Maine's legislature failed to pass a bill that would have resolved a building-code discrepancy for multifamily modular housing, leaving close to 300 housing units in limbo and raising concerns about regulatory obstacles facing offsite construction nationwide. The measure, known as LD 2229, died in committee in early April 2026 after a brief work session with minimal public discussion, according to the Portland Press Herald. The bill's defeat threatens to chill investment in modular housing in a state facing an acute housing shortage and exposes a patchwork of code and inspection conflicts that developers in other states are watching closely.
Background
The root of the problem is a split in Maine statute. Single- and two-family modular buildings fall under the Maine Manufactured Housing Board, which requires only company-level licensure and allows inspections to be completed in the factory. Buildings with three or more units, however, are governed by the Maine Uniform Building and Energy Code, which requires individual workers installing electrical and plumbing systems to be licensed in Maine and mandates on-site inspections by a local code enforcement officer.
That discrepancy went unnoticed for years as few large multifamily modular projects were attempted. It surfaced when a Portland city employee reviewing the Maine Cooperative Development Partners' Dougherty Commons project refused to accept factory inspections, according to the Bangor Daily News. A December 2025 report from the Legislature's Housing Production Innovation Working Group identified the need for a fix and concluded that Maine could replicate regulatory approaches used in states with established offsite construction industries.
Maine is the only state in the Northeast - and one of very few nationally - that requires a specific license for the installation and sale of modular homes, according to the Press Herald. That requirement adds friction not present in conventional site-built construction of comparable scale.
Details
The Legislature allocated approximately $900,000 in the governor's supplemental budget to help five multifamily modular projects already in development navigate the existing regulatory framework, according to Mainebiz. MaineHousing, which received the funding as part of its $37.5 million FY 2026-27 budget, said it will develop a process in the coming weeks to facilitate those pending projects, spokesman Scott Thistle told the outlet.
The cost implications are significant. According to an estimate from Backyard ADUs, which worked on the Dougherty Commons project, using Maine-licensed tradespeople in the factory adds an estimated $3,000 per module, translating to cost increases ranging from $24,000 to $468,000 per project.
Kara Wilbur, president of Rumford-based modular housing company Dooryard, told Mainebiz she has already retooled upcoming multifamily projects in Yarmouth and Madison for conventional ground-up construction. The Maine Association of General Contractors opposed the bill, arguing it proposed changes too quickly. Executive director Kelly Flagg said the delay offers an opportunity to bring stakeholders together for a more balanced approach.
The situation carries implications beyond Maine. Modular construction accounts for just 3% of new home construction in the United States, compared with 15% to 80% in Europe and Japan, according to U.S. Census Bureau data cited in the working group's report. Nationally, 39 states operate state-specific modular certification programs, each with different requirements for factory inspections, third-party oversight, and cross-state reciprocity - a fragmentation that limits the economies of scale factory-built housing needs to compete with traditional construction.
Outlook
Greg Payne, senior advisor on housing policy for the Governor's Office for Policy Innovation and the Future, told Mainebiz he expects the bill to be reconsidered in the 2027 legislative session, though it would likely not take effect until fall of that year unless passed as emergency legislation. At the federal level, a March 2026 executive order directed agencies to re-examine restrictions on manufactured or modular housing based on construction method rather than objective safety standards, and the bipartisan 21st Century ROAD to Housing Act includes a provision directing HUD to review barriers to modular housing financing. Whether those federal signals translate into state-level action will determine how quickly the regulatory environment catches up with an industry that developers say can deliver housing faster - if codes allow it.
