ADU · Erie County

Can you build an ADU in Hamburg, NY?

Village of Hamburg has 8 districts. 5 districts prohibit ADUs, 3 require a special-use permit. Check your address to confirm the district that applies to your parcel:

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What the Hamburg code says

An accessory dwelling unit is allowed only in LCR, NCC and GC, and only with a special use permit. It is prohibited in SFR, TVR and VCC, and MU-R and MU-I allow neither a house nor such a unit.

Conditions the code attaches:

An owner must live in one of the two units at least six months a year and sign a notarised affidavit, which a new owner must renew on sale
One unit per house, attached or detached, with no more than two bedrooms
The unit can never be sold separately from the house
Any new outside entrance must be at the side or rear, and the design must match the house
A detached unit is held to the limits for accessory structures

What the Hamburg 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
SFR Single-Family Residential	0.17 ac	25 / 6 / 30 ft	35 ft	No
TVR Traditional Village Residential	0.14 ac	25 / 6 / 30 ft	35 ft	No
LCR Limited Commercial Residential	0.14 ac	15 / 6 / 30 ft	35 ft	Special permit
Village Center Commercial District	0.14 ac	0 / 0 / 20 ft	55 ft	No
Neighborhood Commercial Corridor District	0.14 ac	0 / 10 / 25 ft	35 ft	Special permit
Gateway Commercial District	0.23 ac	0 / 15 / 25 ft	35 ft	Special permit
Mixed Use Redevelopment District	0.46 ac	0 / 15 / 35 ft	40 ft	No
Mixed Use Industrial District	0.46 ac	0 / 15 / 35 ft	40 ft	No

Village Center Commercial District - There is a minimum building height here as well as a maximum: a multifamily or non-residential building must reach at least 30 ft and two storeys, and may then go to 40 ft and three storeys or 55 ft and four.

For a non-residential use the only area control is a 7,500 sq ft cap on the footprint of a primary structure
A zero side yard is not only allowed but encouraged where the principal building may abut its neighbour
The front yard for a non-residential use is a build-to band of 0 to 10 ft rather than a minimum
A structure originally built for residential purposes keeps the front yard and entrance of the original building whatever it is used for now
The side and rear yards shown are the smaller of a pair, and the larger applies to a non-residential use adjacent to a residential use or district

Neighborhood Commercial Corridor District - The lot minimum depends on the use: a non-residential use needs 9,000 sq ft on a 45 ft width where a house needs 6,000 sq ft on the same width.

The 50% cap is on gross impervious surface rather than building footprint
A primary non-residential structure is separately capped at 7,500 sq ft of footprint, and that cap, not the coverage percentage, is what limits a large-format building
The front yard for a non-residential use is a build-to band of 0 to 30 ft rather than a minimum
A structure originally built for residential purposes keeps the front yard and entrance of the original building whatever it is used for now
The side and rear yards shown are the smaller of a pair, and the larger applies to a non-residential use adjacent to a residential use or district

Gateway Commercial District - The lot minimum depends on the use: a non-residential use needs 15,000 sq ft where a house needs 10,000 sq ft.

The 50% cap is on gross impervious surface rather than building footprint
A primary non-residential structure is separately capped at 7,500 sq ft of footprint, and that cap, not the coverage percentage, is what limits a large-format building
The front yard for a non-residential use is a build-to band of 0 to 30 ft rather than a minimum
A structure originally built for residential purposes keeps the front yard and entrance of the original building whatever it is used for now
The side and rear yards shown are the smaller of a pair, and the larger applies to a non-residential use adjacent to a residential use or district

Mixed Use Redevelopment District - A primary non-residential structure is capped at 10,000 sq ft of footprint, on top of the 40% cap, which is on gross impervious surface rather than building footprint.

The front yard for a non-residential use is a build-to band of 0 to 30 ft rather than a minimum
A structure originally built for residential purposes keeps the front yard and entrance of the original building whatever it is used for now
The side and rear yards shown are the smaller of a pair, and the larger applies to a non-residential use adjacent to a residential use or district
Accessory structures take 5 ft, rising to 10 ft on the same test

Mixed Use Industrial District - The 40% cap shown is on gross impervious surface rather than building footprint, and the front yard for a non-residential use is a build-to band of 0 to 30 ft rather than a minimum.

The district sets no cap on the footprint of a primary non-residential structure
A structure originally built for residential purposes keeps the front yard and entrance of the original building whatever it is used for now
The side and rear yards shown are the smaller of a pair, and the larger applies to a non-residential use adjacent to a residential use or district
Accessory structures take 5 ft, rising to 10 ft on the same test

ADUs vs. short-term rentals in Hamburg

Short-term rentals allowed with local rules for Village of Hamburg. 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. Municipal source

Good to know

Residential lot minimum0.14–0.17 ac — an ADU still has to fit the district's lot and setback envelope.
UtilityNational Grid territory.
Zoning codeecode360.com/39715777
Building dept(716) 649-4501

ADU FAQ — Hamburg, NY

Are ADUs allowed in Hamburg, NY?

Village of Hamburg has 8 districts. 5 districts prohibit ADUs, 3 require a special-use permit. Check your address with the free ADU checker, or confirm with the building department at (716) 649-4501.

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

It depends on the district: 3 of 8 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 Hamburg?

Short-term rentals allowed with local rules for Village of Hamburg. 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 Hamburg

Permission is one question and budget is another. An 800 sq ft accessory unit here runs roughly $200k–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 Hamburg, priced by size.

How we know this

Sections analyzed: § 250-23.3 · § 250-20.4 (residential use table) · § 250-21.4 (commercial use table) · § 250-22.4 (mixed-use table)
Districts confirmed: 8 of 8 — every mapped district.
Last reviewed: 2026-09-10
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 Hamburg: Full zoning for new construction · ADU build cost · House build cost · ADU rules across Erie County · All Erie County towns

ADU information for Village of Hamburg is compiled from the municipal code (last reviewed 2026-09-10) 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 (716) 649-4501 before relying on any answer. Source: the Offsite / Aldo zoning dataset.