Croton on Hudson ADU Zoning Guide

Last reviewed 2026-04-27

Max size800 sq ft
Owner occupancyRequired

Croton-on-Hudson permits accessory apartments and detached accessory cottages on single-family lots under Chapter 230 of the Village Zoning Code (most recently amended by Local Law No. 14 of 2022). Approval is by the Planning Board, with a 50-permit village-wide cap on the combined number of active accessory apartments and accessory cottages.

Status

Adoption status: Active — Croton-on-Hudson Village adopted an accessory apartment ordinance in 2015 and updated it in 2022
Governing ordinance: Village of Croton-on-Hudson Zoning Code, Chapter 230 (Supplementary Regulations) — accessory apartment / accessory cottage provisions, amended by Local Law No. 14 of 2022

Eligibility

Where ADUs are allowed

Zoning districts permitted: All districts permitting single-family residences
Lot type / use restrictions: Single-family lots containing no more than one dwelling unit; no accessory apartment permitted on properties with a professional office unit
Limit per property: One ADU per lot

Types allowed

Attached ADU (interior conversion): Yes — within a single-family detached dwelling
Detached ADU (new accessory structure): Yes — in a new accessory structure which must comply with all applicable regulations
Detached ADU (existing structure conversion): Yes
Attached ADU (addition): Yes

Size and placement

Size limits

Minimum sq ft: 300 sq ft
Maximum sq ft: The lesser of 800 sq ft or 40% of the habitable floor area of the principal building (Planning Board may approve a greater or lesser amount in specific circumstances)

Setbacks

General rule: New accessory structures must comply with all applicable dimensional regulations (setback requirements of the zoning district)
Specific numeric setbacks by zone: Not reproduced in retrieved code amendments; consult Village Building Inspector for zone-specific numbers

Rules for use

Parking

Requirement: No additional parking is mandatory for accessory apartments or cottages; the Planning Board may make case-by-case assessment during application review

Owner occupancy

Required: Yes — owner occupancy is required; the owner of the property must occupy one of the units

Rental use

Short-term rental: Possibly permitted — secondary source indicates STR is allowed, but most Westchester municipalities restrict STRs in ADUs. Confirm with the Village before relying on this.
Long-term rental: Permitted

How to apply in Croton on Hudson

Planning Board approval required: ADU requires Planning Board approval in districts permitting single-family residences
Building permit: Required from Village Building/Zoning Department
Contact: Village of Croton-on-Hudson Building/Zoning Department

Recent and pending changes

2022 ADU ordinance update
The local law was updated in 2022 (local law text confirmed from CHAMP document retrieval); prior ordinance adopted approximately 2015 per Tarrytown FAQ historical data

Important details

50-permit village-wide cap on combined accessory apartments and accessory cottages.
Accessory cottages must be set back at least 10 ft from all property lines and may not exceed 15 ft in height (measured the same as a single-family dwelling).
Existing-structure exception: a conforming accessory structure existing as of the effective date with a setback under 10 ft may still be used as an accessory cottage.
Public notice is required to property owners within 100 feet of the lot (per minor site plan procedure).

Frequently asked questions

Can I build a detached ADU cottage in Croton on Hudson?

Yes, Croton on Hudson allows both accessory apartments (within existing buildings) and detached accessory cottages in residential districts. This is one of the village's recent policy updates.

What is the maximum size for an ADU in Croton on Hudson?

ADUs must be a minimum of 300 square feet and no greater than the lesser of 800 square feet or 40 percent of the habitable floor area of the principal building. The Planning Board has flexibility to adjust requirements on a case-by-case basis.

Do I need extra parking if I build an ADU in Croton on Hudson?

No additional parking is mandatory for accessory apartments or cottages, though the Planning Board may assess parking needs on a case-by-case basis during application review.

Sources (3)

Last reviewed 2026-04-27. Local rules can change — verify the latest details with the Croton on Hudson planning department, or book a free consultation with our team before starting your project. This page is informational and is not legal advice.