughout Indiana. Our team at Indiana Foundation Service is familiar with these issues and can provide a free inspection and targeted repair solutions.
Generally, thin, isolated hairline cracks are likely cosmetic, while larger cracks that run across the ceiling and down walls, cracks accompanied by sagging, or widespread cracking patterns may indicate structural concerns that require professional evaluation.
Drywall cracks can be present in both new and old homes if there are foundational issues. This is not just an issue affecting older homes, as all homes are vulnerable.
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