Zoning › Texas › Collin County › Allen

Allen, TX Zoning

26 districts. 9 overlays.

Overview

Worth knowing

+ 7 more in Quirks & notes

Districts

res_sf 8res_mf 5retail 5warehouse 3office 2ag 1civic 1mu 1
CodeNameCategory Min lotHeight CoverageFAR Du/acParking Setbacks F/S/R
A-OAgriculture-Open Space Districtag43,560 sf[4]35 ft[5]30[6]———100[1] / 20[2] / 25[3]
R-1Single-Family Residential Estate District (R-1)res_sf40,000 sf[10]35 ft[11]30[12]—1[13]—40[7] / —[8] / 25[9]
R-1.5Single-Family Residential Estate District (R-1.5)res_sf30,000 sf[17]35 ft[18]30[19]—1.5[20]—35[14] / —[15] / 25[16]
R-2Single-Family Residential District (R-2)res_sf18,000 sf[24]35 ft[25]35[26]—2.1[27]—30[21] / —[22] / 25[23]
R-3Single-Family Residential District (R-3)res_sf12,000 sf[31]35 ft[32]35[33]—3[34]—30[28] / —[29] / 20[30]
R-4Single-Family Residential District (R-4)res_sf9,000 sf[38]35 ft[39]55[40]—3.8[41]—25[35] / —[36] / 15[37]
R-5Single-Family Residential District (R-5)res_sf7,500 sf[45]35 ft[46]55[47]—4.6[48]—25[42] / —[43] / 15[44]
R-6Single-Family Residential District (R-6)res_sf6,000 sf[52]35 ft[53]55[54]—5.2[55]—20[49] / —[50] / 10[51]
R-7Single-Family Residential District (R-7)res_sf5,000 sf[59]35 ft[60]55[61]—6.2[62]—20[56] / 15[57] / 10[58]
2-FDuplex Residential District (2-F)res_mf8,000 sf[66]35 ft[67]40[68]—9.6[69]—25[63] / 15[64] / 15[65]
THTownhome Residential District (TH)res_mf2,160 sf[73]35 ft[74]75[75]—10.8[76]—15[70] / 6[71] / 10[72]
MF-12Multifamily Residential District (MF-12)res_mf12,000 sf[80]35 ft[81]45[82]—12.1[83]—50[77] / 25[78] / 20[79]
MF-18Multifamily Residential District (MF-18)res_mf14,000 sf[87]35 ft[88]50[89]—18[90]—50[84] / 15[85] / 20[86]
MHMobile Home / Manufactured Home Park District (MH)res_mf4,000 sf[94]35 ft[95]————25[91] / 15[92] / 15[93]
GOGarden Office District (GO)office—45 ft[99]50[100]0.5[101]——100[96] / 50[97] / 0[98]
OOffice District (O)office—80 ft[105]50[106]1[107]——100[102] / 10[103] / 0[104]
LRLocal Retail District (LR)retail—35 ft[111]40[112]0.59[113]——25[108] / 10[109] / 0[110]
SCShopping Center District (SC)retail—45 ft[117]50[118]0.77[119]——25[114] / 10[115] / 0[116]
LCLight Commercial District (LC)retail—45 ft[123]50[124]1[125]——25[120] / 10[121] / 0[122]
GBGeneral Business District (GB)retail—45 ft[129]—2[130]——25[126] / 10[127] / 0[128]
CCCorridor Commercial District (CC)retail—160 ft[134]—1[135]——100[131] / 25[132] / 25[133]
ITIndustrial Technology District (IT)warehouse—45 ft[139]—1[140]——100[136] / 25[137] / 25[138]
LILight Industrial District (LI)warehouse—45 ft[144]—0.5[145]——100[141] / 25[142] / 50[143]
HIHeavy Industrial District (HI)warehouse—45 ft[149]—1[150]——100[146] / 25[147] / 25[148]
CFCommunity Facilities District (CF)civic—45 ft[154]————50[151] / 25[152] / 25[153]
DDDowntown District (DD) — base district / overlay hybridmu—4 ft[155]100[156]—32[157]1[158]— / — / —

