Promise Robotics Lands D.R. Horton as First U.S. Customer and Plans a Phoenix Factory

Promise Robotics, the Toronto-based construction technology company that runs robotic home-component factories in Calgary and Edmonton, has signed its first customer in the United States, BetaKit reported. D.R. Horton, the largest American homebuilder by volume, will use the startup’s “factory-as-a-service” model under a multi-year agreement to support production of more than 1,250 homes, most of them single-storey, single-family houses for buyers in the Phoenix, Arizona area.

To serve the contract, Promise plans a 16,000-square-foot factory in Phoenix, its third after the two Alberta plants and its first outside Canada. The company expects it to start manufacturing in early 2027. Chief executive Ramtin Attar, an Autodesk alumnus, told BetaKit that a deal of this kind “requires quite a bit of trust,” and recalled an investor telling him that a team able to build through a Calgary frost should find Phoenix simple.

Promise describes its product as physical AI rather than a single robot. Its software reads existing house designs, generates production plans and robot instructions, coordinates the factory floor and links output to installation on site. The company fits off-the-shelf industrial arms with its own tooling. Attar told The Robot Report that each home produces about 300 new images and 5,000 tactile data points, and that the system had to adjust to Arizona codes, which call for roughly half the sheathing used on Canadian walls.

What it means in practice

For Canadian AI, the deal tests whether homegrown physical-AI companies can scale into the far larger U.S. market without leaving their home base. It follows other Ontario bets on machines that learn in the real world, such as Waabi’s $1 billion raise for autonomous vehicles, and federal efforts to push adoption through programmes like the Regional AI Initiative, now expanded to $700 million.

Promise says it has completed more than 200 builds in Canada for developers including Brookfield, Hopewell and Mattamy, and is contracted for just over 2,500 homes across several builders. The 80-person company currently produces walls, floors, stairs and roof parts, and aims to add heating and ventilation, plumbing, drywall and insulation over time while growing to 100 staff by the end of 2026.

What to watch: whether the Phoenix plant opens on schedule, how much engineering and software work stays in Alberta and Ontario as U.S. volume grows, and whether Canadian builders facing their own labour shortages sign similar multi-year contracts.