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Building code adoption map

The model code edition each state has adopted, on a map and in a table.

Last checked

Edition year of the model code in each state’s own code. In a few states (see the table) that code applies only where a city or county adopts it. “–” means no statewide edition in our verified records (often a home-rule state, where cities adopt their own) or a state guide we have not published yet.

Editions and effective dates by state

StateResidential (IRC)Building (IBC)Energy, residentialElectrical (NEC)
Alabama20241 (December 14, 20261)–20241 (December 14, 20261)–
Alaska–20212 (October 28, 20222)–20202 (April 16, 20222)
Arizona––––
Arkansas20213 (January 1, 20233)20213 (January 1, 20233)20094 (January 1, 20154)20265 (September 3, 20265)
California20246 (January 1, 20267)20246 (January 1, 20267)–20236 (January 1, 20267)
Colorado–––20268 (August 1, 20268)
Connecticut20219 (October 1, 202210)20219 (October 1, 202210)20219 (October 1, 202210)20209 (October 1, 202210)
Delaware202411 (January 1, 202611) where adopted locally12202411 (January 1, 202611) where adopted locally12202413 (April 11, 202614)202315 (January 1, 202615)
District of Columbia201516 (May 29, 202017)201516 (May 29, 202017)201516 (May 29, 202017)201416 (May 29, 202017)
Florida202118 (December 31, 202319)202120 (December 31, 202319)202121 (December 31, 202319)–
Georgia––201522 (January 1, 202023)–
Hawaii201824 (November 17, 202024)201825 (April 20, 202125)201826 (December 15, 202026)–
Idaho201827 (July 1, 202427)201827 (July 1, 202427)201827 (July 1, 202427)202328 (April 4, 202528)
Illinois––202429 (November 30, 202529)–
Indiana201830 (December 26, 201930)201230 (December 1, 201430)–200830 (August 26, 200930)
Iowa––201231–
Kansas201832 (July 1, 202633) where adopted locally34200635 (February 4, 201135)–200835 (February 4, 201135)
Kentucky201536 (December 3, 202436)–200937202338
Louisiana202139 (January 1, 202339)202139 (January 1, 202339)202139 (July 1, 202339)202039 (January 1, 202339)
Maine202140202140202140202641 (July 1, 202641)
Maryland202142 (May 29, 202343)202142 (May 29, 202343)202142 (May 29, 202343)201744 where adopted locally45
Massachusetts202146 (October 11, 202446)–––
Michigan201547 (February 8, 202247)202147 (April 9, 202547)201547202347 (March 12, 202447)
Minnesota201848 (March 31, 202049)201850 (March 31, 202051)201252 (February 14, 201552)–
Mississippi––––
Missouri––––
Montana––––
Nebraska201853 where adopted locally53201853 where adopted locally53201854 (July 1, 202054)202355 (August 1, 202456)
Nevada––202457 (August 18, 202457)–
New Hampshire––201858202358
New Jersey202459 (August 17, 202660)202459 (August 17, 202660)202459 (August 17, 202660)202359 (August 17, 202660)
New Mexico202161 (July 14, 202361)202162 (July 14, 202362)202163 (January 30, 202463)202064 (March 28, 202364)
New York202465 (December 31, 202566)202465 (December 31, 202566)202465 (December 31, 202566)–
North Carolina201567 (January 1, 201967)201567 (January 1, 201967)201567 (January 1, 201967)202068 (November 1, 202168)
North Dakota202469 (January 1, 202670) where adopted locally71202469 (January 1, 202670) where adopted locally71202469 (January 1, 202670) where adopted locally71202672 (July 1, 202672)
Ohio201873 (July 1, 201974)202175 (March 1, 202476)201877 (July 1, 201974)202378 (April 15, 202478)
Oklahoma202479 (September 14, 202679)202480 (September 14, 202680)202479 (September 14, 202679)202381 (September 14, 202481)
Oregon–––202682 (October 1, 202682)
Pennsylvania202183 (January 1, 202683)202183 (January 1, 202683)202183 (January 1, 202683)–
Rhode Island202184 (December 1, 202584)202185 (December 1, 202585)202486202387 (December 1, 202587)
South Carolina202188 (January 1, 202389)202188 (January 1, 202389)200990202088 (January 1, 202389)
South Dakota202491 (July 1, 202692) where adopted locally91––202393 (November 12, 202494)
Tennessee201895 (July 16, 202095)202196 (April 17, 202596)201895 (July 16, 202095)201797 (October 1, 201897)