Confidence: confirmed partial under review not found

Overlays

DD
Downtown District (and constituent CCO/RTO/CWCO/CO sub-overlays)
downtown_cbd
§ 4.08.19
PD
Planned Development district
planned_development
§ 4.08.17
CWCO
Cottonwood Creek Overlay (within DD)
environmental
§ 4.08.19.3.a.iii
AO
Agricultural-Open Space district (functions as low-intensity open-space holding district for newly annexed land)
environmental
§ 4.08.1
FPO
Floodplain Overlay (FEMA SFHA / floodplain)
floodplain
HDO
Historic District Overlay
historic
TOD
Transit-Oriented Development overlay
transit_oriented
AH_BONUS
Affordable Housing Density Bonus
affordable_housing
AICUZ
Airport / AICUZ / Part 77
airport_airspace
§ 4.15.1.1.c

State preemptions

Non-applicable laws (2)
not_applicable
Qualifying condition
Allen city population ~113,300 (2025 Census estimate) — FAILS city-population threshold of ≥150,000 required by SB 840. Collin County population ~1,251,273 (2025) passes the county gate, but the conjunctive AND predicate fails on the city prong. Inputs: city.population=113300 (vintage: Census 2025 estimate), county.population=1251273 (vintage: Census 2025 estimate), thresholds: city≥150000 AND county≥300000.
applicable
Qualifying condition
SB 15 applies statewide to qualifying small lots (≤4,000 sf) with no city-population threshold. Allen is subject to SB 15 for any small-lot subdivision meeting the criteria. Inputs: parcel.lot_area_sf≤4000 (condition), effective 2025-09-01.

Adopted building codes

Home rule; major cities on 2024 IBC

IBC
2024
IRC
2021
NEC
2023
IFC
Local adoption
IECC (Residential)
2015
IECC (Commercial)
2015

Click a code label to open its state-by-state adoption atlas.

Amendment history

DateKindCitation
2026-01-01supplement effectiveMunicode publication ledger
2024-02-27amendment effective§ 4.08.19 (Ord. No. 4068-2-24, § 1.A, 2-27-2024)
2023-01-10amendment effective§ 4.02.1 (Ord. No. 3976-1-23, § 1.B, 1-10-2023)
2002-10-08adoption§ 4.02.1 (Ord. No. 2101-10-02, § 1, 10-8-2002)

Quirks & notes

Formulas

Definitions

height
Grade to highest point of structure.
lot_coverage
Building footprint / lot area.
far
Gross floor area / lot area.
du_ac
Dwelling units per gross acre.
setback_front
Front property line to nearest building face.
setback_side
Side property line to nearest building face.
setback_rear
Rear property line to nearest building face.
parking
Spaces per dwelling unit unless noted.

Capacity calculations

max_footprint_sf
lot_area_sf * lot_coverage
max_gfa_sf
lot_area_sf * far
buildable_width_ft
lot_width_ft - setback_side_ft * 2
buildable_depth_ft
lot_depth_ft - setback_front_ft - setback_rear_ft
max_stories_approx
max_height_ft / 10

Massing explorer

Interactive 3D comparison across every district. Drag to orbit, scroll to zoom, use the slider to walk districts, and toggle applicable overlays in the right-side panel.

