Zoning › Iowa › Polk County › Des Moines

Des Moines, IA Zoning

Form-based-zoning. 31 districts · 5 overlays · 3 applicable state preemptions.

Overview

Code type
form-based
Naming convention
mixed
Naming convention by category
neighborhood_nneighborhood-character-coded (N1a/N1b largest lots and estate character; N2a/N2b contemporary mid-large; N3a/N3b/N3c 1950s-70s ranch/split-level/cottage; N4 1920s-30s masonry-cottage; N5 Victorian/Revival/Arts-and-Crafts; NM mobile home parks). Each N district paired with one building-type prescription in Ch. 135.
neighborhood_mix_nxintensity-tiered (NX1 lowest mix, NX3 highest; NX2a adds commercial home-occupation over NX2).
downtown_dxtier-coded (DX1 highest intensity / 5-15 stories base / unlimited high-rise; DX2 mid 3-8 stories; DXR downtown residential 3-8 stories).
mixed_use_xtier-coded (MX1 neighborhood, MX2 regional, MX3 auto-oriented; RX1/RX2 residential-mix transitional; CX commercial; EX employment-mix).
industrial_itier-coded (I1 general, I2 higher-intensity).
public_puse-coded (P1 parks/open space; P2 civic/institutional).
ag_floodletter-coded (A agriculture; F floodplain per Ch. 50).
legacy_pudNo new PUDs after 2019-12-15; existing PUDs governed by their approving ordinance.

Form-based hybrid: Ch. 134 (districts/uses/procedures) + Ch. 135 (form standards by building type). N districts use a Neighborhood Character-Based system; NX/DX/MX/RX/CX/EX/I/P follow tier-coded conventions. The -2/-4 N-district extensions cap units per lot. The -V X/I extension prohibits vehicle sales. Capitol Dominance Area (Ch. 135 §2.18) imposes a 75 ft viewshed-based downtown height cap. Sherman Hill Build-to Zones (Ch. 135 §2.19) override default front setbacks within the historic district. F-district floodplain is regulated jointly with Ch. 50 (NFIP).