Texas201298201298201599 (September 1, 201699)2026100 (September 1, 2026100)
Utah20211012024101 (July 1, 2026102)2024101 (July 1, 2026102)2023101
Vermont–2021103 (November 4, 2025103)2015104 (July 14, 2026105)2023106 (November 5, 2025106)
Virginia2021107 (January 18, 2024108)2021107 (January 18, 2024108)2021107 (January 18, 2024108)2020107 (January 18, 2024108)
Washington2021109 (March 15, 2024109)2021109 (March 15, 2024109)–2023109 (April 1, 2024110)
West Virginia2018111 (August 1, 2022111) where adopted locally1122018111 (August 1, 2022111) where adopted locally1122015111 (August 1, 2022111) where adopted locally1122020111 (August 1, 2022111) where adopted locally112
Wisconsin–20211132009114 (January 1, 2016114)–
Wyoming–2024115 (June 28, 2024116)–2026116

Sources

  1. Chapter 465-X-10 Alabama Residential Building Code (Certification)State of Alabama, Home Builders Licensure Board (certified filing, Legislative Services Agency, Administrative Procedure Division)Adopted October 20, 2026Checked November 5, 2026
  2. 13 AAC 50 Codes and StandardsAlaska State Legislature (BASIS), Alaska Administrative CodeChecked November 5, 2026
  3. 2021 Arkansas Fire Prevention Code Rules ChangesArkansas Department of Public Safety, Division of Arkansas State Police, State Fire MarshalPosted April 27, 2022Checked November 5, 2026
  4. Arkansas Energy Code for New Building Construction Supplements and Amendments 2014Arkansas Economic Development Commission, Energy Office (hosted by Arkansas Division of Environmental Quality)Effective January 1, 2015Checked November 5, 2026
  5. 17 CAR § 210-601. Adoption of National Electrical CodeState of Arkansas, Code of Arkansas RulesEffective September 3, 2026Checked November 5, 2026
  6. Guide to Title 24, 6th EditionCalifornia Department of General Services, Building Standards CommissionPublished July 2025Checked November 7, 2026
  7. CodesCalifornia Department of General Services, Building Standards CommissionChecked November 5, 2026
  8. State Electrical Board Rules and RegulationsColorado Department of Regulatory Agencies, State Electrical BoardEffective September 22, 2026Checked November 7, 2026
  9. 2022 Connecticut State Building Code (w/ Errata #1)State of Connecticut, Department of Administrative Services, Office of the State Building InspectorEffective October 1, 2022Checked November 7, 2026
  10. Connecticut State Building Code - RegulationsState of Connecticut, Department of Administrative Services, Office of the State Building InspectorChecked November 5, 2026
  11. County Laws & CodeNew Castle County, DelawareChecked November 7, 2026
  12. 16 Del. C. ch. 76, County or Municipal Building, Plumbing, Electrical and Other CodesState of Delaware, Delaware Code OnlineChecked November 5, 2026
  13. 7 DE Admin. Code 2101, Regulations for State Energy Conservation CodeState of Delaware, Registrar of Regulations, Administrative CodePublished April 1, 2026Checked November 5, 2026
  14. Secretary's Order No. 2026-CCE-0002State of Delaware, Department of Natural Resources and Environmental ControlAdopted March 10, 2026Checked November 5, 2026
  15. 1 DE Admin. Code 701, Administration and Enforcement (State Fire Prevention Regulations)State of Delaware, Registrar of Regulations, Administrative CodeEffective January 1, 2026Checked November 5, 2026
  16. 12-A DCMR § 101 GeneralDistrict of Columbia, Office of Documents and Administrative Issuances (D.C. Municipal Regulations)Effective May 29, 2020Checked November 5, 2026
  17. DC Construction CodesDistrict of Columbia, Department of BuildingsChecked November 7, 2026
  18. Analysis of Changes for the 8th Edition (2023) Florida Codes: ResidentialState of Florida, Department of Business and Professional Regulation, Florida Building CommissionChecked November 7, 2026
  19. Florida Building Commission home page (BCIS)State of Florida, Department of Business and Professional Regulation, Florida Building CommissionChecked November 7, 2026