—
—
Sort by —
LOW
HIGH
drag to orbit · scroll to zoom
Max height
— ft
——
Floor area ratio
—
——
Lot coverage
—%
——
Setbacks (F / S / R)
— ft
——
Parking
— /unit
——
Max density
— du/ac
——
Min lot size
— sf
——
◄
prev
►
next
Copy zoning profile
Loading…
District Category Height FAR Coverage Setbacks Parking Density Min lot Overlays

Sources & references

Primary source
https://library.municode.com/tx/allen/codes/land_development_code
Secondary sources
Citations
  1. [1] § 4.15.3 (Front Yard Setback both R-O-W >100 ft and <100 ft, AO = 100)
  2. [2] § 4.15.3 (Side Yard Setback in feet, AO = 20)
  3. [3] § 4.15.3 (Rear Yard Setback in feet, AO = 25)
  4. [4] § 4.15.3 (Lot size 1 acre = 43,560 sf, AO column)
  5. [5] § 4.15.3 (Maximum Height in feet, AO = 35)
  6. [6] § 4.15.3 (Percent lot coverage, AO = 30)
  7. [7] § 4.15.2 (Front Yard, R-1 = 40 ft)
  8. [8] § 4.15.2 (Side Yard % of lot width, R-1 = 10)
  9. [9] § 4.15.2 (Rear Yard, R-1 = 25 ft)
  10. [10] § 4.15.2 (Minimum Lot Area, R-1 = 40,000 sq ft)
  11. [11] § 4.15.2 (Building Height feet, R-1 = 35)
  12. [12] § 4.15.2 (Percent Lot Coverage, R-1 = 30)
  13. [13] § 4.15.2 (Dwelling units/acre, R-1 = 1)
  14. [14] § 4.15.2 (Front Yard, R-1.5 = 35 ft)
  15. [15] § 4.15.2 (Side Yard % of lot width, R-1.5 = 10)
  16. [16] § 4.15.2 (Rear Yard, R-1.5 = 25 ft)
  17. [17] § 4.15.2 (Minimum Lot Area, R-1.5 = 30,000 sq ft)
  18. [18] § 4.15.2 (Building Height feet, R-1.5 = 35)
  19. [19] § 4.15.2 (Percent Lot Coverage, R-1.5 = 30)
  20. [20] § 4.15.2 (Dwelling units/acre, R-1.5 = 1.5)
  21. [21] § 4.15.2 (Front Yard, R-2 = 30 ft)
  22. [22] § 4.15.2 (Side Yard % of lot width, R-2 = 10)
  23. [23] § 4.15.2 (Rear Yard, R-2 = 25 ft)
  24. [24] § 4.15.2 (Minimum Lot Area, R-2 = 18,000 sq ft)
  25. [25] § 4.15.2 (Building Height feet, R-2 = 35)
  26. [26] § 4.15.2 (Percent Lot Coverage, R-2 = 35)
  27. [27] § 4.15.2 (Dwelling units/acre, R-2 = 2.1)
  28. [28] § 4.15.2 (Front Yard, R-3 = 30 ft)
  29. [29] § 4.15.2 (Side Yard % of lot width, R-3 = 10)
  30. [30] § 4.15.2 (Rear Yard, R-3 = 20 ft)
  31. [31] § 4.15.2 (Minimum Lot Area, R-3 = 12,000 sq ft)
  32. [32] § 4.15.2 (Building Height feet, R-3 = 35)
  33. [33] § 4.15.2 (Percent Lot Coverage, R-3 = 35)
  34. [34] § 4.15.2 (Dwelling units/acre, R-3 = 3)
  35. [35] § 4.15.2 (Front Yard, R-4 = 25 ft)
  36. [36] § 4.15.2 (Side Yard % of lot width, R-4 = 10)
  37. [37] § 4.15.2 (Rear Yard, R-4 = 15 ft)
  38. [38] § 4.15.2 (Minimum Lot Area, R-4 = 9,000 sq ft)
  39. [39] § 4.15.2 (Building Height feet, R-4 = 35)
  40. [40] § 4.15.2 (Percent Lot Coverage, R-4 = 55)
  41. [41] § 4.15.2 (Dwelling units/acre, R-4 = 3.8)
  42. [42] § 4.15.2 (Front Yard, R-5 = 25 ft)
  43. [43] § 4.15.2 (Side Yard % of lot width, R-5 = 10)
