ADU · Columbia County

Can you build an ADU in Copake, NY?

Town of Copake has 8 districts. All districts allow ADUs. Check your address to confirm the district that applies to your parcel:

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What the Copake code says

An ADU is allowed in any district on the Building Inspector's approval alone, with no site plan review or special use permit, if the applicant certifies it will be used only for nontransient occupancy for five years after its certificate of occupancy.

Conditions the code attaches:

A certified ADU may not be used for transient or short-term rentals, and cannot get a short-term rental permit, during those five years.
Without the certification, an ADU needs site plan approval from the Planning Board, and in MU a special use permit from the ZBA as well.
It must be inside a one-family dwelling or its accessory building, at least 500 sq ft and no larger than two-thirds of the principal dwelling's total square footage.
It may have no more than two bedrooms, needs separate access, and must have bathroom facilities equal to one full bath.
An ADU in an accessory structure, or one that expands or alters the exterior of an existing building, must meet the district's dimensional requirements.
There is no owner-occupancy or kinship rule; the five-year certification limits only transient and short-term rentals.

What the Copake code indicates by district

The table below shows how each district treats ADUs, alongside the lot and setback standards that govern a second unit. District boundaries and conditions vary, so treat this as a starting point and confirm the district that applies to your parcel.

District	Min lot	Setbacks F / S / R	Max height	ADU
Rural Residential	3 ac	50 / 35 / 75 ft	35 ft	As of right
Hamlet	0.69 ac	20 / 30 / 75 ft	35 ft	As of right
Hamlet Business	1 ac	20 / 30 / 60 ft	35 ft	As of right
Highway Business	2 ac	50 / 30 / 70 ft	40 ft	As of right
Copake Lake	3 ac	50 / 35 / 75 ft	35 ft	As of right
Chrysler-Rhoda-Snyder Ponds	3 ac	50 / 35 / 75 ft	35 ft	As of right
Mixed Use	2 ac	50 / 20 / 60 ft	40 ft	As of right
Taconic Shores	—	50 / 35 / 75 ft	35 ft	As of right

Rural Residential - The three acre lot size is an average, not a floor: lot sizes may be averaged across a subdivision so individual lots vary, provided the average in RU is three acres and Department of Health standards for conventional septic systems and private wells are met.

A major subdivision must also meet the flexible lot subdivision requirements of § 232-17.
Lot shape is capped as well: the ratio of lot width to lot depth may be no more than 1:3.
The coverage cap counts impervious surfaces, not just buildings, so driveways and paving eat into it.

Hamlet - With public or community sewer available, the lot minimum drops to 0.5 acre, with 50 ft of width, a 15 ft side yard, a 40 ft rear yard and 50% coverage. The figures shown are for a lot without sewer, where the minimum is 30,000 sq ft.

The front yard is at least 20 ft and at most 50 ft.
Coverage includes impervious surfaces, not just buildings.
The maximum ratio of lot width to lot depth is 1:3.

Hamlet Business - The lot minimum can drop to 0.5 acre as a density bonus (§ 232-18) where the applicant provides alternative septic systems and best site design practices under § 232-8B.

The front yard is at least 20 ft and at most 50 ft.
Coverage includes impervious surfaces, not just buildings.
The maximum ratio of lot width to lot depth is 1:3.

Highway Business, Mixed Use - Coverage includes impervious surfaces, not just buildings.

The maximum ratio of lot width to lot depth is 1:3.

Copake Lake - The lot minimum can drop to 2 acres as a density bonus (§ 232-18) that requires best site design standards but not an alternative septic system.

Coverage includes impervious surfaces, not just buildings.
The maximum ratio of lot width to lot depth is 1:3.

Chrysler-Rhoda-Snyder Ponds - In a minor subdivision the lot minimum can drop to 2 acres as a density bonus (§ 232-18) where the applicant provides alternative septic systems and best site design practices under § 232-8B.

A major subdivision must meet the flexible lot subdivision requirements of § 232-17.
Coverage includes impervious surfaces, not just buildings.
The maximum ratio of lot width to lot depth is 1:3.

Taconic Shores - No further subdivision of lots is allowed in TS.

Coverage includes impervious surfaces, not just buildings.
The maximum ratio of lot width to lot depth is 1:3.

ADUs vs. short-term rentals in Copake

Short-term rentals allowed with local rules for Town of Copake. Short-term renting is regulated here. An operating permit is required for every short-term rental, and renting out more than 120 days in a year calls for an enhanced permit. These are separate questions from whether you can build an ADU — a unit you're allowed to add isn't automatically one you're allowed to rent nightly, so check both.

Good to know

Residential lot minimum0.69–3 ac — an ADU still has to fit the district's lot and setback envelope.
UtilityNYSEG territory.
Zoning codeecode360.com/10553589
Building dept(518) 329-1234

ADU FAQ — Copake, NY

Are ADUs allowed in Copake, NY?

Town of Copake has 8 districts. All districts allow ADUs. Check your address with the free ADU checker, or confirm with the building department at (518) 329-1234.

Do I need a special permit for an ADU in Copake?

No district in Town of Copake requires a special-use permit for an ADU - 8 districts allow ADUs. Site-plan review or a building permit may still apply.

Can I use an ADU as a short-term rental in Copake?

Short-term rentals allowed with local rules for Town of Copake. ADU occupancy and short-term-rental rules are separate: an ADU you can build isn't automatically one you can rent nightly. Confirm both before you count on STR income.

Run the free ADU check for your parcel →

What an ADU costs to build in Copake

Permission is one question and budget is another. An 800 sq ft accessory unit here runs roughly $195k–260k at a standard finish, and the per-square-foot rate comes in above a full house because the kitchen, bath, panel and heating plant cost the same either way. See the full cost to build an ADU in Copake, priced by size.

How we know this

Sections analyzed: Ch. 232 Zoning: Art II § 232-3 Terminology (accessory dwelling unit); Art III Establishment of Districts; Art IV District Regulations; Art V § 232-8; Art VI § 232-16.1 Accessory dwelling unit (am. 9-5-2023 by L.L. No. 10-2023) A-C, § 232-16.8 Short-term rentals; 232 Attachment 1 Table 1 Density Control Schedule; 232 Attachment 2 Table 2 Table of Use Regulations (am. through L.L. No. 11-2023) and key
Districts confirmed: 8 of 8 — every mapped district.
Last reviewed: 2026-06-02
Not covered here: Overlay districts, the zoning map, and any conditions attached to an individual parcel. Size limits and owner-occupancy terms sit in the code section above, not in this summary.

More on Copake: Full zoning for new construction · ADU build cost · House build cost · ADU rules across Columbia County · All Columbia County towns

ADU information for Town of Copake is compiled from the municipal code (last reviewed 2026-06-02) and provided for decision-support only — not legal or architectural advice. ADU eligibility, size, owner-occupancy and permit conditions vary by district and often carry exceptions; verify with the building department at (518) 329-1234 before relying on any answer. Source: the Offsite / Aldo zoning dataset.