Districts

res_sf 9res_mf 5mu 5spec 4cbd 3ind 3com 1ag 1
CodeNameCategory Min lotHeight CoverageFAR Du/acParking Setbacks F/S/R
N1aNeighborhood 1a (estate large-lot)res_sf10,000 sf[4]42 ft[5]0.25[6]——1[7]45[1] / 10[2] / 30[3]
N1bNeighborhood 1b (large lot)res_sf8,000 sf[11]42 ft[12]0.3[13]——1[14]30[8] / 10[9] / 30[10]
N2aNeighborhood 2a (contemporary large)res_sf9,000 sf[18]30 ft[19]0.35[20]——1[21]25[15] / 7[16] / 30[17]
N2bNeighborhood 2b (contemporary mid)res_sf7,500 sf[25]30 ft[26]0.35[27]——1[28]25[22] / 7[23] / 30[24]
N3aNeighborhood 3a (1950s-70s ranch/split-level)res_sf7,500 sf[32]18 ft[33]0.35[34]——1[35]25[29] / 7[30] / 40[31]
N3bNeighborhood 3b (1950s-70s mix incl. cottage)res_sf6,000 sf[39]20 ft[40]0.35[41]——1[42]25[36] / 7[37] / 40[38]
N3cNeighborhood 3c (worker cottage)res_sf6,000 sf[46]20 ft[47]0.35[48]——1[49]25[43] / 7[44] / 40[45]
N4Neighborhood 4 (masonry/stone cottage)res_sf6,000 sf[53]20 ft[54]0.35[55]——1[56]35[50] / 7[51] / 40[52]
N5Neighborhood 5 (Victorian/Revival/Arts-and-Crafts)res_sf6,750 sf[60]30 ft[61]0.3[62]——1[63]25[57] / 7[58] / 30[59]
NMNeighborhood Mobile (manufactured home park)res_mf—[67]—[68]—[69]——1[70]—[64] / —[65] / —[66]
NX1Neighborhood Mix 1 (single+multi mix)res_mf4,800 sf[74]30 ft[75]0.35[76]——1[77]25[71] / 7[72] / 30[73]
NX2Neighborhood Mix 2 (single + scaled multi)res_mf4,800 sf[81]77 ft[82]0.45[83]——1[84]25[78] / 7[79] / 25[80]
NX2aNeighborhood Mix 2a (NX2 + commercial home-occupation)res_mf4,800 sf[88]77 ft[89]0.45[90]——1[91]25[85] / 7[86] / 25[87]
NX3Neighborhood Mix 3 (multi-household incl. taller buildings)res_mf7,200 sf[95]140 ft[96]0.45[97]——1[98]15[92] / 7[93] / 25[94]
DX1Downtown 1 (highest-intensity mixed-use core)cbd—-1 ft[102]0.95[103]——0[104]0[99] / 0[100] / 0[101]
DX2Downtown 2 (mid-level mixed-use)cbd—112 ft[108]0.95[109]——0[110]0[105] / 0[106] / 0[107]
DXRDowntown Residentialcbd7,200 sf[114]140 ft[115]0.8[116]——0[117]0[111] / 0[112] / 0[113]
MX1Mixed-Use 1 (neighborhood-scale)mu—36 ft[121]0.85[122]——0.6[123]0[118] / 0[119] / 5[120]
MX2Mixed-Use 2 (regional-scale)mu—70 ft[127]0.9[128]——0.6[129]0[124] / 0[125] / 5[126]
MX3Mixed-Use 3 (auto-oriented)mu—112 ft[133]0.75[134]——1[135]15[130] / 10[131] / 15[132]
RX1Residential Mixed-Use 1 (transitional)mu7,200 sf[139]77 ft[140]0.3[141]——1[142]12[136] / 7[137] / 30[138]
RX2Residential Mixed-Use 2 (higher than RX1)mu7,200 sf[146]140 ft[147]0.45[148]——1[149]15[143] / 7[144] / 25[145]
CXCommercial Mixed-Use (large-scale single-use commercial)com—112 ft[153]0.75[154]——1[155]15[150] / 10[151] / 15[152]
EXEmployment Mixed-Use (light-industrial / mid-scale employment)ind—70 ft[159]0.7[160]——1[161]5[156] / 15[157] / 15[158]
I1Industrial 1 (general)ind—75 ft[165]0.65[166]——0.5[167]25[162] / 0[163] / 0[164]
I2Industrial 2 (higher intensity)ind—75 ft[171]0.65[172]——0.5[173]25[168] / 0[169] / 0[170]
P1Public 1 (parks/open space)spec——[177]—[178]———[179]—[174] / —[175] / —[176]
P2Public 2 (civic/institutional)spec—75 ft[183]0.75[184]——1[185]15[180] / 10[181] / 15[182]
AAgricultureag10,000 sf[189]42 ft[190]0.25[191]——1[192]45[186] / 10[187] / 30[188]
FFlood (floodplain/floodway)spec——[196]—[197]———[198]—[193] / —[194] / —[195]
PUDPlanned Unit Development (Legacy)spec——[202]—[203]———[204]—[199] / —[200] / —[201]

Confidence: confirmed partial under review not found

Overlays

CAPITOL-DOMINANCE
Capitol Dominance Area
DT
Ch. 135 §2.18 — Capitol Dominance Area

Lots within the highlighted area shown in Figure 135-2.18-A surrounding the Iowa State Capitol (East 9th – East 14th Streets area on the east side of the Des Moines River). Refer to the city's GIS system for specific boundary.

max_building_height_ft75
citationCh. 135 §2.18.2.A: 'Any lot within the highlighted area in Figure 135-2.18-A shall have a maximum height of 75 feet.'
appurtenance_height_capPer §2.18.2.B — viewshed-analysis-driven cap on towers/utilities
type_1_design_alternativeAvailable for relief subject to large-scale development plan approval and 3D modeling (§2.18.3.A)
type_2_design_alternativeAvailable for relief with detailed architectural and viewshed analysis (§2.18.3.B)
SHERMAN-HILL-BTZ
Sherman Hill Neighborhood Build-to Zones
HP
Ch. 135 §2.19 — Sherman Hill Neighborhood Build-to Zones

Block faces within the Sherman Hill neighborhood (historic district north-northwest of Downtown), enumerated in Table 135-2.19-1.