  44. [44] § 4.15.2 (Rear Yard, R-5 = 15 ft)
  45. [45] § 4.15.2 (Minimum Lot Area, R-5 = 7,500 sq ft)
  46. [46] § 4.15.2 (Building Height feet, R-5 = 35)
  47. [47] § 4.15.2 (Percent Lot Coverage, R-5 = 55)
  48. [48] § 4.15.2 (Dwelling units/acre, R-5 = 4.6)
  49. [49] § 4.15.2 (Front Yard, R-6 = 20 ft)
  50. [50] § 4.15.2 (Side Yard % of lot width = 10; alternative pattern '1 & 9 or 5 & 5' shown in side-yard-feet row aligned to R-6)
  51. [51] § 4.15.2 (Rear Yard, R-6 = 10 ft)
  52. [52] § 4.15.2 (Minimum Lot Area, R-6 = 6,000 sq ft)
  53. [53] § 4.15.2 (Building Height feet, R-6 = 35)
  54. [54] § 4.15.2 (Percent Lot Coverage, R-6 = 55)
  55. [55] § 4.15.2 (Dwelling units/acre, R-6 = 5.2)
  56. [56] § 4.15.2 (Front Yard, R-7 = 20 ft)
  57. [57] § 4.15.2 (Side Yard, in feet — R-7 column)
  58. [58] § 4.15.2 (Rear Yard, R-7 = 10 ft)
  59. [59] § 4.15.2 (Minimum Lot Area, R-7 = 5,000 sq ft)
  60. [60] § 4.15.2 (Building Height feet, R-7 = 35)
  61. [61] § 4.15.2 (Percent Lot Coverage, R-7 = 55)
  62. [62] § 4.15.2 (Dwelling units/acre, R-7 = 6.2)
  63. [63] § 4.15.2 (Front Yard, 2-F = 25 ft, note (5))
  64. [64] § 4.15.2 (Side Yard in feet, 2-F = 15)
  65. [65] § 4.15.2 (Rear Yard, 2-F = 15)
  66. [66] § 4.15.2 (Minimum Lot Area, 2-F = 8,000 sq ft)
  67. [67] § 4.15.2 (Building Height feet, 2-F = 35)
  68. [68] § 4.15.2 (Percent Lot Coverage, 2-F = 40)
  69. [69] § 4.15.2 (Dwelling units/acre, 2-F = 9.6)
  70. [70] § 4.15.2 (Front Yard, TH = 15 ft note (8))
  71. [71] § 4.15.2 (Side Yard in feet, TH = 6 note (8))
  72. [72] § 4.15.2 (Rear Yard, TH = 10 note (8))
  73. [73] § 4.15.2 (Minimum Lot Area, TH = 2,160 sq ft)
  74. [74] § 4.15.2 (Building Height feet, TH = 35)
  75. [75] § 4.15.2 (Percent Lot Coverage, TH = 75)
  76. [76] § 4.15.2 (Dwelling units/acre, TH = 10.8)
  77. [77] § 4.15.2 (Front Yard, MF-12 = 50 ft notes (1)(5))
  78. [78] § 4.15.2 (Side Yard in feet, MF-12 = 25 note (2))
  79. [79] § 4.15.2 (Rear Yard, MF-12 = 20 note (2))
  80. [80] § 4.15.2 (Minimum Lot Area, MF-12 = 12,000 sq ft)
  81. [81] § 4.15.2 (Building Height feet, MF-12 = 35)
  82. [82] § 4.15.2 (Percent Lot Coverage, MF-12 = 45)
  83. [83] § 4.15.2 (Dwelling units/acre, MF-12 = 12.1)
  84. [84] § 4.15.2 (Front Yard, MF-18 = 50 ft notes (1)(5))
  85. [85] § 4.15.2 (Side Yard in feet, MF-18 column = 15)
  86. [86] § 4.15.2 (Rear Yard, MF-18 = 20 note (2))
  87. [87] § 4.15.2 (Minimum Lot Area, MF-18 = 14,000 sq ft)
  88. [88] § 4.15.2 (Building Height feet, MF-18 = 35 note (1))
  89. [89] § 4.15.2 (Percent Lot Coverage, MF-18 = 50)
  90. [90] § 4.15.2 (Dwelling units/acre, MF-18 = 18)
  91. [91] § 4.15.2 (Front Yard, M-H = 25 ft)
  92. [92] § 4.15.2 (Side Yard in feet, M-H = 15)
  93. [93] § 4.15.2 (Rear Yard, M-H = 15)
