A long-running fight over whether Chicago should broadly legalize outlawed coach house “granny flats” and basement units is set to come to an end later this month, aldermen say.

Two aldermen with dueling ordinances that would chart sharply different futures for “additional dwelling units” said Monday that they will hold votes later this month.

A version sponsored by Ald. Bennett Lawson, backed by Mayor Brandon Johnson, would make the additional units legal throughout the entire city, with per-block limits in single-family residential areas. A competing plan from Ald. Marty Quinn would give aldermen the ability to effectively block the added units from such areas, but allow them elsewhere.

The political wrangling over the issue has stretched over a year, a headache for Johnson that out

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