build_to_zone_methodBlock-face-specific minimum and maximum from front lot line per Table 135-2.19-1
applies_to_building_typesHouse D, Flat A/B, Row Building
citationCh. 135 §2.19 Table 135-2.19-1; cross-referenced from §2.16.3 House D NX2/NX2a 'Build-to zone for Sherman Hill required'
F-FLOOD
F (Flood) District / Ch. 50 Floodplain Ordinance
FP
Ch. 134 §2.2.8.B + Ch. 50 of the Des Moines Municipal Code

FEMA Special Flood Hazard Area (SFHA) along Des Moines River, Raccoon River, Walnut Creek, Fourmile Creek per Polk County FIRMs (Community ID #190227). F district mapped on the city zoning map to coincide with SFHA.

implementation_viaCh. 50 of Des Moines Municipal Code
citationCh. 134 §2.2.8.B: 'F is intended for flood plain and floodways pursuant to chapter 50 of this code.'
nfip_community_id190227 (Polk County / Des Moines)
regulatory_layerelevation-above-BFE, floodway-zero-rise, compensatory storage per 44 CFR 60.3
KDSM-AIRPORT
Des Moines International Airport (KDSM) Airspace
AP
Iowa Code Ch. 329 (Airport Zoning Act); FAA 14 CFR Part 77

FAA Part 77 imaginary surfaces around KDSM (5800 Fleur Drive, southern Des Moines); approach, transitional, horizontal, and conical surfaces extending miles outward from the runway ends.

implementing_authorityIowa Code Ch. 329 + FAA 14 CFR Part 77
max_height_constraintPer Part 77 imaginary surfaces (varies by distance and bearing from runway)
form_7460_notice_requiredFor any structure penetration of the Part 77 surfaces
citationCh. 134 §4.1 references Iowa Code Ch. 329 airport zoning; 14 CFR 77.9 imposes federal notice
HISTORIC-LOCAL
Historic Preservation (Local Designation)
HP
Ch. 102 of the Des Moines Municipal Code

Locally-designated historic districts and individual landmarks within city limits per Des Moines Historic Preservation Commission designations. Sherman Hill, Owl's Head, and other districts.

implementation_viaCh. 102 of Des Moines Municipal Code (separate from Ch. 134 zoning)
national_register_overlapSome local districts overlap with NRHP listings
certificate_of_appropriatenessRequired for exterior alterations in locally-designated districts
citationCh. 134 §6 cross-references historic preservation commission review pursuant to Ch. 102

State preemptions

Iowa Code §414.1(2) — Short-Term Rental Preemptionapplies
Qualifying condition
Statewide preemption applies to all Iowa cities regardless of population. Des Moines is a city under Iowa Code Title IX (Local Government) and Iowa Code Chapter 414 (Municipal Zoning); satisfies the predicate (Iowa's largest city, ~212,421 per 2024 ACS / Vintage 2024). Evaluated 2026-05-20.
Source
Iowa Code §414; U.S. Census Vintage 2024 population estimates
Effect
Des Moines cannot zone-ban STRs out of residential N/NX districts; STRs must be classified as a residential land use. City retains authority over noise, parking, life-safety, occupancy caps, and hotel/motel tax registration.
Iowa Code §414.28 — Manufactured Home Zoning (Cities)applies
Qualifying condition
Statewide preemption applies to all Iowa cities. Des Moines is a municipality subject to Iowa Code Ch. 414. Predicate met. Evaluated 2026-05-20.
Source
Iowa Code §414.28; §414.28A
Effect
Des Moines SHALL NOT adopt or enforce zoning that disallows the plans/specifications of a proposed residential structure SOLELY because it is a manufactured home. The NM (Neighborhood Mobile) district specifically accommodates manufactured-home parks per Ch. 134 §2.2.5.J. Outside NM, manufactured homes in N1a/N1b/N2a/N2b/N3*/N4/N5/NX* must be evaluated on the same setback / minimum-square-footage / lot-size standards applied to site-built single-family dwellings. §414.28A prohibits zoning that makes land-leased manufactured-home communities infeasible.
Iowa SF 592 — Accessory Dwelling Units (2025)applies
Qualifying condition
Statewide preemption applies to all Iowa cities AND counties. Des Moines is a city; predicate met. SF 592 mandates 'a city AND a county SHALL allow a minimum of one accessory dwelling unit on the same lot as a single-family residence.' Evaluated 2026-05-20; effective 2025-07-01 (past).
Source
2025 Iowa Acts SF 592 (91st GA)
Effect
Des Moines must allow at least one ADU on the same lot as any single-family residence in N1a, N1b, N2a, N2b, N3a, N3b, N3c, N4, N5, NX1, NX2, NX2a, NX3, A, and any other district where single-family residential is permitted. ADU size cap = greater of 1,000 sf OR 50% of the size of the single-family residence. Carveouts: state historic building code, deed restrictions, HOA rules. Parking minimums not preempted but cannot 'make infeasible' the ADU mandate.