  94. [94] § 4.15.2 (Minimum Lot Area, M-H = 4,000 sq ft)
  95. [95] § 4.15.2 (Building Height feet, M-H = 35)
  96. [96] § 4.15.3 (Front Yard Setback R-O-W >100 ft, GO = 100, note (2)) ; smaller R-O-W front-yard column = 25 ft note (1)
  97. [97] § 4.15.3 (Side Yard Setback in feet, GO = 50)
  98. [98] § 4.15.3 (Rear Yard Setback, GO = 0; rear adjacent to residential = 50 ft)
  99. [99] § 4.15.3 (Height in feet, GO = 45)
  100. [100] § 4.15.3 (Percent lot coverage, GO = 50)
  101. [101] § 4.15.3 (Floor Area Ratio, GO = 0.5:1)
  102. [102] § 4.15.3 (Front Yard Setback R-O-W >100 ft, O = 100 note (2); R-O-W <100 ft = 25 note (1))
  103. [103] § 4.15.3 (Side Yard Setback in feet, O = 10)
  104. [104] § 4.15.3 (Rear Yard Setback, O = 0; rear adjacent to residential = 50 ft)
  105. [105] § 4.15.3 (Height in feet, O = 80, note (7))
  106. [106] § 4.15.3 (Percent lot coverage, O = 50)
  107. [107] § 4.15.3 (Floor Area Ratio, O = 1:01)
  108. [108] § 4.15.3 (Front Yard Setback, LR = 25 note (1) for both ROW > and < 100 ft)
  109. [109] § 4.15.3 (Side Yard Setback in feet, LR = 10)
  110. [110] § 4.15.3 (Rear Yard Setback, LR = 0; rear adjacent to residential = 25 ft)
  111. [111] § 4.15.3 (Height in feet, LR = 35)
  112. [112] § 4.15.3 (Percent lot coverage, LR = 40)
  113. [113] § 4.15.3 (Floor Area Ratio, LR = 01:01.7 → 1/1.7 ≈ 0.59)
  114. [114] § 4.15.3 (Front Yard Setback, SC = 25 note (1))
  115. [115] § 4.15.3 (Side Yard Setback in feet, SC = 10)
  116. [116] § 4.15.3 (Rear Yard Setback, SC = 0; rear adjacent residential = 50)
  117. [117] § 4.15.3 (Height in feet, SC = 45)
  118. [118] § 4.15.3 (Percent lot coverage, SC = 50)
  119. [119] § 4.15.3 (Floor Area Ratio, SC = 01:01.3 → 1/1.3 ≈ 0.77)
  120. [120] § 4.15.3 (Front Yard Setback, LC = 25 note (1))
  121. [121] § 4.15.3 (Side Yard Setback in feet, LC = 10)
  122. [122] § 4.15.3 (Rear Yard Setback, LC = 0; rear adjacent residential = 50)
  123. [123] § 4.15.3 (Height in feet, LC = 45)
  124. [124] § 4.15.3 (Percent lot coverage, LC = 50)
  125. [125] § 4.15.3 (Floor Area Ratio, LC = 1:01)
  126. [126] § 4.15.3 (Front Yard Setback, GB = 25 note (1))
  127. [127] § 4.15.3 (Side Yard Setback in feet, GB = 10)
  128. [128] § 4.15.3 (Rear Yard Setback, GB = 0; rear adjacent residential = 50)
  129. [129] § 4.15.3 (Height in feet, GB = 45)
  130. [130] § 4.15.3 (Floor Area Ratio, GB = 2:01)
  131. [131] § 4.15.3 (Front Yard Setback R-O-W >100 ft, CC = 100 notes (2)(3)(8); ROW <100 ft = 50 notes (2)(8))
  132. [132] § 4.15.3 (Side Yard Setback in feet, CC = 25)
  133. [133] § 4.15.3 (Rear Yard Setback, CC = 25)
  134. [134] § 4.15.3 (Height in feet, CC = 160 note (7))
  135. [135] § 4.15.3 (Floor Area Ratio, CC = 1:01); Retail FAR = 0.3:1
