The City of Ithaca is moving forward with plans to legalize accessory dwelling units (ADUs) in residential and mixed-use neighborhoods, aiming to ease the city’s housing crunch and promote sustainable growth.
A proposed amendment to Chapter 325 of the municipal zoning code would allow one attached or detached ADU per parcel in several zoning districts, including R-1, R-2, R-3, CR-1, CR-2, CR-3, B-1, and B-2. The legislation is expected to be considered by Common Council on May 7, following a public hearing set for April 9.
The legislation is designed to open new paths to creating small, secondary housing units—such as basement apartments, converted garages, or backyard cottages—without requiring special permits. City officials say the change will allow homeowners more flexibility and create housing that meets evolving family needs, rising living costs, and changing demographics.
Under the proposed law, ADUs may be rented but not sold or subdivided. No off-street parking will be required, and attached units may not exceed 40% of the main home’s floor area. New detached units would be capped at 800 square feet and 20 feet in height, with modest setback requirements.
Planning staff emphasized that the policy will help address housing affordability and access, while preserving neighborhood character. They cited goals such as reducing carbon footprints, creating accessible housing for seniors and people with disabilities, and increasing housing options for smaller households.
The proposal follows over a year of research, public outreach, and policy design. A draft ordinance and environmental assessment are now being circulated for public and agency review.
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