Adopted building codes

Statewide

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

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

Amendment history

DateKindCitation
2026-05-20retrieved atMunicode PDF retrieval + EncodePlus TOC corroboration 2026-05-20
2022-05-09supplement effectiveOrd. 16,125 dated 05/09/22 — most recent amendment listed on Ch. 134 PDF front matter
2019-12-15effectiveCh. 134 §1.3 effective date
2019-10-16adoptionOrd. 15,816 dated 10/16/19 — Ch. 134 base adoption

Formulas

Definitions

height
Stories + feet per Ch. 135 §3.7 measurement (floor to floor)
lot_coverage
Building footprint / lot area per Ch. 135 §3.6
impervious_cover
All impervious surfaces / lot area per Ch. 135 §3.6
setback_front
Front lot line to nearest building face; front setback averaging may apply per Ch. 135 §3.4
setback_side
Side lot line to building face; interior side + street side distinguished
setback_rear
Rear lot line to building face
build_to_zone
Minimum and maximum distance from front lot line within which front facade must be located
parking
Min spaces per Table 135-6.4-1; 0% required in DX, 60% of base in MX1/MX2, 100% of base elsewhere
far
du_ac

Capacity calculations

max_footprint_sf
lot_area_sf * lot_coverage_pct
max_impervious_sf
lot_area_sf * impervious_cover_pct
buildable_width_ft
lot_width_ft - setback_side_ft * 2
buildable_depth_ft
lot_depth_ft - setback_front_ft - setback_rear_ft
max_stories_via_building_type
per Ch. 135 §2.13-§2.16 House types or §2.3-§2.11 commercial/flat types; FAR not used

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.

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Floor area ratio
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Lot coverage
—%
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Setbacks (F / S / R)
— ft
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Parking
— /unit
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Max density
— du/ac
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Min lot size
— sf
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Sources & references

Primary source
Des Moines Municipal Code — Chapter 134 (Zoning) + Chapter 135 (Planning and Design)
current through Ord. 16,125 dated 2022-05-09 · retrieved 2026-05-20

library.municode.com returns SPA shell to scripted WebFetch. Bypass: Municode-hosted full-chapter PDFs at www.municode.com/webcontent/13242/Chapter-134-ZONING.pdf (4.4 MB) and Chapter-135-PLANNING%20AND%20DESIGN.pdf (37 MB), both 200 with Mozilla UA. Dimensional standards live in Ch. 135, NOT Ch. 134 — the 2019 PlanDSM rewrite split zoning into Ch. 134 (districts + uses + procedures) and Ch. 135 (building-type form standards). Each base district in Ch. 134 §2.2 cross-references one or more building types in Ch. 135 §2.3–2.16 where lot, setback, height, and coverage live. This is a true form-based-hybrid code per spec-02. EncodePlus mirror at online.encodeplus.com is the city's commissioned interactive viewer.