  20. Analysis of Changes for the 8th Edition (2023) Florida Building Code: BuildingState of Florida, Department of Business and Professional Regulation, Florida Building CommissionChecked November 7, 2026
  21. Significant Provision Changes in 8th Edition (2023) FBC, Energy ConservationState of Florida, Department of Business and Professional Regulation, Florida Building CommissionChecked November 7, 2026
  22. Current State Minimum Codes for ConstructionGeorgia Department of Community AffairsChecked November 5, 2026
  23. Georgia | Building Energy Codes ProgramU.S. Department of EnergyChecked November 5, 2026
  24. Hawaii State Residential CodeState of Hawaii, Department of Accounting and General Services, State Building Code CouncilAdopted November 17, 2020Checked November 5, 2026
  25. Hawaii State Building CodeState of Hawaii, Department of Accounting and General Services, State Building Code CouncilAdopted April 20, 2021Checked November 5, 2026
  26. Hawaii State Energy Code Amendments to the 2018 IECCState of Hawaii, Department of Accounting and General Services, State Building Code CouncilAdopted December 15, 2020Checked November 5, 2026
  27. IDAPA 24.39.30, Rules of Building Safety (Building Code Rules)State of Idaho, Idaho Administrative Code (IDAPA), Idaho Building Code BoardChecked November 7, 2026
  28. IDAPA 24.39.10, Rules of the Electrical BoardState of Idaho, Idaho Administrative Code (IDAPA), Idaho Electrical BoardChecked November 5, 2026
  29. Illinois Energy Conservation CodeState of Illinois, Capital Development BoardChecked November 5, 2026
  30. Rules of the Indiana Fire Prevention and Building Safety CommissionState of Indiana, Department of Homeland SecurityChecked November 5, 2026
  31. 481 IAC chapter 301, State Building CodeIowa Administrative Code, Inspections, Appeals, and Licensing Department[481]Published September 30, 2026Checked November 7, 2026
  32. 2026 Senate Bill No. 418 (enrolled), by-right housing development actKansas LegislatureAdopted April 7, 2026Checked November 7, 2026
  33. 2026 Composite Listing of New, Amended & Repealed Statutes (K.S.A. Order)Kansas Office of Revisor of StatutesPublished August 13, 2026Checked November 5, 2026
  34. K.S.A. 12-3009Kansas Office of Revisor of Statutes, Kansas Statutes AnnotatedEffective April 25, 1969Checked November 5, 2026
  35. K.A.R. 22-1-3, Adopted codes and standardsKansas Secretary of State, Kansas Administrative Regulations (State Fire Marshal)Revised February 4, 2011Checked November 5, 2026
  36. 815 KAR 7:125, Kentucky Residential CodeKentucky Legislative Research Commission, Kentucky Administrative RegulationsEffective December 3, 2024Checked November 6, 2026
  37. 2018 Kentucky Residential Code, Third EditionCommonwealth of Kentucky, Department of Housing, Buildings and ConstructionPublished August 2024Checked November 7, 2026
  38. Codes Currently Adopted by KentuckyCommonwealth of Kentucky, Department of Housing, Buildings and ConstructionChecked November 6, 2026
  39. State of Louisiana Uniform Construction CodeState of Louisiana, Louisiana Uniform Construction Code CommissionRevised August 6, 2026Checked November 5, 2026
  40. Ch. 2 MUBEC - Administrative ProceduresMaine Secretary of State, Agency Rules (08-003 C.M.R., Maine Office of Community Affairs, Building Codes and Standards)Revised July 22, 2026Checked November 7, 2026
  41. 02-318 C.M.R. Ch. 120: Electrical Installation StandardsMaine Department of Professional and Financial Regulation, Electricians’ Examining BoardEffective July 1, 2026Checked November 5, 2026
  42. COMAR 09.12.51, Maryland Building Performance StandardsMaryland Department of Labor, Division of Labor and Industry, Building Codes AdministrationEffective May 29, 2023Checked November 5, 2026
  43. Frequently Asked QuestionsMaryland Department of Labor, Division of Labor and Industry, Building Codes AdministrationChecked November 5, 2026
