Duplexes in Illinois | Reonomy

Duplexes in Illinois

Unlock property data on all 15,839 duplexes in Illinois. Search across 100 counties to find the Illinois property records you need, and get in touch with Duplex owners in any market. Discover off-market properties likely to sell, refinance, or renovate, or find recent buyers and sellers.

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Popular searches around Illinois

Reonomy attracts a large community of Illinois commercial real estate professionals, including brokers, investors, roofers, contractors, appraisers, insurance providers, and more—many of which specialize in duplexes.

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Illinois duplex sold prices and values

Values and sold prices (last 24 months) United States Illinois
Average price/sqft $1,929 $1,814
Average sold price $418,681 $230,865
Median sold price $181,477 $109,906
Number of sales 123,587 1,068
Number of sales over $250k 48,360 130
Number of sales over $1m 8,001 31
Number of sales over $10m 360 --
Average total tax amount $4,137 $3,331
Average assessed value $185,854 $36,496
Average market value $301,667 $108,084

Illinois duplex property averages

Property averages United States Illinois
Average lot size 37,183 sf 11,125 sf
Median lot size 6,055 sf 7,414 sf
Average building area 140 sf 97 sf
Median building area 69 sf 59 sf
Median year built -- 1970
Average number of units 2 2
Median number of units -- 2

Illinois duplex total supply

Supply United States Illinois
Number of parcels 2,010,206 15,860
Aggregate lot acerage 117,420,112 3,553
Aggregate building area 151,462,078 sf 842,983 sf
Aggregate units -- 28,702

Illinois duplex industrial mortgages

Debt United States Illinois
Number of mortgages -- 52,431
Average value of mortgages -- $176,649

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