MU-3(SAH) Mixed Use District 3 Affordable: Permitted and Prohibited Uses
The MU-3(SAH) Mixed Use District 3 Affordable in the City of Dallas is a high-density zoning designation designed to integrate retail, office, and multifamily residential uses while providing specific density bonuses for affordable housing developments. Principal uses in the MU-3(SAH) district range from residential hotels and large-scale retail to medical laboratories, while certain agricultural accessory uses, such as private stables, are strictly prohibited by the City of Dallas [Section 51A-4.125(f)].
Permitted Principal Uses in MU-3(SAH)
The City of Dallas categorizes permitted uses within the MU-3(SAH) district into several functional groups. Under the Dallas Development Code, the following uses are allowed, subject to the specific conditions noted (such as Specific Use Permits [SUP] or Residential Adjacency Review [RAR]).
Residential and Lodging Uses
The MU-3(SAH) district is a high-density residential environment. Permitted residential and lodging uses include:
- Residential: Multifamily, retirement housing, duplex, residential hotel, and college dormitory, fraternity, or sorority house [Section 51A-4.125(f)(2)(I)].
- Lodging: Hotel or motel (subject to RAR or SUP), extended stay hotel or motel (by SUP), and short-term rental lodging [Section 51A-4.125(f)(2)(E)].
- Shelter: Overnight general purpose shelter [Section 51A-4.205(2.1)].
Retail and Personal Service Uses
The City of Dallas allows a broad range of commercial activities in the MU-3(SAH) district to support high-density living:
- General Retail: Food stores and general merchandise stores of all sizes (those 100,000 square feet or larger require an SUP) [Section 51A-4.125(f)(2)(J)].
- Service: Personal service uses, dry cleaning/laundry, furniture store, and mortuary or wedding chapel.
- Dining: Restaurants without drive-in or drive-through service (RAR required); restaurants with drive-in or drive-through service (Development Impact Review [DIR] required) [Section 51A-4.210].
- Entertainment: Theaters and commercial amusement (inside). Note: Commercial amusement (outside) is only permitted by SUP.
Office and Professional Uses
The MU-3(SAH) district accommodates professional and medical employment:
- Office: General office and medical clinic or ambulatory surgical center.
- Financial: Financial institutions with or without drive-in windows (DIR required for drive-in).
- Establishments: Alternative financial establishments are only permitted by SUP [Section 51A-4.125(f)(2)(G)].
Industrial, Wholesale, and Utility Uses
While primarily a residential and retail district, the City of Dallas allows limited industrial and utility support:
- Industrial: Gas drilling and production (by SUP) and temporary concrete or asphalt batching plants (by SUP) [Section 51A-4.125(f)(2)(C)].
- Wholesale: Trade centers [Section 51A-4.213].
- Utilities: Electrical substations, local utilities, and police or fire stations. Radio, television, or microwave towers require RAR [Section 51A-4.125(f)(2)(L)].
Technical Development Standards for MU-3(SAH)
Development in the MU-3(SAH) district must adhere to specific yard, lot, and space regulations. These standards vary depending on whether the project qualifies as a "Mixed Use Project" (MUP) or a Standard Affordable Housing (SAH) project.
| Standard | MU-3(SAH) Requirement |
|---|---|
| Minimum Front Yard | 15 Feet [Section 51A-4.125(f)(4)(A)] |
| Minimum Side/Rear Yard | 30 Feet (if adjacent to R, D, TH, or CH districts) |
| Max Floor Area Ratio (Base) | 3.2 [Section 51A-4.125(f)(4)(D)] |
| Max Floor Area Ratio (MUP) | 4.5 (if 3+ use categories including residential) |
| Maximum Building Height | 135 Feet (Base); 180-270 Feet (with MUP/SAH bonuses) |
| Maximum Lot Coverage | 80% [Section 51A-4.125(f)(4)(F)] |
Off-Street Parking and Loading
The City of Dallas mandates parking based on the specific use within the MU-3(SAH) district.
| Use Category | Required Parking Space Ratio |
|---|---|
| Multifamily (under 20 units) | No minimum required [Section 51A-4.301] |
| Multifamily (200+ units) | 1 space per dwelling unit |
| General Office | 1 space per 333 square feet |
| Retail / Personal Service | 1 space per 200 or 250 square feet |
| Hotel / Motel | 1.25 spaces per room [Section 51A-13.402] |
Prohibited and Restricted Uses
Any use not explicitly listed as permitted in the MU-3(SAH) district is prohibited by the City of Dallas. Furthermore, the code identifies specific prohibited accessory uses and restrictive conditions:
- Prohibited Accessory Use: Private stables are expressly forbidden in the MU-3(SAH) district [Section 51A-4.125(f)(3)(A)].
- Residential Adjacency: Uses such as auto service centers, car washes, and outside commercial amusement are subject to Mandatory Residential Adjacency Review (RAR) to protect the integrity of nearby single-family neighborhoods [Section 51A-4.125(f)(2)].
- Signs: Attached non-premise signs are only allowed by SUP [Section 51A-4.125(f)(2)(F)].
- Mechanical Areas: Garbage collection and mechanical equipment areas must be located at least 20 feet from a residential building site [Section 51A-4.125(f)(8)(C)].
Sections Cited
- Section 51A-4.105: Interpretation of District Regulations
- Section 51A-4.125: Mixed Use Districts
- Section 51A-4.205: Lodging Uses
- Section 51A-4.209: Residential Uses
- Section 51A-4.210: Retail and Personal Service Uses
- Section 51A-4.212: Utility and Public Service Uses
- Section 51A-4.213: Wholesale, Distribution, and Storage Uses
- Section 51A-4.301: Off-Street Parking Regulations
- Section 51A-11.102: Definitions (Affordable Housing)
- Section 51A-13.402: Required Parking (Form Districts)