  44. Current Adopted Building-Related Codes in the State of MarylandMaryland Department of Labor, Division of Labor and Industry, Building Codes AdministrationLast updated March 18, 2026Checked November 5, 2026
  45. Md. Code, Public Safety § 12-603Maryland General Assembly, Annotated Code of MarylandChecked November 5, 2026
  46. Tenth Edition CMR 780Commonwealth of Massachusetts, Board of Building Regulations and StandardsPublished October 11, 2024Checked November 7, 2026
  47. Construction Codes Part 5. Residential Code (R 408.30500 to 408.30547g)State of Michigan, Michigan Office of Administrative Hearings and Rules, Michigan Administrative Code (Bureau of Construction Codes rules)Effective February 8, 2022Checked November 7, 2026
  48. Minn. R. 1309.0010 Adoption of International Residential CodeMinnesota Office of the Revisor of Statutes, Minnesota RulesPublished March 31, 2020Checked November 6, 2026
  49. Code book fact sheet: 2020 Minnesota Residential CodeMinnesota Department of Labor and IndustryChecked November 6, 2026
  50. Minn. R. 1305.0011 Adoption of International Building CodeMinnesota Office of the Revisor of Statutes, Minnesota RulesPublished March 31, 2020Checked November 6, 2026
  51. 2020 Minnesota State Building CodesMinnesota Department of Labor and IndustryChecked November 6, 2026
  52. Code book fact sheet: 2020 Minnesota Residential Energy CodeMinnesota Department of Labor and IndustryChecked November 6, 2026
  53. Building code updatedNebraska Legislature, Unicameral UpdatePosted April 11, 2019Checked November 6, 2026
  54. Energy CodesNebraska Department of Water, Energy, and EnvironmentChecked November 6, 2026
  55. State Electrical Act and State Electrical Board Rules, July 2026Nebraska State Electrical DivisionPublished July 2026Checked November 7, 2026
  56. State Act Update & 2023 Code AdoptionNebraska State Electrical DivisionPosted August 1, 2024Checked November 6, 2026
  57. State Adoption StatusNevada Governor's Office of EnergyLast updated July 24, 2025Checked November 6, 2026
  58. State Building Code | NH Division of Fire SafetyNew Hampshire Department of Safety, Division of Fire SafetyChecked November 5, 2026
  59. Current Construction CodesNJ Department of Community Affairs, Division of Codes and StandardsChecked November 6, 2026
  60. 58 NJR 8(2), Adopted Amendments N.J.A.C. 5:23-3.14 to 3.22NJ Department of Community Affairs, Division of Codes and StandardsEffective August 17, 2026Checked November 6, 2026
  61. 14.7.3 NMAC 2021 New Mexico Residential Building CodeNew Mexico Administrative Code (State Records Center and Archives)Effective July 14, 2023Checked November 6, 2026
  62. 14.7.2 NMAC 2021 New Mexico Commercial Building CodeNew Mexico Administrative Code (State Records Center and Archives)Effective July 14, 2023Checked November 6, 2026
  63. 14.7.6 NMAC 2021 New Mexico Residential Energy Conservation CodeNew Mexico Administrative Code (State Records Center and Archives)Effective January 30, 2024Checked November 6, 2026
  64. 14.10.4 NMAC 2020 New Mexico Electrical CodeNew Mexico Administrative Code (State Records Center and Archives)Effective March 28, 2023Checked November 6, 2026
  65. Division of Building Standards and Codes Frequently Asked QuestionsNew York Department of State, Division of Building Standards and CodesChecked November 6, 2026
  66. Notice of Adoption | Department of StateNew York Department of State, Division of Building Standards and CodesChecked November 6, 2026
  67. Codes - Current and Past | OSFMNorth Carolina Department of Insurance, Office of State Fire Marshal (OSFM), Engineering DivisionChecked November 6, 2026
  68. State Electrical Code and Interpretations | OSFMNorth Carolina Office of State Fire Marshal, State Electrical DivisionChecked November 6, 2026
  69. North Dakota State Building Code (effective January 1, 2026)North Dakota Department of Commerce, Division of Community ServicesEffective January 1, 2026Checked November 6, 2026
