America's largest homebuilder is turning to robots to help solve metro Phoenix's housing math. D.R. Horton has signed a multi-year deal with Toronto-based Promise Robotics to manufacture more than 1,250 largely single-story, single-family homes in the Phoenix area, using robotically fabricated timber panels assembled at a new local factory before being trucked to home sites.
The agreement, announced Tuesday by Promise Robotics and reported Wednesday by AZ Big Media, makes D.R. Horton the first major U.S. homebuilder to tap into Promise Robotics' so-called Factory-as-a-Service model. Under the arrangement, Promise Robotics will operate the Phoenix manufacturing plant and manage the logistics of getting finished panels to building sites, while D.R. Horton supplies the home designs, according to BetaKit. The Phoenix facility will be Promise Robotics' third automated plant, following two existing hubs in Calgary and Edmonton, Alberta, and its physical AI software is designed to automatically adjust panel fabrication for Arizona building codes — requiring 50% less sheeting and alternate structural bracing compared with the cold-climate homes the company builds in Canada, per a report from The Robot Report.
Promise Robotics CEO and co-founder Ramtin Attar framed the expansion as a bet on the sheer size of the American market. AZ Big Media's report quotes Attar saying physical AI creates a production model that can expand homebuilding capacity within and across markets, and that the company aims to make its capabilities accessible to builders across North America to support the industry's long-term growth. The United States, per the same coverage, represents the largest market opportunity for applying Promise Robotics' model at scale.
Why D.R. Horton Is Looking to Automation
D.R. Horton's senior vice president of strategic growth and innovation, Brad Conlon, said the builder is looking to improve cycle times, increase production capacity, and bring greater consistency and predictability to its operations — and that Promise Robotics' integrated platform gives the company a new capability to support those goals, according to the AZ Big Media report. The Factory-as-a-Service model lets builders translate existing home designs into coordinated production spanning robotic manufacturing, factory operations, and onsite installation, without the capital expense of building and running their own factories.
The push toward automation comes as homebuilders nationally face persistent housing demand, labor shortages, rising costs, and pressure to increase output, per the same report. Those pressures are especially acute in Arizona, where the construction sector faces a projected shortfall of more than 195,000 vacant positions by late 2026, worsened by 41% of the existing workforce approaching retirement by 2031 and intense competition for tradespeople from mega-projects like TSMC's Phoenix chip plants, according to the Greater Phoenix Chamber Foundation.
A Deep Hole in Arizona's Housing Supply
The scale of the shortage Arizona is trying to build its way out of is stark. The state faced an immediate short-term housing deficit of 55,992 units in 2025 — up 5.1% from 2024 — on top of a cumulative long-term structural deficit of 110,837 homes statewide, according to a May report from the Common Sense Institute Arizona. The City of Phoenix's own Housing Phoenix Plan targets creating or preserving 50,000 housing units by 2030, even as independent municipal data from CommunityScale estimates the city actually needs 84,900 additional units over five years to meet demand.
Complicating the picture further, Phoenix-area homebuilding can fluctuate with market conditions. Whether robotic build speeds can offset cyclical pullbacks, alongside broader headwinds like interest rates, remains an open question for the industry.
Any factory-built housing produced for the Phoenix market will still need to clear state regulatory hurdles. Prefabricated and offsite home manufacturing in Arizona is overseen by the Arizona Department of Housing's Manufactured Housing Division, which requires factory-built building licenses such as M-9A certification along with state-inspected plans and foundation permits.
D.R. Horton's Broader Phoenix Footprint
The Promise Robotics partnership adds to a string of recent moves by D.R. Horton to deepen its presence across metro Phoenix. The builder closed 84,863 homes across 36 states and 126 markets in fiscal year 2025, maintaining its standing as the nation's largest homebuilder by volume every year since 2002, a distinction Hoodline has previously reported. In September, the company expanded its local land holdings by purchasing the final 232 home sites at Lucero Village in Goodyear's Estrella community for $32.7 million, or about $141,000 per lot, using its land-banking partner Hearthstone, as Hoodline reported at the time.
The acquisition adds to D.R. Horton's local land holdings. D.R. Horton has also been active in the Phoenix market. Promise Robotics is expanding from two Alberta factories into the Phoenix market.
