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Shelter Island board to hear plan to shield ADU value increases from assessments for up to five years
Summary
Resolution 2026-94 directs a Feb. 23 public hearing on a proposed local law that would exempt the assessed-value increase from qualifying accessory dwelling units (ADUs) up to $200,000 for five years with a staged phase-out over five additional years.
The Shelter Island Town Board on Feb. 10 directed a public hearing for Feb. 23, 2026 at 6:00 p.m. to consider a local law creating an exemption for qualifying accessory dwelling units (ADUs). The proposed Article VIII uses Real Property Tax Law § 421-p authority and would exempt from assessment the increase in assessed value attributable to a qualifying ADU up to $200,000 in the initial year for a period of five years, with a staged reduction over the following five years (100% years 1–5; 75% year 6; 50% year 7; 25% year 8; 15% year 9; 5% year 10).
The minutes state the exemption applies to qualifying ADUs constructed, reconstructed, altered, or improved after the effective date of the local law, requires a reconstruction/alteration/new-construction cost minimum of $3,000 (exclusive of ordinary maintenance and repairs), and limits the exemption to ADUs located on the same parcel as a single-family residence. The resolution schedules public comment and next steps at the Feb. 23 hearing.