  70. Building Codes | Commerce | North DakotaNorth Dakota Department of Commerce, Division of Community ServicesChecked November 6, 2026
  71. N.D.C.C. Chapter 54-21.3 State Building CodeNorth Dakota Legislative BranchChecked November 6, 2026
  72. Laws, Rules, Wiring and Conveyance Standards of North DakotaNorth Dakota State Electrical BoardEffective July 1, 2026Checked November 6, 2026
  73. Amendments Group CVII (107) Proposed Residential Code of Ohio Rules, Public Hearing DraftState of Ohio, Department of Commerce, Board of Building StandardsPublished December 4, 2026Checked November 6, 2026
  74. OAC 4101:8-34-01 Electrical (RCO Chapter 34), effective 4/15/2024State of Ohio, Department of Commerce, Board of Building StandardsEffective April 15, 2024Checked November 6, 2026
  75. 2024 Ohio Building Code Rules (OAC 4101:1), effective March 1, 2024State of Ohio, Department of Commerce, Board of Building StandardsEffective March 1, 2024Checked November 7, 2026
  76. 2024 Ohio Building, Mechanical & Plumbing Code Rules | Ohio Department of CommerceState of Ohio, Department of Commerce, Board of Building StandardsChecked November 5, 2026
  77. Ohio Residential Energy Code Compliance Methods (July 2019)State of Ohio, Department of Commerce, Board of Building StandardsPublished July 2019Checked November 5, 2026
  78. 2019 Residential Code of Ohio Amendments | Ohio Department of CommerceState of Ohio, Department of Commerce, Board of Building StandardsLast updated April 1, 2024Checked November 5, 2026
  79. OAC Title 748, Chapter 20: IRC 2024 Permanent Rule (OUBCC unofficial copy)Oklahoma Uniform Building Code Commission (OUBCC)Effective September 14, 2026Checked November 6, 2026
  80. OAC Title 748, Chapter 20: IBC 2024 Permanent Rule (OUBCC unofficial copy)Oklahoma Uniform Building Code Commission (OUBCC)Effective September 14, 2026Checked November 6, 2026
  81. OAC Title 748, Chapter 20: NEC 2023 Permanent Rule (OUBCC unofficial copy)Oklahoma Uniform Building Code Commission (OUBCC)Effective September 14, 2024Checked November 6, 2026
  82. Oregon Electrical Specialty Code adoptionOregon Department of Consumer and Business Services, Building Codes DivisionChecked November 6, 2026
  83. 34 Pa. Code § 403.21. Uniform Construction Code.Pennsylvania Code & Bulletin (Legislative Reference Bureau), official full-text Pennsylvania CodeEffective January 1, 2026Checked November 6, 2026
  84. RISBC-2 Rhode Island State One and Two Family DwellingsState of Rhode Island, Department of State (Rhode Island Code of Regulations), Building Code Commission / Building Code Standards CommitteeEffective December 1, 2025Checked November 6, 2026
  85. RISBC-1 Rhode Island Building CodeState of Rhode Island, Department of State (Rhode Island Code of Regulations), Building Code Commission / Building Code Standards CommitteeEffective December 1, 2025Checked November 7, 2026
  86. RISBC-8 Rhode Island Energy Conservation CodeState of Rhode Island, Department of State (Rhode Island Code of Regulations), Building Code Commission / Building Code Standards CommitteeEffective December 1, 2025Checked November 6, 2026
  87. RISBC-5 Rhode Island Electrical CodeState of Rhode Island, Department of State (Rhode Island Code of Regulations), Building Code Commission / Building Code Standards CommitteeEffective December 1, 2025Checked November 6, 2026
  88. S.C. Code of Regulations, Chapter 8: Building Codes CouncilSouth Carolina General Assembly, Legislative Council (Code of Regulations)Checked November 6, 2026
  89. Adopted Building CodesCity of Aiken, SCChecked November 6, 2026
  90. South Carolina Code of Laws, Title 6, Chapter 10: Energy Standard ActSouth Carolina General Assembly, Legislative Services AgencyChecked November 6, 2026
  91. SDCL 11-10-12South Dakota Legislature, Legislative Research CouncilChecked November 5, 2026
  92. SDCL 2-14-16South Dakota Legislature, Legislative Research CouncilChecked November 5, 2026
  93. ARSD 20:44:14:01South Dakota Legislature, Legislative Research CouncilChecked November 5, 2026
