🏗️ Open Building Codes

What building code does Massachusetts use?

Massachusetts currently enforces Massachusetts amendments to the International Building Code, 2021 edition (statewide 2023 code cycle). Cities and counties in Massachusetts may adopt local amendments.

Adopted codes — 2023 cycle

ScopeCodeEdition
BuildingMassachusetts amendments to the International Building Code2021
ResidentialMassachusetts amendments to the International Residential Code2021
MechanicalMassachusetts amendments to the International Mechanical Code2021
PlumbingMassachusetts Plumbing Code (248 CMR)2023
EnergyMassachusetts amendments to the International Energy Conservation Code2021
Existing BuildingMassachusetts amendments to the International Existing Building Code2021
Pool & SpaInternational Swimming Pool and Spa Code2021
General ProvisionsMassachusetts State Building Code — General Provisions (780 CMR)2023

Other active cycles

Massachusetts lists more than one active cycle with ICC — projects may be permitted under either depending on submission date and local adoption.

2015 cycle (also active)

ScopeCodeEdition
BuildingInternational Building Code2015
ResidentialInternational Residential Code2015
FireInternational Fire Code2015
MechanicalInternational Mechanical Code2015
PlumbingInternational Plumbing Code2015
EnergyInternational Energy Conservation Code2015
Existing BuildingInternational Existing Building Code2015
Fuel GasInternational Fuel Gas Code2015
Property MaintenanceInternational Property Maintenance Code2015
Private SewageInternational Private Sewage Disposal Code2015
Pool & SpaInternational Swimming Pool and Spa Code2015
ZoningInternational Zoning Code2015

Get this data as JSON

curl https://codes.submittal.app/api/v1/states/massachusetts.json

Every page on this site is backed by the open building-codes dataset (CC BY 4.0). Source: ICC code-adoption records, retrieved 2026-04-28.