What Is Happening in the Naperville IL Housing Market Right Now?
The Naperville IL housing market is still moving at higher prices, but it is slower and better stocked than a year ago. In September 2026, the median detached home in Naperville sold for $682,500, up 5.8% from September 2025, while inventory rose 11.5% and average market time stretched from 31 to 41 days, according to the Midwest Real Estate Data Naperville Local Market Update. Buyers have more room to negotiate than they did in spring, and sellers who price to the data still sell.
By Kealan O’Neil, Designated Managing Broker, O’Neil Property Group. Updated October 29, 2026.
If you are trying to decide whether to buy or sell in Naperville this fall, the headline median only tells part of the story. What matters is how long homes sit, how close they sell to the original list price, what a mortgage costs this week, and which closing costs are specific to a Naperville address.
Below are the September 2026 numbers straight from the MLS that local brokers use, what they mean for each side of the deal, and the Naperville-specific costs and deadlines that catch people late in a transaction.
Naperville IL Housing Market Numbers for September 2026
These figures come from Midwest Real Estate Data (MRED), the multiple listing service that covers Naperville, in its Local Market Update with data current as of October 14, 2026. MRED notes that one month can look extreme because of small sample sizes, so the trailing 12-month figures are worth watching alongside the monthly ones.
Detached single-family homes
- Median sales price: $682,500 in September 2026, up 5.8% from $645,000 a year earlier. The trailing 12-month median was $715,000, up 2.3%.
- Closed sales: 116, up from 86 in September 2025.
- Under contract: 68, down from 93 a year earlier.
- Percent of original list price received: 98.5%, versus 98.7% a year earlier.
- Average market time: 41 days, up from 31.
- Inventory at month end: 213 homes, up 11.5% from 191.
Townhomes and condos (attached single-family)
- Median sales price: $392,000, up 20.4% from $325,500. The trailing 12-month median was $360,000, up 9.1%.
- Closed sales: 57, the same as a year earlier.
- Percent of original list price received: 97.6%.
- Average market time: 41 days, up from 39.
- Inventory at month end: 105, up 28% from 82.
How much supply is there?
Dividing September’s month-end inventory by the average monthly closings over the trailing 12 months gives roughly 2.0 months of supply for detached homes and about 2.1 months for attached homes. That is my own calculation from the MRED figures above, not a number MRED publishes.
Two months of supply is still tight, but the year-over-year rise in inventory and market time is a real change. The drop in homes under contract, from 93 to 68 for detached homes, is the signal to watch. It suggests October and November closings could come in lighter.
How Naperville compares to the wider area
Naperville sits in both DuPage and Will counties. MRED’s September 2026 reports put the DuPage County detached median at $500,000 and the Will County detached median at $407,000, so Naperville continues to run well above both county medians. Across the nine-county Chicago metro area, the Illinois REALTORS September 2026 Chicago Metro Area report shows a median of $385,000 for all properties, up 6.9%, with metro inventory down 8.4% from a year earlier. Naperville’s inventory is moving the other way, which is part of why buyers there have a bit more breathing room.
If you are weighing Naperville against a nearby city, our Aurora vs Naperville cost comparison walks through the taxes, utilities, and transfer stamps that differ between the two.
What the Naperville IL Housing Market Means If You Are Buying
The biggest shift for buyers is time. At 41 days of average market time, you are more likely to see a listing that has been up for a few weeks, and that is where negotiation happens.
Look at days on market before you write an offer
A home that has been active for 30 days or more, or has had a price change, usually has a seller who is more open to inspection repairs, a credit, or a closing date that works for you. A brand-new listing in a popular price range can still draw competition, so you need to know which one you are looking at before you decide how hard to push.
Keep in mind that MRED’s price figures do not account for seller concessions. A home that sold at 98.5% of list may also have included a closing credit, so the real net price can be lower than the headline suggests.
Run the payment at this week’s rate
Freddie Mac’s Primary Mortgage Market Survey put the 30-year fixed rate at 7.24% for the week of October 29, 2026, down from 7.32% the week before. A year earlier it was 6.17%.
