Investing in Round Lake Beach, IL — Market Analysis
Round Lake Beach is one of the lower-basis entry points in Illinois, with a median home price around $235,000. Round Lake Beach is a suburban growth market, which typically means single-family stock, longer average tenancies, school-district-driven demand, and lower turnover cost than urban infill. Suburban DSCR deals tend to underwrite cleanly because the rent comps are homogeneous.
Buying a rental property in Round Lake Beach on a DSCR loan means putting a minimum of $47,000 down (20% of purchase price), leaving a loan amount of $188,000 at 80% LTV. At current DSCR investor pricing near 7.50%, principal and interest on that loan runs about $1,315 per month. Add Lake County property taxes of roughly $407/month and landlord insurance of about $94/month, and your all-in PITIA lands near $1,816/month. That PITIA figure — not the P&I — is what the lender divides your rent into.
A long-term lease in Round Lake Beach should generate roughly $1,375/month in gross rent. Against a PITIA of $1,816, that produces an estimated DSCR ratio of 0.76x. That is well below the 1.0 threshold on a long-term lease, which is typical for a market at this price point. Financing here generally works one of three ways — a larger down payment, a no-ratio DSCR product, or qualifying on short-term rental revenue instead of long-term rent.
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 Round Lake Beach specifically, effective property tax on investment property runs around 2.08% of value annually — about $4,888 a year at the median price — and landlord insurance near $1,128 a year.
On return metrics, Round Lake Beach pencils to an estimated cap rate of 4.35% using a 62% NOI margin, and a gross rent multiplier of 14.2. Monthly cash flow on a long-term lease at 20% down is estimated at $441 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.

