Investing in Blue Island, IL — Market Analysis
Blue Island is one of the lower-basis entry points in Illinois, with a median home price around $175,000. Blue Island is an urban infill market where small multifamily and converted stock dominate. Per-door rents run higher than the metro average, but so do turnover, maintenance reserves, and the spread between gross and effective rent.
Buying a rental property in Blue Island on a DSCR loan means putting a minimum of $35,000 down (20% of purchase price), leaving a loan amount of $140,000 at 80% LTV. At current DSCR investor pricing near 7.50%, principal and interest on that loan runs about $979 per month. Add Cook County property taxes of roughly $303/month and landlord insurance of about $70/month, and your all-in PITIA lands near $1,352/month. That PITIA figure — not the P&I — is what the lender divides your rent into.
A long-term lease in Blue Island should generate roughly $1,300/month in gross rent. Against a PITIA of $1,352, that produces an estimated DSCR ratio of 0.96x. That falls just short of the 1.0 minimum. This is a very common outcome in Blue Island and it does not kill the deal: moving to 25% down ($43,750) cuts the payment enough to close most of the gap, and several shelves will fund down to 0.75 with a rate add-on.
Two Illinois-specific items to build into your model: Illinois carries among the highest effective property tax rates in the nation and Cook County reassesses on a triennial township cycle; investor-owned property also loses the owner-occupied homestead exemption, which can raise the bill materially the year after closing. In Blue Island specifically, effective property tax on investment property runs around 2.08% of value annually — about $3,640 a year at the median price — and landlord insurance near $840 a year.
On return metrics, Blue Island pencils to an estimated cap rate of 5.53% using a 62% NOI margin, and a gross rent multiplier of 11.2. Monthly cash flow on a long-term lease at 20% down is estimated at $52 negative. Negative cash flow at 20% down is common in appreciation-led markets; investors here typically increase the down payment, buy below median, add a unit, or run the property short-term to close the gap.