Secondary sources
Citations
  1. [1] §135-2.13.3
  2. [2] §135-2.13.3
  3. [3] §135-2.13.3
  4. [4] §135-2.13.3
  5. [5] §135-2.13.3.B
  6. [6] §135-2.13.3
  7. [7] §135 Table 135-6.4-1
  8. [8] §135-2.13.3
  9. [9] §135-2.13.3
  10. [10] §135-2.13.3
  11. [11] §135-2.13.3
  12. [12] §135-2.13.3.B
  13. [13] §135-2.13.3
  14. [14] §135 Table 135-6.4-1
  15. [15] §135-2.13.3
  16. [16] §135-2.13.3
  17. [17] §135-2.13.3
  18. [18] §135-2.13.3
  19. [19] §135-2.13.3.B
  20. [20] §135-2.13.3
  21. [21] §135 Table 135-6.4-1
  22. [22] §135-2.13.3
  23. [23] §135-2.13.3
  24. [24] §135-2.13.3
  25. [25] §135-2.13.3
  26. [26] §135-2.13.3.B
  27. [27] §135-2.13.3
  28. [28] §135 Table 135-6.4-1
  29. [29] §135-2.14.3
  30. [30] §135-2.14.3
  31. [31] §135-2.14.3
  32. [32] §135-2.14.3
  33. [33] §135-2.14.3.B
  34. [34] §135-2.14.3
  35. [35] §135 Table 135-6.4-1
  36. [36] §135-2.15.3
  37. [37] §135-2.15.3
  38. [38] §135-2.15.3
  39. [39] §135-2.15.3
  40. [40] §135-2.15.3.B
  41. [41] §135-2.15.3
  42. [42] §135 Table 135-6.4-1
  43. [43] §135-2.15.3
  44. [44] §135-2.15.3
  45. [45] §135-2.15.3
  46. [46] §135-2.15.3
  47. [47] §135-2.15.3.B
  48. [48] §135-2.15.3
  49. [49] §135 Table 135-6.4-1
  50. [50] §135-2.15.3
  51. [51] §135-2.15.3
  52. [52] §135-2.15.3
  53. [53] §135-2.15.3
  54. [54] §135-2.15.3.B
  55. [55] §135-2.15.3
  56. [56] §135 Table 135-6.4-1
  57. [57] §135-2.16.3
  58. [58] §135-2.16.3
  59. [59] §135-2.16.3
  60. [60] §135-2.16.3
  61. [61] §135-2.16.3.B
  62. [62] §135-2.16.3
  63. [63] §135 Table 135-6.4-1
  64. [64] §135-2.21
  65. [65] §135-2.21
  66. [66] §135-2.21
  67. [67] §135-2.21
  68. [68] §135-2.21
  69. [69] §135-2.21
  70. [70] §135 Table 135-6.4-1
  71. [71] §135-2.15.3
  72. [72] §135-2.15.3
  73. [73] §135-2.15.3
  74. [74] §135-2.15.3
  75. [75] §135-2.16.3.B
  76. [76] §135-2.15.3
  77. [77] §135 Table 135-6.4-1
  78. [78] §135-2.16.3
  79. [79] §135-2.16.3
  80. [80] §135-2.16.3
  81. [81] §135-2.16.3
  82. [82] §135-2.11.3.B
  83. [83] §135-2.16.3
  84. [84] §135 Table 135-6.4-1
  85. [85] §135-2.16.3
  86. [86] §135-2.16.3
  87. [87] §135-2.16.3
  88. [88] §135-2.16.3
  89. [89] §135-2.11.3.B
  90. [90] §135-2.16.3
  91. [91] §135 Table 135-6.4-1
  92. [92] §135-2.11.3
  93. [93] §135-2.11.3
  94. [94] §135-2.11.3
  95. [95] §135-2.11.3
  96. [96] §135-2.11.3.B
  97. [97] §135-2.11.3
  98. [98] §135 Table 135-6.4-1
  99. [99] §135-2.3.3
  100. [100] §135-2.3.3
  101. [101] §135-2.3.3
  102. [102] §135-2.3.3.B
  103. [103] §135-2.3.3
  104. [104] §135-6.4.1.A
  105. [105] §135-2.3.3
  106. [106] §135-2.3.3
  107. [107] §135-2.3.3
  108. [108] §135-2.3.3.B
  109. [109] §135-2.3.3
  110. [110] §135-6.4.1.A
  111. [111] §135-2.3.3
  112. [112] §135-2.3.3
  113. [113] §135-2.3.3
  114. [114] §135-2.11.3
  115. [115] §135-2.11.3.B
  116. [116] §135-2.3.3
  117. [117] §135-6.4.1.A
  118. [118] §135-2.5.3
  119. [119] §135-2.5.3
  120. [120] §135-2.5.3
  121. [121] §135-2.5.3.B
  122. [122] §135-2.5.3
  123. [123] §135-6.4.2.A
  124. [124] §135-2.5.3
  125. [125] §135-2.5.3
  126. [126] §135-2.5.3
  127. [127] §135-2.5.3.B
  128. [128] §135-2.5.3
  129. [129] §135-6.4.2.A
  130. [130] §135-2.7.3
  131. [131] §135-2.7.3
  132. [132] §135-2.7.3
  133. [133] §135-2.7.3.B
  134. [134] §135-2.7.3
  135. [135] §135-6.4.3
  136. [136] §135-2.11.3
  137. [137] §135-2.11.3
  138. [138] §135-2.11.3
  139. [139] §135-2.11.3
  140. [140] §135-2.11.3.B
  141. [141] §135-2.11.3
  142. [142] §135 Table 135-6.4-1
  143. [143] §135-2.11.3
  144. [144] §135-2.11.3
  145. [145] §135-2.11.3
  146. [146] §135-2.11.3
  147. [147] §135-2.11.3.B
  148. [148] §135-2.11.3
  149. [149] §135 Table 135-6.4-1
  150. [150] §135-2.7.3
  151. [151] §135-2.7.3
  152. [152] §135-2.7.3
  153. [153] §135-2.7.3.B
  154. [154] §135-2.7.3
  155. [155] §135-6.4.3
  156. [156] §135-2.7.3
  157. [157] §135-2.7.3
  158. [158] §135-2.9.3
  159. [159] §135-2.7.3.B
  160. [160] §135-2.7.3
  161. [161] §135-6.4.3
  162. [162] §135-2.9.3
  163. [163] §135-2.9.3
  164. [164] §135-2.9.3
  165. [165] §135-2.9.3.B
  166. [166] §135-2.9.3
  167. [167] §135 Table 135-6.4-1
  168. [168] §135-2.9.3
  169. [169] §135-2.9.3
  170. [170] §135-2.9.3
  171. [171] §135-2.9.3.B
  172. [172] §135-2.9.3
  173. [173] §135 Table 135-6.4-1
  174. [174] §135-2.10
  175. [175] §135-2.10
  176. [176] §135-2.10
  177. [177] §135-2.10
  178. [178] §135-2.10
  179. [179] §135-6.2.7
  180. [180] §135-2.7.3
  181. [181] §135-2.7.3
  182. [182] §135-2.7.3
  183. [183] §135-2.9.3.B
  184. [184] §135-2.7.3
  185. [185] §135-6.4.3
  186. [186] §135-2.13.3
  187. [187] §135-2.13.3
  188. [188] §135-2.13.3
  189. [189] §135-2.13.3
  190. [190] §135-2.13.3.B
  191. [191] §135-2.13.3
  192. [192] §135 Table 135-6.4-1
  193. [193] n§Ch. 50
  194. [194] n§Ch. 50
  195. [195] n§Ch. 50
  196. [196] n§Ch. 50
  197. [197] n§Ch. 50
  198. [198] n§Ch. 50
  199. [199] n§134-2.2.9
  200. [200] n§134-2.2.9
  201. [201] n§134-2.2.9
  202. [202] n§134-2.2.9
  203. [203] n§134-2.2.9
  204. [204] n§134-2.2.9

