Naperville is a mid-range market in the Midwest with a smaller market with 150,000 residents. At a 4.40% estimated cap rate, this is a moderate market where rents of $2,130/mo lag behind home prices. With a median home price of $340,000 and population is roughly stable, Naperville offers opportunities for investors who source deals carefully.
Market data powered by Zillow Home Value Index (ZHVI) and Zillow Observed Rent Index (ZORI) · Updated Feb 2026
Naperville's 0.6% rent-to-price ratio is well below the 1% rule. At median prices of $340,000, the $2,130/mo rent produces only $1,247/mo in NOI. Investors here need to target below-median properties or pursue value-add strategies to make the numbers work.
At current rates, a 20% down conventional loan ($68K at 7%) would result in approximately $-562/mo cash flow — negative at median prices. Larger down payments, seller financing, or buying 15–25% below median are strategies to turn the numbers positive.
Property taxes consume 27% of gross rent here — one of the highest ratios in our dataset. This significantly compresses margins and makes Naperville a market where tax-conscious underwriting is essential. Every deal should be stress-tested with potential assessment increases.
All figures below are computed from Naperville's real market medians. Use them as a baseline; override with property-specific numbers in the calculators.
At 2% effective rate on the $340,000 median price, the annual tax bill is $6,800 — that's very high (top 15% of US markets) (+89% vs the national average of ~1.06%). Verify the actual assessed value before purchase; sale-triggered reassessments can push the bill higher than the seller's current statement.
If Naperville continues appreciating at 2.5%/yr while rents grow at a conservative 3%/yr, cap rate holds roughly steady as price growth outpaces rent. Year-by-year projection at the median:
| Year | Est. Price | Est. Rent/Mo | Cap Rate |
|---|---|---|---|
| Today | $340K | $2,130 | 4.4% |
| Year 1 | $349K | $2,194 | 4.4% |
| Year 2 | $357K | $2,260 | 4.4% |
| Year 3 | $366K | $2,328 | 4.5% |
| Year 4 | $375K | $2,397 | 4.5% |
| Year 5 | $385K | $2,469 | 4.5% |
Same median-priced Naperville property — different capital structures. All-cash maximizes cap rate. Leverage trades cash flow for higher cash-on-cash return when the spread between cap rate and borrowing cost is positive.
| Scenario | Cash Invested | Monthly Cash Flow | Annual CF | Cash-on-Cash |
|---|---|---|---|---|
| All cash | $340K | $1,247 | $14,966 | 4.4% |
| 20% down conventional @ 7% | $78K | $-562 | $-6,739 | -8.6% |
| 25% down DSCR @ 8.5% | $99K | $-714 | $-8,565 | -8.7% |
Properties don't always trade at the median. Lower-priced units typically offer higher cap rates but harder operations; higher-priced properties tend to compress cap rates while attracting better tenants. All-cash assumptions below:
| Tier | Price | Rent/Mo | NOI/Yr | Cap Rate | Monthly CF |
|---|---|---|---|---|---|
| Below median (~75% price) | $255K | $1,811 | $11,222 | 4.4% | $935 |
| At median | $340K | $2,130 | $12,237 | 3.6% | $1,020 |
| Above median (~125% price) | $425K | $2,450 | $13,261 | 3.1% | $1,105 |
Cap rate is just one piece. Real estate returns come from four sources: cash flow, appreciation, principal paydown, and tax benefits. Assuming 20% down conventional financing at 7% and a 5-year hold at Naperville's historical appreciation rate of 2.5%:
On a $68K down payment, that's a 46.2% total ROI over 5 years (not annualized). Tax benefits from depreciation are additional and depend on your personal tax bracket.
Automated checks against the underlying data — surface only the risks that actually apply to Naperville, not generic boilerplate:
Pre-filled with Naperville medians. Adjust to match a specific property.
Factor in financing to see your actual return on invested capital in Naperville.
Naperville, IL has a population of 150,000 and has been growing at 0.5% annually — roughly in line with national trends, meaning demand is stable but not exceptional. The median home price of $340,000 paired with median rents of $2,130/mo produces an estimated cap rate of 4.40%.
Property taxes at 2% are notably high and represent a significant drag on cash flow — model this expense carefully, as it can make or break a deal. The vacancy rate of 4.2% is impressively low, indicating tight rental supply and strong tenant demand — favorable for landlords.
At a price-to-income ratio of 2.9x, homes cost about 2.9 times the local median income of $118,000. This relatively affordable ratio suggests a deep pool of renters who find buying out of reach, supporting rental demand. Home values have appreciated at roughly 2.5% annually. Steady appreciation means total returns will be primarily cash flow-driven — the more sustainable model for long-term wealth building.
Bottom line: Naperville presents moderate opportunities. Cap rates near 4.40% mean deals need careful sourcing — look for value-add rehabs or emerging neighborhoods where rents are climbing.