Here is an example, not a quote. On a $682,500 home with 20% down, a $546,000 30-year loan at 7.24% works out to about $3,721 a month in principal and interest. At 6.17%, the same loan would be about $3,333. That is my calculation, and it leaves out taxes, insurance, and any HOA dues, which add a meaningful amount in Naperville.
Get a written pre-approval from a lender before you tour seriously, and ask the lender to run the payment with the actual tax bill of the home you like, not an estimate.
Know the Naperville costs that land on the buyer
Naperville is one of the cities where the buyer pays the city transfer stamp. The city’s real estate transfer tax page says buyers of property in incorporated Naperville must purchase the stamp, at $1.50 per $500 of purchase price, rounded up to the next $500. On a $682,500 purchase, that is $2,047.50.
That stamp applies only inside city limits. Some homes with a Naperville mailing address sit in unincorporated areas, so confirm the address with the city’s Your Place tool or your attorney before you budget.
For the full picture of what buyers pay at closing, see our guide to Illinois home buying costs.
What the Naperville IL Housing Market Means If You Are Selling
Prices are still up year over year, but the extra inventory means buyers are comparing more homes before they commit. Overpricing costs you time, and time is what turns into price reductions.
Price to the last 90 days, not last spring
Your comparable sales should be recent closings near you, adjusted for condition and size. With market time rising from 31 to 41 days, a home priced at last spring’s peak is likely to sit, and a stale listing invites lower offers.
A free comparative market analysis that uses actual MLS closings for your street and subdivision is the starting point. From there, condition, presentation, and launch timing decide how close to list price you land.
Plan for the seller-side paperwork early
Illinois charges a state transfer tax of 50 cents for each $500 of value under 35 ILCS 200/31-10, which works out to $682.50 on a $682,500 sale. Who pays it is set by your contract, so confirm it with your attorney.
Naperville also requires a Statement of Open Accounts before it issues the city stamp, and the city asks for that request at least seven business days before closing. If a final utility reading or an unpaid city balance turns up late, it can push your closing date. Our seller closing costs breakdown covers the rest of what comes out of your proceeds.
Know which tax bill your buyer will see
Naperville spans six townships across DuPage and Will counties, according to the City of Naperville. Your township assessor sets the assessment and your county treasurer collects the bill, so buyers on the DuPage side and the Will side may be looking at different calendars and rates. Have your current tax bill ready when you list, because a buyer’s lender will ask for it.
How to Choose a Real Estate Agent in Naperville, IL
When people search for the top real estate agents in Naperville, IL, what they usually want is someone who can explain numbers like the ones above for their specific street. Ask any agent you interview to show you recent MLS closings near the home, explain how market time has changed in that price range, and walk through the Naperville stamp and open-accounts timeline.
Look for someone who answers in specifics, tells you when a home is overpriced, and works with your attorney and lender rather than around them.
Naperville Housing Market Questions Buyers and Sellers Ask
What is the median home price in Naperville, IL?
Is Naperville a buyer’s market or a seller’s market?
Who pays the Naperville transfer tax?
Which county is Naperville in for property taxes?
How do I choose a real estate agent in Naperville, IL?
Get a Read on Your Naperville Home or Next Move
The Naperville IL housing market rewards people who move on current numbers, not last season’s headlines. If you are thinking about buying or selling in Naperville, I can pull the recent MLS closings for your street, show you what homes like yours are actually netting, and map out the costs and deadlines from contract to closing. If you are also comparing nearby towns, our Naperville area page is a good place to start, and, we can compare them side by side. Call or text Kealan at 630-425-8815.
About Kealan O’Neil
Kealan O’Neil is the Designated Managing Broker and founder of O’Neil Property Group, an independent real estate brokerage based in Yorkville, Illinois. He and his team help buyers and sellers in Yorkville, Oswego, Montgomery, and the surrounding Kendall and Kane County communities, and he owns and manages a local rental portfolio, so he approaches every decision as both a broker and an investor. Call or text Kealan at 630-425-8815.
This post is general information about real estate in the Fox Valley, not legal, tax, or financial advice. Real estate laws, tax rules, and municipal ordinances change, and how they apply depends on your specific situation. Talk with a licensed attorney, CPA, or lender before making decisions about a purchase, sale, or tax matter. O’Neil Property Group is a licensed Illinois real estate brokerage.