Buffalo Setbacks & Height Limits — Green Code N-Zones

Fact-checked against Buffalo's current Green Code / Unified Development Ordinance on September 21, 2026.

Buffalo's Green Code is form-based. The development envelope is determined by both:

1. the Neighborhood Zone (N-zone); and
2. the building type selected or existing on the parcel.

The previous page incorrectly treated N-zones as if each zone itself carried one universal setback and height table. It also treated the numeric suffix in N-4-30 / N-4-50 as if it directly meant a 30-ft / 50-ft building-height cap. That is not how the current building-type standards work.

Detached House Example

Section 3.2.6 governs the Detached House building type. For the zones where that building type is allowed, current standards include:

This makes the old “N-4-30 = 30 ft / N-4-50 = 50 ft” description clearly incorrect for a detached house.

Attached House Has a Different Envelope

Section 3.2.2 gives the Attached House its own standards.

For example:

• front yard: within ±5 ft of the established front-yard line;
• interior side yard: 0 ft for the attached condition;
• rear yard: 15% of lot depth in N-2E/N-2R and 20% in N-3E/N-3R;
• height: 3 stories / 40 ft in N-2E, N-2R, N-3E, and N-3R.

Other building types — including carriage house, stacked units, shopfront house, commercial block, and civic building — have different tables again.

Zone + Building Type, Not Zone Alone

The Green Code's zone descriptions explicitly direct development to the building-type standards in Section 3.2.

A zoning lookup therefore needs two steps:

1. identify the N-zone;
2. identify which building type applies or is proposed.

Only then should setbacks, lot coverage, lot size, and height be read from the corresponding building-type table.

Established Front-Yard Line

For common residential building types, the front yard is often tied to an established front-yard line, not a generic “block average” with one citywide numerical minimum.

That is how the Green Code preserves the existing street pattern while allowing different building forms.

Historic and Special Conditions

Historic districts, preservation review, special corridors, waterfront rules, and project-specific approvals can add requirements.

The Green Code also contains specific height exceptions along named corridors; these should be checked where relevant rather than generalized across an N-zone.

ADUs / Ancillary Buildings

Carriage houses and other ancillary residential forms have their own building-type and accessory-use standards.

Do not infer an accessory-building envelope from the Detached House table.

See the Buffalo ADU rules page for current local ADU guidance.

How to Check a Property

1. Confirm the N-zone on Buffalo's official zoning map.
2. Determine the existing or proposed building type.
3. Use the matching Section 3.2 building-type table.
4. Check established-front-yard requirements and lot dimensions.
5. Check historic, waterfront, corridor, and other special standards.
6. Confirm parcel-specific questions with Buffalo Planning before relying on a design dimension.

Official Sources

• City of Buffalo — Green Code / Unified Development Ordinance
• City of Buffalo — Green Code
• City of Buffalo Planning

This guide is informational only. The current UDO, building type, mapped zone, and parcel-specific controls govern.