  94. South Dakota Electrical CommissionSouth Dakota Department of Labor & Regulation, South Dakota Electrical CommissionChecked November 5, 2026
  95. Rules, Chapter 0780-02-23 One and Two Family Dwellings and TownhousesTennessee Secretary of State, Division of PublicationsRevised September 2026Checked November 7, 2026
  96. Rules, Chapter 0780-02-02 Codes and StandardsTennessee Secretary of State, Division of PublicationsRevised April 2025Checked November 7, 2026
  97. Rules, Chapter 0780-02-01 Electrical InstallationsTennessee Secretary of State, Division of PublicationsRevised July 2025Checked November 7, 2026
  98. Local Government Code Chapter 214. Municipal Regulation of Housing and Other StructuresTexas Legislative Council, Texas Constitution and Statutes (statutes.capitol.texas.gov)Effective January 1, 2022Checked November 7, 2026
  99. Single-Family ConstructionTexas Comptroller of Public Accounts, State Energy Conservation Office (SECO)Checked November 6, 2026
  100. Commission Adopts Rules (Electricians, 16 TAC §73.100)Texas Department of Licensing and Regulation (TDLR)Posted September 1, 2026Checked November 6, 2026
  101. Utah Code 15A-2-103, Specific editions adopted of construction code of a nationally recognized code authorityState of Utah, Utah State Legislature (Utah Code)Effective July 1, 2026Checked November 6, 2026
  102. H.B. 65 Construction Code Amendments, 2026 General Session, Enrolled CopyState of Utah, Utah State Legislature (Utah Code)Published 2026Checked November 6, 2026
  103. Vermont Fire & Building Safety Code 2025Vermont Department of Public Safety, Division of Fire Safety (rule PDF)Effective November 4, 2025Checked November 7, 2026
  104. Adopted Rule Filing: Vermont Residential Building Energy Standards (RBES) AmendmentsVermont Department of Public Service (adopted rule filing)Adopted April 10, 2026Checked November 6, 2026
  105. Residential Building Energy Standards | Department of Public ServiceVermont Department of Public ServiceChecked November 6, 2026
  106. Vermont Electrical Safety Rules 2025Vermont Electricians' Licensing Board and Department of Public Safety, Division of Fire Safety (rule PDF)Effective November 5, 2025Checked November 7, 2026
  107. 13VAC5-63-10. Section 101 GeneralCommonwealth of Virginia, Division of Legislative Automated Systems (Virginia Administrative Code)Effective January 18, 2024Checked November 7, 2026
  108. Codes | DHCDVirginia Department of Housing and Community Development (DHCD)Checked November 7, 2026
  109. WAC 51-51-003 International Residential CodeWashington State Legislature, Washington Administrative Code (State Building Code Council rules)Effective March 16, 2024Checked November 6, 2026
  110. WSR 24-05-085 Permanent Rules, Department of Labor and IndustriesWashington State Legislature, Office of the Code Reviser (Washington State Register)Published February 21, 2024Checked November 6, 2026
  111. 87 CSR 4 State Building Code (Final File, effective 8/1/2022)West Virginia State Fire Commission (rule filed with the West Virginia Secretary of State)Effective August 1, 2022Checked November 6, 2026
  112. W. Va. Code §7-1-3n Authority of certain counties as to building and housing codes; state building codeWest Virginia LegislatureChecked November 6, 2026
  113. Division of Industry Services Quarterly Newsletter, Fall 2025Wisconsin Department of Safety and Professional Services, Division of Industry ServicesPublished 2025Checked November 6, 2026
  114. UDC (Uniform Dwelling Code / One- and Two- Family Dwellings) - DSPSWisconsin Department of Safety and Professional Services, Division of Industry ServicesChecked November 6, 2026
  115. Council on Fire Prevention and Electrical Safety in Buildings Rules, Chapter 1 General ProvisionsWyoming Council on Fire Prevention and Electrical Safety in BuildingsChecked November 6, 2026
  116. Rules and StatutesWyoming Department of Fire Prevention and Electrical Safety (State Fire Marshal)Checked November 6, 2026