Cost of Waiting to Buy a Home in Belleville, O’Fallon, and Mascoutah, IL

What five years of hesitation has actually cost buyers in St. Clair County, Illinois.

For the last several years, I’ve had a version of the same conversation with buyers across St. Clair County. It goes something like this: “We’re thinking about waiting until rates come down.” Or: “We want to hold off until prices drop a little.” It’s a completely reasonable thing to think. Nobody wants to overpay. Nobody wants to lock in a high payment when they believe relief might be around the corner.

The problem is that waiting has not been free. It has not been neutral. For most people who made that choice in 2020, 2021, or 2022, waiting has cost them real money, real equity, and in many cases, real opportunity. Here’s how that math actually looks in this market.

Home Prices in Belleville, O’Fallon, and Mascoutah Have Not Come Down

Let’s start with the part that most people got wrong: the assumption that prices would eventually correct. Five years ago, a typical home in St. Clair County was selling in the low-to-mid $130,000 range. Today, that same home is pushing $210,000 or higher, depending on the community.

In O’Fallon, IL, values have climbed toward the $280,000 range. Mascoutah, which has grown steadily alongside Scott AFB, has moved from the low $150,000s to north of $230,000. Belleville, while still the most affordable of the three, has seen consistent appreciation that shows no sign of reversing.

That’s roughly $70,000 to $80,000 in additional purchase price a buyer in this market is now facing compared to someone who bought in 2020 or early 2021. The appreciation did not stop and wait for buyers to feel comfortable. It just kept going.

Then There Are the Rates

Here’s where it gets a little painful. In January 2021, the 30-year fixed mortgage rate hit an all-time record low of 2.65%. Buyers who locked in at those rates got a deal that, frankly, we will probably not see again in our lifetimes.

As of June 2026, the 30-year fixed sits at approximately 6.48%. That’s more than double. And while rates pulled back from the near-8% peak in October 2023, the return to sub-3% rates that many buyers have been waiting for has not materialized, and most economists do not expect it to.

What does that look like in real dollars? Take a $175,000 purchase with 10% down, a typical scenario in this market. At 2.65% in 2021, your monthly principal and interest was around $636. That same loan today at 6.48% runs approximately $993 per month. That’s $357 more every single month, or over $120,000 in additional interest over the life of the loan.

The Compounded Effect: Price Plus Rate

When you put both factors together, the picture gets sobering. Someone who bought a home in St. Clair County in 2021 for $140,000 at 3% is paying roughly $533 per month. That same buyer has also watched their home grow in value to around $210,000, meaning they’ve built close to $70,000 in equity.

A buyer purchasing that same property today for $210,000 at 6.48% is paying around $1,120 per month with 10% down. They are starting $70,000 behind on equity, paying nearly $600 more per month, and they still got the same house. That is what waiting has cost people in this market.

So Where Does That Leave Buyers Right Now?

Prices in Belleville, O’Fallon, and Mascoutah are still appreciating. Year-over-year gains in St. Clair County are running close to 10% as of early 2026. New construction in O’Fallon and Shiloh is adding supply, but not fast enough to flip this into a buyer’s market. With MidAmerica Airport continuing to grow and activity at Scott AFB remaining steady, the demand side of this market has real structural support.

If rates drop meaningfully, the buyers sitting on the sidelines right now are going to come back into the market fast. When that happens, competition increases and prices follow. The window of relative calm we’re in may not last.

The old advice still holds. The best time to buy was five years ago. The second best time is when you’re financially ready and a home works for your life. But if you’re delaying specifically because you’re betting on prices dropping or rates falling back to 3%, sit down with the actual numbers first.

Frequently Asked Questions: Home Buying in St. Clair County, IL

How much have home prices increased in St. Clair County, IL over the last 5 years?

Home prices in St. Clair County, Illinois have increased by approximately $70,000 to $80,000 over the last five years. The county median was around $130,000 in 2021 and reached approximately $210,000 by 2026, representing roughly 60% cumulative appreciation. Communities like O’Fallon and Mascoutah have seen even larger dollar gains.

Is it worth waiting for home prices to drop in Belleville or O’Fallon, IL?

Based on the last five years of data in St. Clair County, waiting has not been a winning strategy for most buyers. Prices have appreciated steadily and have not experienced a meaningful correction. Buyers who waited from 2021 to 2026 now face a purchase price that is $70,000 to $90,000 higher depending on the community, combined with mortgage rates that are more than double the 2021 lows.

Will mortgage rates come back down to 3% in Illinois?

Most economists and mortgage industry analysts do not expect 30-year fixed mortgage rates to return to the 2%-3% range seen in 2020 and 2021. Those rates were the result of emergency Federal Reserve policy during the COVID-19 pandemic and are widely considered a historical anomaly. As of June 2026, the 30-year fixed mortgage rate is approximately 6.48%, which is more in line with the long-run historical average.

What is the current median home price in O’Fallon, IL?

As of 2026, the median home value in O’Fallon, Illinois is approximately $280,000 to $285,000. O’Fallon is one of the higher-priced communities in St. Clair County, driven by strong school ratings, proximity to Scott AFB, and continued new construction activity.

What is the current median home price in Mascoutah, IL?

Mascoutah, Illinois home values are approximately $230,000 to $235,000 as of 2026. The Mascoutah market has been one of the stronger performers in St. Clair County over the past five years, driven in large part by its proximity to Scott AFB and demand from military families relocating to the area.

Let’s Look at Your Specific Situation

I’ve been working with buyers and sellers in Belleville, O’Fallon, Mascoutah, and the surrounding communities for over 13 years. Every situation is different. Some buyers genuinely should wait. Others are leaving real money on the table every month they don’t act.

If you want to run the actual numbers for your price range and figure out what waiting is costing you, reach out. No pressure, no obligation. Just an honest conversation about the market and what makes sense for where you are right now.

Craig Ziegel | Single Tree Team | eXp Realty  |  Serving St. Clair County and Monroe County, IL and the greater St. Louis metro

Real estate is a referral-based business, and the greatest compliment I can receive is a referral from someone who trusts me with the people they care about. If you know someone thinking about buying or selling in this area, I’d be grateful for the introduction.