株式会社Polyuse
Tokyo, JP · 14 known investors
Polyuse is a Japanese company developing construction 3D printers and related technology and services for the construction industry.
Also known as Polyuse · ポリウス · 株式会社Polyuse
Founders & leadership
Investors · 14
Also in the syndicate · 10
Company profile
researched Aug 2026株式会社Polyuse (Polyuse) is a Tokyo-based construction technology company founded in June 2019 that plans, designs, manufactures and sells hardware, software and services specialized for the construction industry, centered on construction 3D printers. The company describes itself as developing construction 3D printer technology suited to Japanese construction sites, and positions itself as the only domestic manufacturer in Japan that develops the machines, software and materials in-house and also provides services and adoption support.
Polyuse's technology is applied mainly to civil-engineering concrete structures such as retaining walls, drainage structures and embedded formwork, printed either on site or at production facilities. In September 2025 the company began nationwide sales and installation of its domestically produced construction 3D printer "Polyuse One," with a plan to install 100 units across Japan during fiscal 2025-26. The company also works with universities and research institutions, including joint research with Kyoto University on real-time measurement and visualization of printing conditions, and has contributed to the drafting of technical guidelines for construction 3D printing with the Japan Society of Civil Engineers.
Headquarters are in Hamamatsucho, Minato-ku, Tokyo, with a development base in Kamakura, Kanagawa Prefecture. The company is led by co-representative directors Takuya Iwamoto and Wataru Ooka, and reports paid-in capital of 100 million yen.
Founding story
Established in June 2019 as a venture aiming to solve industry problems and improve efficiency using 3D printing and advanced technologies in the construction domain; the initial focus on villa construction shifted toward civil engineering after encountering strict building regulations, leading to development of a domestic 3D printer optimized for civil works.
Business model
Polyuse plans, designs, manufactures and sells construction-industry-specific hardware, software and services centered on construction 3D printers. It sells its "Polyuse One" printer to construction companies and precast manufacturers nationwide and provides service delivery and adoption support; the printer is also offered through rental via Nishio Rent All. Earlier work was conducted through joint demonstrations and partnerships with general contractors and regional construction firms.
Sales of construction 3D printer units (Polyuse One, launched September 2025, with pre-orders opened in September 2024) plus related services and implementation support; the company has also stated plans to extend products into a platform using accumulated construction data for construction management and planning.
Traction
First domestic on-site 3D printing in an MLIT-ordered public works project (Kochi, April 2022) and first use in an MLIT-jurisdiction project in January 2022; over 30 printing projects in FY2022; 53 projects at the time of NETIS registration in November 2023 with over 100 including in-progress work; more than 200 projects by September 2025; over 300 cumulative construction projects by June 2026. Polyuse One had roughly 20 units delivered and a backlog of more than 100 units as of December 2025.
Latest developments
In December 2025 Polyuse raised approximately 2.7 billion yen in a Series B led jointly by WiL and Globis Capital Partners, alongside a rental partnership with Nishio Rent All for Polyuse One. In March 2026 it carried out renovation work on the NTT Shinagawa TWINS security building with NTT Data and NTT Facilities using a construction 3D printer. In June 2026 cumulative printing projects passed 300, in July 2026 the company was selected for MLIT's SBIR construction technology R&D grant program for joint research with Kyoto University, and in August 2026 it announced 1.1 billion yen in financing from Mizuho Bank and the Shoko Chukin Bank, bringing cumulative funding to 5 billion yen.
▸Full profile — market position, technology, go-to-market, geography, history
Market position
Describes itself as Japan's only construction 3D printer maker that internally develops machines, software and materials while providing services and adoption support, and reports the largest number of construction 3D printing projects domestically according to the Japan Society of Civil Engineers Concrete Committee. Recognitions include selection for METI's J-Startup 2023, MLIT Infrastructure DX Award (Excellence Prize, FY2022), and the first domestic registration of construction 3D printing technology in MLIT's NETIS system.
Integrated in-house development of hardware, software and materials for construction 3D printing, optimized for Japanese civil-engineering sites and regulatory requirements, combined with accumulated construction and material data from public works projects and involvement in technical guideline development.
Technology
Construction 3D printing for concrete structures, with hardware, software and materials developed in-house. Systems support on-site printing at construction sites; a folding form factor was adopted to ease transport and relocation. Reported capabilities include automated nozzle movement printing a retaining wall in about 50 minutes. Development areas include printing accuracy and quality, diversification of printing methods, environmentally considerate concrete printing, large public structures, and joint research with Kyoto University on real-time measurement and visualization of printing state.
