Using Off-Site Construction to Close the Affordable Housing Gap
Date Posted: January 22, 2026
Posted In: Featured, What we are thinking about, White Papers,
From Harvard University Joint Center for Housing Studies: As the number of cost-burdened households swells and the price per unit of constructing new housing balloons across the US, off-site construction offers community-based organizations (CBOs) a compelling way to build high-quality and often well-designed affordable housing in less time and at a reduced cost.
A new paper summarizing research I did as a 2024 Gramlich Fellow in Community and Economic Development examines the experiences of six CBOs that have used off-site construction to create new affordable housing ranging from single-room occupancy units for formerly unhoused residents to single-family for-sale homes on community land trust plots. Drawing on conversations with developers, researchers, government officials, architects, manufacturers, and residents, I review key outcomes—total development costs, construction timelines, and design quality—as well as factors that contributed to them, including team coordination, relationships with government officials, and design decision-making processes.
Tailor Buildings to Neighborhoods
For most of the developments, the application of off-site construction techniques over conventional methods minimized construction timelines, lowered overall costs, or both. Contrary to common perceptions that factory-built housing is inherently uniform in its design and detailing and that such inflexibility limits the contexts for which it is architecturally suitable, the projects featured in the paper exhibit a surprisingly broad array of stylistic and formal attributes. In several cases, this adaptability enabled architects and developers to tailor buildings to the neighborhoods in which they are sited.
Panelized homes designed for narrow lots in Duluth, Minnesota, mirror some existing residential architecture. Photo: Aaron Smithson.
Important Strategies for Implementation
However, the financial and time savings associated with off-site construction are not guaranteed. Rather, stakeholders underscored important strategies to make this method work. Most notably, I found that leaders of CBOs interested in using off-site construction to create new affordable housing should:
- Understand how off-site construction might help a CBO advance its mission. Off-site construction presents many advantages over conventional building methods for organizations that aim to meet urgent affordable housing needs, minimize broader environmental impacts, and maintain strong relationships with their communities. Reflecting on how the potential benefits of modular or manufactured housing align with CBO goals is a vital first step in developing an effective implementation strategy.
- Be deliberate about where and how to implement different forms of off-site construction. Examining a project’s architectural context, the available manufacturers in the region, the logistical complexity of transporting and assembling components on-site, and the local regulatory environment for both modular and manufactured housing are critical steps in realizing cost and time savings. No single approach to off-site construction is right for all infill sites.