Kane County

Kane County sits at a gross rent-to-price ratio of 0.0678, which translates to a 4.41% cap rate on a median-priced asset at $373,804. That cap rate is marginal at best when measured against a 6.85% mortgage rate, and the numbers confirm it: a 20% down payment at that rate produces a monthly mortgage of $1,960, and after adding $739 in estimated operating expenses the position runs negative $587 per month. Cash-on-cash return comes in at -8.19% on a $74,761 equity deployment. This is not a cash-flow market at current financing costs. Where Kane shows genuine strength is on the appreciation side, scoring 83 out of 100, with home prices up 3.85% year-over-year on a median base approaching $374,000. The market sits firmly on the appreciation end of the spectrum, and an investor underwriting it as anything else is likely to be disappointed.

The profile here matches an appreciation-oriented buyer or a longer-horizon landlord who can absorb short-term negative carry in exchange for equity buildup in a county with a $96,400 median household income and an affordability index of 72. That income level supports $2,111 median rents without extraordinary tenant stress, which matters for collection stability even if it does not save the cash-flow math at today's rates. A value-add operator could tighten the loss with a below-market acquisition or a rent bump on a neglected asset, but the core economics do not flip to positive cash flow without meaningful discount to median pricing or a materially higher rent than the market median. The 68 overall score and 81st national percentile ranking (145th out of 1,000 counties) suggest a reasonably competitive market, not a hidden gem where deep discounts are easy to find.

The property tax picture is the single most important underwriting line item for Kane County investors and it deserves direct attention. Using the Illinois state-average effective rate of 2.27% (Tax Foundation 2024, with the honest caveat that actual county and township rates will vary), annual property tax on the median purchase runs $8,485 and annual insurance adds another $1,009. That puts combined monthly tax and insurance at $791, which is nearly as large as the mortgage principal and interest component and almost entirely responsible for why the position goes negative. At 2.27%, Illinois's rate is very high by national standards and it is not a rounding error on your underwrite; it is the dominant variable separating Kane from markets with otherwise similar gross yields. Any sensitivity analysis should run scenarios at actual assessed values and local millage rates before committing capital, because the difference between a county estimate and a township reality can be several hundred dollars per month.

On the risk side, the stability score of 50 is the one metric that should give a careful investor pause. It sits at the midpoint and does not signal a distressed market, but it does mean Kane lacks the insulation a more economically diverse or faster-growing county might provide. No economic anchor data was supplied, so it would be irresponsible to speculate on employer concentration or demand drivers beyond what the income and rent figures themselves imply.

Comparing Kane to its neighbors clarifies where it sits in the Chicago metro pecking order. Cook County offers the most interesting contrast: lower median prices at $314,516, nearly identical rents at $2,113, and a rent-to-price ratio of 0.0806 versus Kane's 0.0678. That 13-point basis-point advantage in gross yield is meaningful at these price levels and explains Cook's slightly higher overall score of 70. Will County is the closest peer on yield at 0.0705 with a median price of $361,064 and slightly higher rents of $2,121, also scoring 69. DuPage County is the weakest cash-flow proposition in the group at a 0.0588 ratio on a $416,478 median, and its 66 overall score reflects that. Lake County is nearly a mirror of Kane in price and rent but scores one point higher at 69.

Choose Kane over its neighbors when you are prioritizing appreciation trajectory and median income quality over near-term yield, particularly if you believe the 3.85% annual price growth rate continues in an above-average income suburban corridor. Choose Cook or Will County instead if yield improvement of even 100-200 basis points on gross rent matters to your underwrite, which at these price levels and tax burdens it almost certainly should.