MC-3: Multiple Commercial District 3 Setback Requirements in Dallas

In the Dallas MC-3: Multiple Commercial District 3, structures must adhere to a minimum 15-foot front yard setback, which increases by an additional 20 feet for any portion of a building exceeding 45 feet in height. Side and rear yard setbacks are not required unless the MC-3 property is adjacent to or directly across an alley from a residential district, in which case a 20-foot minimum setback is mandated. Furthermore, the Dallas Development Code requires increased side and rear setbacks for tall structures through tower spacing regulations, adding one foot of setback for every two feet of height above 45 feet, up to a maximum of 30 feet.

Front Yard Setback Requirements

The City of Dallas establishes both standard and "urban form" setbacks for the front yards of properties located in the MC-3: Multiple Commercial District 3. These regulations are designed to maintain a consistent streetscape while preventing a "canyon effect" from taller commercial buildings [Section 51A-4.126(f)(4)(A)].

Setback Type	Requirement
Minimum Front Yard	15 feet
Urban Form Setback	An additional 20-foot setback (35 feet total) is required for any portion of a structure that exceeds 45 feet in height.

Side and Rear Yard Setback Requirements

Under the Dallas Development Code, side and rear yard requirements for the MC-3 district are primarily triggered by the presence of neighboring residential zones. If the MC-3 property does not share a boundary with the specified residential districts, there is no required minimum setback [Section 51A-4.126(f)(4)(B)].

Condition	Side and Rear Setback Requirement
General Case (No Residential Adjacency)	No minimum setback required.
Residential Adjacency	20-foot minimum setback when the lot is adjacent to or directly across an alley from an R, R(A), D, D(A), TH, TH(A), CH, MF, or MF(A) district.

Tower Spacing and Height-Based Adjustments

For high-density developments in Dallas MC-3 districts, the city requires "Tower Spacing" to ensure adequate light and air for adjacent properties. This regulation specifically affects the side and rear yards for the portions of a building that rise above the 45-foot height threshold [Section 51A-4.126(f)(4)(B)(ii)].

Calculation: For every two feet of height above 45 feet, the structure must be set back an additional one foot from the side or rear property line.
Maximum Requirement: This regulation does not require a total side or rear yard setback to exceed 30 feet.

Visual Intrusion and Proximity Restrictions

The MC-3 district in Dallas also limits the placement of balconies and openings. No portion of a balcony or opening that faces a residential district (R through MF-2(SAH) as listed in the code) may penetrate or be located above a residential proximity slope originating in that adjacent district [Section 51A-4.126(f)(4)(B)(ii)].

Summary Table of MC-3 Setbacks

Standard	Required Distance/Ratio
Front Yard (Base)	15 feet
Front Yard (Above 45' height)	35 feet
Side Yard (Base)	0 feet (or 20 feet if residentially adjacent)
Rear Yard (Base)	0 feet (or 20 feet if residentially adjacent)
Max Side/Rear (Tower Spacing)	30 feet

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