Research status

Publication gates

primary url presentpassedsource.primary_url = Municode (https://library.municode.com/ia/des_moines/codes/code_of_ordinances?nodeId=MUCO_CH134ZOOR), not aggregator
no aggregator citedpassedscan clean — only municode.com, encodeplus.com (city's commissioned mirror), plandsm.dsm.city (city domain); no Zoneomics/Steadily/SitePlanGuide/Propwire/Zonara/Unzoned
confidence tags full formpassedAll confirmed numeric district fields carry c§-form confidence (e.g. c§135-2.13.3) to Ch. 135 §2.3.3 / §2.4.3 / §2.5.3 / §2.7.3 / §2.9.3 / §2.11.3 / §2.13.3 / §2.14.3 / §2.15.3 / §2.16.3 + Table 135-6.4-1 for parking; partial fields carry p§-prefix
overlays have parameters trigger confidencepassedAll 5 overlays (Capitol Dominance DT, Sherman Hill HP, F-Flood FP, KDSM Airport AP, Historic-Local HP) carry name + code + type (uppercase enum) + params + trigger + ordinance + base_interaction + confidence
preempt section city specificpassed3 state preemptions (IA §414.1(2) STR; §414.28 manufactured housing; SF 592 ADU) with city-specific qualifying_condition_checked, qualifying_condition_source, effect, effective_date, source_ref, applies=true, status=applies

Known issues

platform:municode-spa-blockerschema:form-based-hybrid-cross-chapter-referencesfbc:dimensional-standards-live-in-chapter-135overlays:no-formal-overlay-districts-in-ch134

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