{
 "question": "What do T3-R, T3-L and T3-O zoning allow?",
 "url": "https://shenandoahmiami.com/answers/t3-zoning/",
 "answer": "In the City of Miami's Miami 21 code, all three T3 zones allow a single-family house. T3-L and T3-O also allow an ancillary dwelling unit; only T3-O allows a two-family house (duplex). Of 228 mapped Shenandoah sales in the 24 months to September 28, 2026, 175 sit in T3-R, 43 in T3-O and none in T3-L.",
 "short": "Duplexes only in T3-O",
 "category": "The neighborhood",
 "dateModified": "2026-10-30",
 "dataThrough": "2026-09-28",
 "author": {
  "name": "Gatien Salaun",
  "brokerage": "Coldwell Banker Realty",
  "license": "SL3347568",
  "url": "https://shenandoahmiami.com/about/"
 },
 "attribution": "Based on information from the Southeast Florida Multiple Listing Service (SEFMLS) or from MIAMI Association of REALTORS® for the period September 27, 2022 through September 28, 2026. Data is deemed reliable but is not guaranteed accurate by the MLS and may not reflect all real estate activity in the market.",
 "table": {
  "caption": "Miami 21 T3 rules, City of Miami, checked October 29, 2026, with Shenandoah sales by zone for the 24 months to September 28, 2026. Six more mapped sales sat in T6-8-O and four in T4 zones along the edges.",
  "columns": [
   "Miami 21 rule",
   "T3-R",
   "T3-L",
   "T3-O"
  ],
  "rows": [
   [
    "Single-family house",
    "Allowed",
    "Allowed",
    "Allowed"
   ],
   [
    "Ancillary dwelling unit",
    "Not allowed",
    "Allowed",
    "Allowed"
   ],
   [
    "Two-family house (duplex)",
    "Not allowed",
    "Not allowed",
    "Allowed"
   ],
   [
    "Density (units per acre)",
    "9",
    "9",
    "18"
   ],
   [
    "Minimum lot",
    "5,000 ft², 50 ft wide",
    "5,000 ft², 50 ft wide",
    "5,000 ft², 50 ft wide"
   ],
   [
    "Lot coverage, first floor",
    "50%",
    "50%",
    "50%"
   ],
   [
    "Height, main house",
    "2 stories",
    "2 stories",
    "2 stories"
   ],
   [
    "Shenandoah sales, 24 months",
    "175",
    "0",
    "43"
   ]
  ]
 }
}