ADU · Dutchess County

Can you build an ADU in Milan, NY?

Town of Milan has 6 districts. 5 districts allow ADUs with a special-use permit, 1 does not. Check your address to confirm the district that applies to your parcel:

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What the Milan code says

An accessory apartment needs a special use permit in A5A, A3A, R2A, HA and HB, and is not permitted in LC. It may be in or added to an existing one- or two-family dwelling, or in a separate accessory structure on the same lot.

Conditions the code attaches:

No special use permit is granted where the Dutchess County Health Department finds the shared water or sewage system cannot handle the added demand.
Where the unit has its own separate water and sewer facilities, Board of Health approval is required for them.
It must be a complete, independent unit with cooking, eating, sanitation and sleeping facilities, secondary and subordinate to the primary dwelling in size and appearance.
It may also go in an appropriate commercial structure in a district that allows such structures as permitted principal uses.
Building Department: (845) 758-5765.

What the Milan 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
Very-Low-Density Agricultural	5 ac	85 / - / 50 ft	35 ft	Special permit
Agricultural	3 ac	85 / - / 35 ft	35 ft	Special permit
Low-Density Residential	2 ac	75 / 10 / 25 ft	35 ft	Special permit
Hamlet	1 ac	20 / 0 / 25 ft	35 ft	Special permit
Highway Business	1 ac	80 / 20 / 50 ft	35 ft	Special permit
Land Conservation	1 ac	80 / - / 50 ft	—	No

Very-Low-Density Agricultural, Agricultural - Roofs must have a pitch of at least 7 in 12. The side yard figure is the total across both side yards, not the requirement on each.

Front yards are measured from the front lot line, or from the boundary of the road where the premises description extends into the road.

Low-Density Residential - The figures shown are for dwellings; a non-dwelling use takes a 100 ft front yard, 60 ft of combined side yard and a 50 ft rear yard. Roofs must have a pitch of at least 7 in 12.

The narrower side yard may not be less than 1/3 of the combined total.
On a through lot the front yard requirement applies on both streets.
Front yards are measured from the front lot line, or from the boundary of the road where the premises description extends into the road.

Hamlet - One side yard may be zero provided the two together come to 20 ft. Roofs must have a pitch of at least 7 in 12.

Front yards are measured from the front lot line, or from the boundary of the road where the premises description extends into the road.

Highway Business - A group of establishments needs 5 acres and 400 ft of width rather than the single-lot figures. For a commercial use, coverage excludes impervious surfaces for pedestrian access, vehicle access, parking and loading, so the 10% cap bites only on buildings.

A corner lot needs 240 ft of width instead of 200 ft, measured at the front building line.
The narrower side yard may not be less than 1/3 of the combined total.
No parking space may come within 20 ft of any property line.
Nothing may encroach into the front yard except a fence or wall no more than 6 ft high or a sign no larger than 20 sq ft.
Light industrial uses, meaning laboratory, research and non-nuisance manufacturing, take their bulk requirements from § 200-32 instead.
Roofs must have a pitch of at least 7 in 12.

Land Conservation - No automobile parking area may encroach into the front, side or rear yards. The side yard figure is the total across both side yards, not the requirement on each.

Roofs must have a pitch of at least 7 in 12.
Front yards are measured from the front lot line, or from the boundary of the road where the premises description extends into the road.

ADUs vs. short-term rentals in Milan

Short-term rentals allowed with local rules for Town of Milan. Short-term rentals in the Town of Milan are regulated by local law. Confirm the current requirements with Milan Town Hall before counting on rental income. 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 minimum1–5 ac — an ADU still has to fit the district's lot and setback envelope.
UtilityCentral Hudson territory.
Zoning codeecode360.com/6516421
Building dept(845) 758-5765

ADU FAQ — Milan, NY

Are ADUs allowed in Milan, NY?

Town of Milan has 6 districts. 5 districts allow ADUs with a special-use permit, 1 does not. Check your address with the free ADU checker, or confirm with the building department at (845) 758-5765.

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

It depends on the district: 5 of 6 require a special-use permit, the rest do not. Check the district that applies to your parcel before you design.

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

Short-term rentals allowed with local rules for Town of Milan. 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 Milan

Permission is one question and budget is another. An 800 sq ft accessory unit here runs roughly $210k–275k 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 Milan, priced by size.

How we know this

Sections analyzed: Ch. 200 Art. V Supplementary Regulations (accessory apartments); Art. VIII Special Use Permits; Table A Schedule of Use Regulations (200 Attachment 1)
Districts confirmed: 6 of 6 — every mapped district.
Last reviewed: 2026-08-16
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 Milan: Full zoning for new construction · ADU build cost · House build cost · ADU rules across Dutchess County · All Dutchess County towns

ADU information for Town of Milan is compiled from the municipal code (last reviewed 2026-08-16) 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 (845) 758-5765 before relying on any answer. Source: the Offsite / Aldo zoning dataset.