  136. [136] § 4.15.3 (Front Yard Setback R-O-W >100 ft, IT = 100 note (2); ROW <100 ft = 50 note (2))
  137. [137] § 4.15.3 (Side Yard Setback in feet, IT = 25)
  138. [138] § 4.15.3 (Rear Yard Setback, IT = 25)
  139. [139] § 4.15.3 (Height in feet, IT = 45)
  140. [140] § 4.15.3 (Floor Area Ratio, IT = 1:01)
  141. [141] § 4.15.3 (Front Yard Setback R-O-W >100 ft, LI = 100 note (2); ROW <100 ft = 50 note (2))
  142. [142] § 4.15.3 (Side Yard Setback in feet, LI = 25)
  143. [143] § 4.15.3 (Rear Yard Setback, LI = 50)
  144. [144] § 4.15.3 (Height in feet, LI = 45)
  145. [145] § 4.15.3 (Floor Area Ratio, LI = 1:02 → 1/2 = 0.5)
  146. [146] § 4.15.3 (Front Yard Setback R-O-W >100 ft, HI = 100 notes (2)(3); ROW <100 ft = 50 note (2))
  147. [147] § 4.15.3 (Side Yard Setback in feet, HI = 25)
  148. [148] § 4.15.3 (Rear Yard Setback, HI = 25)
  149. [149] § 4.15.3 (Height in feet, HI = 45)
  150. [150] § 4.15.3 (Floor Area Ratio, HI = 1:01)
  151. [151] § 4.15.3 (Front Yard Setback R-O-W >100 ft = 50; CF inherits most-permissive-adjacent-district rule for the rest)
  152. [152] § 4.15.3 (CF column, side yard row)
  153. [153] § 4.15.3 (CF column, rear yard row)
  154. [154] § 4.15.3 (CF column — defers to most-permissive adjacent district)
  155. [155] § 4.08.19 (downtown district area-and-height table)
  156. [156] § 4.08.19 (LOT COVERAGE row — RTO max 100%)
  157. [157] § 4.08.19 (DENSITY DU/ACRE row — CCO 32, CO 32, RTO 18, CWCO 18 base/up to 45 with bonus)
  158. [158] § 4.08.19 (urban residential development minimum parking 1 space/du)

Research status

Publication gates

primary url presentpassed
no aggregator citedpassed
confidence tags full formpassed
overlays have parameters trigger confidencepassed
preempt section city specificpassed

Data quality

92%completeness145 confirmed6 partial4 not found
Documented gaps
  • Floodplain Overlay (FPO) and Historic District Overlay (HDO) marked not_found within Article IV scope; Article V (Special Zones) not retrieved this pass — likely contains the floodplain regime.
  • Parking ratios per district not present in § 4.15.2 / § 4.15.3 dimensional schedules; parking is governed elsewhere in Article VII (Zoning Development Standards), not retrieved this pass.
  • R-7 side-yard-feet value carries an internal table-cell-count ambiguity (parsed HTML had one fewer cell than columns); marked partial pending PDF cross-check.

Known issues

status:shippedpriority:mediumscope:article-iv-onlyfollowup:fetch-article-v-floodplainfollowup:fetch-article-vii-parking

Other cities in this state

Nearest-alphabetical profiles. Click through to compare zoning patterns side-by-side.

AmarilloCedar HillEl PasoGeorgetownLaredoMcAllenOdessaRichardson