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Ithaca Common Council adopts ADU ordinance removing owner-occupancy requirement
Summary
After months of debate, the Ithaca Common Council voted to adopt an amendment to city zoning to allow accessory dwelling units (ADUs) by right in most residential zones and to remove an owner-occupancy requirement. The measure drew extended public comment and several floor amendments before final passage.
Ithaca Common Council on May 7 adopted an amendment to the city code to allow accessory dwelling units, or ADUs, by right in qualifying residential zones and to remove the owner-occupancy requirement in most areas of the city.
The change, approved after extensive public comment and council debate, legalizes construction of detached or attached ADUs that meet prescribed standards (size limits, setbacks and other code requirements) without a special permit in most single-family and low-density residential zones. Provisions already in the zoning code that govern lot coverage, setbacks and stormwater remain in force.
The council debated the measure for more than one hour. Supporters said the ordinance is a modest, permissive step to add small-scale housing options; opponents — particularly residents of South Hill and portions of the Third Ward — argued owner-occupancy requirements protect long-term residents and neighborhood character. Several council members proposed, and the council considered, amendments to require reevaluation of the ordinance after a period and to create special rules for specific neighborhoods; those amendments failed on the floor.
Council members who supported the ordinance said ADUs are a low-impact tool to add housing supply and can provide options for aging homeowners, renters who want to live in a single-family neighborhood, and modest rental units that can help local residents with rising housing costs. Opponents contended that the city should first put in place stronger supports to ensure long-term residents and small local owners can take advantage of ADUs rather than outside investors.
The new ordinance directs planning staff to implement the by-right ADU regulations and to continue work on complementary measures staff and council discussed earlier, including template designs to speed permitting, partnerships with lenders to support financing for homeowners, and an opt‑in property-tax abatement program for qualifying ADU projects. Several of those supporting measures were already underway before this vote.
The measure was the result of months of public hearings, committee meetings and written input from neighbors, the planning department and housing advocates. The council adopted the ordinance at the May 7 meeting and directed staff to return to council with implementation details and possible incentive programs discussed during the debate.
Looking ahead, council members said they will continue to track ADU applications and may revisit related incentives, permitting streamlining and design guidance in committee to ensure the program benefits local residents and addresses unintended impacts.