Go-to-market
Direct sales and pre-orders of the Polyuse One printer, rental distribution through Nishio Rent All, joint demonstrations and partnerships with contractors such as Maeda Corporation, Yoshimura Construction and Kato-gumi, participation in public programs (MLIT PRISM, NETIS registration, SBIR grant), academic and industry body engagement, and media, exhibition and seminar activity.
General contractors, regional construction companies and precast manufacturers, with work centered on public-sector civil engineering projects, including those ordered by Japan's Ministry of Land, Infrastructure, Transport and Tourism.
Geography
Japan-focused. Headquarters in Minato-ku, Tokyo, with a development base in Kamakura, Kanagawa. Demonstrations have been carried out in all 47 prefectures, with projects including Kochi, Kyoto and the Chugoku region.
History
Founded in June 2019 to apply 3D printing and advanced technology to the construction sector. The company initially explored villa construction before shifting to civil engineering after encountering building-code constraints. It began joint demonstration testing with Yoshimura Construction (Kyoto) in July 2020, partnered with Maeda Corporation in May 2021, and succeeded in Japan's first on-site construction of an actual civil structure using a construction 3D printer in June 2021. In 2022 it achieved the first domestic 3D-printed building with building confirmation approval and the first on-site printing in a public civil works project. Construction 3D printing was registered in MLIT's NETIS in November 2023, pre-orders for Polyuse One opened in September 2024, and full sales began in September 2025.
Compiled by commissioned research from 8 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Timeline · 24
launches, deals, and filingsAnnounced 1.1 billion yen in funding from Mizuho Bank and the Shoko Chukin Bank, bringing cumulative funds raised to 5 billion yen.
Selected for the Ministry of Land, Infrastructure, Transport and Tourism's SBIR construction technology research and development grant program for joint research with Kyoto University on real-time measurement and visualization of printing conditions.
NTT Data, NTT Facilities and Polyuse carried out renovation work on the NTT Shinagawa TWINS security building using a construction 3D printer to advance construction DX.
Raised about 2.7 billion yen in a Series B co-led by WiL and Globis Capital Partners with participation from Universal Materials Incubator, SBI Investment and Daiwa House Ventures, alongside bank lending, to expand R&D infrastructure and commercialization.
Nishio Rent All, a Nishio Holdings group company, started rental of the Polyuse One construction 3D printer.
Contributed to the establishment of technical guidelines for construction 3D printers based on more than 200 construction projects.
Started official nationwide sales and installation of the domestically produced construction 3D printer Polyuse One, with a plan for 100 installations in FY2025-26.
Announced that advance order sales for the domestically produced construction 3D printer Polyuse One would begin on 11 September 2024.
Construction 3D printing technology was registered for the first time in Japan in the Ministry of Land, Infrastructure, Transport and Tourism's New Technology Information System (NETIS).
Raised 710 million yen via third-party allotment from new investors Universal Materials Incubator, SBI Investment and Emellience Partners, and existing investors Coral Capital, Ikemori Venture Support and Yoshimura Construction, to fund R&D, production and supply capacity.
Representative Iwamoto was selected as one of the innovators under 35 in the MIT Technology Review Japan award.
Succeeded in Japan's first on-site printing in a public civil works project (National Route 24 Kawaramachi Jujo intersection utility conduit works, ordered by MLIT Kinki Regional Development Bureau).
Carried out Japan's first construction 3D printing in a project ordered by the Ministry of Land, Infrastructure, Transport and Tourism, in Kochi Prefecture.
Completed Japan's first building constructed by 3D printing that obtained building confirmation approval under the Building Standards Act.
Conducted a joint demonstration with Kato-gumi under the MLIT-led PRISM program, producing a drainage civil structure by 3D printing in the Chugoku region.
Announced Japan's first on-site construction of an in-use civil engineering structure using a construction 3D printer, with Maeda Corporation.
Polyuse and Maeda Corporation announced a tie-up in the construction 3D printer business to accelerate construction DX.
Polyuse announced an 80 million yen financing with Coral Capital as lead investor and participation from STRIVE, to accelerate construction 3D printer development.
Began joint demonstration testing of construction 3D printing with Kyoto-based Yoshimura Construction Industry.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
▸Research sources · 8
primary sources listed
- 株式会社Polyusepolyuse.xyz · web
8 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does 株式会社Polyuse do?
- Japanese construction-tech company developing domestically made construction 3D printers with in-house hardware, software and materials.
- Who founded 株式会社Polyuse?
- 株式会社Polyuse was founded by hayato isezaki.
- Who are 株式会社Polyuse's investors?
- 株式会社Polyuse's investors include Coral Capital, Globis Capital Partners, STRIVE, Universal Materials Incubator.
- Where is 株式会社Polyuse headquartered?
- 株式会社Polyuse is headquartered in Tokyo, JP.