Frequently Asked Questions
Find answers to common questions about ADUs in Ithaca.
The ADU ordinance was passed to increase housing options in Ithaca, address housing affordability challenges, and allow homeowners to make better use of their properties. ADUs provide flexible housing for family members, generate rental income, and contribute to sustainable urban development.
New York State has enacted legislation supporting ADU development in certain areas. The City of Ithaca's ordinance aligns with state goals to increase housing supply while establishing local requirements appropriate for our community.
ADUs are permitted in several residential zones throughout Ithaca, including R-1, R-2, and R-3 zones. Specific location requirements depend on lot size, setbacks, and other zoning factors. Contact the Planning Department or our team for a site-specific assessment.
ADUs are limited to an 800 square foot footprint, with a maximum of 2 stories and a height not to exceed 20 feet.
ADUs can be attached to the primary structure (basement, attic, addition, garage conversion) or detached as a separate structure. Detached ADUs must meet setback requirements from property lines and the primary dwelling.
The City's ordinance may include owner occupancy requirements for properties with ADUs. Contact the Planning Department for current regulations, as requirements can vary and may be updated.
Timeline varies based on project scope, but typically expect 2-4 months for design and permitting, plus 4-8 months for construction. Total timeline is usually 6-12 months from start to completion.
Costs vary significantly based on size, type, finishes, and site conditions. Expect $150,000-$350,000 for a typical detached ADU. Attached conversions may cost less. We provide detailed estimates during consultation.