One Building
One Building is a Japanese construction technology company that develops BIM-based cloud software for building energy compliance, ZEB design, and lifecycle management, serving architects, general contractors, building material manufacturers, and property managers across Japan.
- Company typePrivate
- Founded2021
- HeadquartersMeguro, Japan
- Headcount—
- GTM typeB2B
- OfferingSoftware
What One Building does
One Building (株式会社one building) is a Japanese construction technology company founded in June 2021 in Meguro, Tokyo, with registered capital of 1 million JPY. The firm operates as a bootstrapped private corporation led by Representative Director Kaneda Masato (金田真聡) and has no disclosed external funding, parent company, or institutional investor backing. The company targets Japan's building sector sustainability problem — buildings account for 36% of global final energy consumption and 39% of CO2 emissions per the 2020 Global Status Report for Buildings and Construction — by digitizing energy performance workflows around BIM (Building Information Modeling).
The company's core product is the BIM sustaina platform, a cloud service that integrates architectural BIM data from Archicad and Revit with Japan's energy performance compliance engines. The suite includes BIM sustaina for Energy (supporting both the Model Building Method for compliance applications and the Standard Input Method for ZEB/Zero Energy Building design), BIM sustaina for Lifecycle (building lifecycle cost and asset management with IoT monitoring), the free 省エネ検討WEBサービス (Energy-Saving Web Service), and a 2026-launched AI-powered Energy-Saving Design Advice Report feature built on Google Cloud Gemini API. The company serves four primary customer segments: architectural design firms and general contractors, building material manufacturers and logistics providers, property management companies and real estate owners, and energy calculation outsourcing companies.
One Building's business model is freemium-led with a paid ZEB-tier subscription. The Model Building Method service and web service are free with unlimited projects and calculations. The Standard Input Method / ZEB tier uses monthly subscription billing based on project floor area, with prices ranging from 11,000 yen/project/month (1–1,000 m²) to 55,000 yen/project/month (50,001 m²+). Revenue also derives from BIM implementation consulting and energy calculation outsourcing services. The company has been designated as subsidized software under Japan's Building GX/DX Promotion Project, and maintains a partner ecosystem spanning YKK AP, Takashima, Toto, LIXIL, ABK SS, Otsuka Shokai, and the Japanese Association of Architectural Firms. Operations are restricted to users within Japan.
One Building firmographics
Firmographics- Name
- One Building
- Legal name
- 株式会社one building
- Website
- https://one-building.co.jp
- Company type
- Private
- Founded year
- 2021
- Operating status
- Operating
- Short description
- One Building is a Japanese construction technology company that develops BIM-based cloud software for building energy compliance, ZEB design, and lifecycle management, serving architects, general contractors, building material manufacturers, and property managers across Japan.
- Ownership category
- akta.pro rank
One Building industry classification
Industry- Product category
- Construction Technology Software
- NAICS
- Architectural Services (541310), Engineering Services (541330), Architectural, Engineering, and Related Services (5413)
- SIC
- Services-Computer Programming Services (7371), Services-Computer Integrated Systems Design (7373)
- akta.pro primary industry
- Building Information Modeling (BIM) & Digital Design Services (BPAHAKAK)
- akta.pro secondary industries
- Architecture, Construction & Building Codes Reference (Design, BIM, Safety Codes) (EDAGAGAH), Asset Performance & Reliability Management (APM/RBI/RCM) (EUAEAMAK)
Keywords
Where One Building is headquartered
LocationHeadquarters
- HQ city
- Meguro
- HQ country
- Japan
- HQ region
- Asia
Offices1 record
Markets served
One Building business model
Business model- GTM type
- B2B
- Offering type
- Software
Revenue model
- BIM sustaina for Energy Subscription (Standard Input Method): Monthly subscription billing based on building floor area (project-based pricing). Follows project-based billing rules with month-end aggregation and invoicing in the following month.
- Free Tier (WEB Service & Model Building Method): Free access to web-based energy calculation service and BIM-based Model Building Method service with unlimited projects and calculations. Used as freemium entry point for customer acquisition.
- Professional Services (Energy Calculation Outsourcing): Energy calculation outsourcing and consulting services for companies lacking internal capacity or facing tight deadlines. Offered as one-time project-based service.
- BIM Implementation Consulting: Consulting services for BIM adoption, including government subsidy programs, guided implementation support, and BIM model creation for ZEB projects.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Free | Free web service for preliminary energy analysis |
| Freemium | Free | BIM-based Model Building Method service - free tier |
| Subscription | Monthly | BIM sustaina for Energy (Standard Input Method) - ZEB tier |
Go-to-market motion4 records
Distribution channels4 records
Marketing channels5 records
One Building product offering
Product offeringCore offering
One Building develops and sells cloud-based BIM (Building Information Modeling) software for Japan's architecture and construction industry. Its core platform, BIM sustaina for Energy, supports energy performance calculations for Japan's Model Building Method and Standard Input Method compliance, enables ZEB (Zero Energy Building) planning, and includes AI-powered design advice reports. The company also offers BIM sustaina for Lifecycle for property/asset management, a free web-based energy calculation service, and implementation consulting.
Product overview
One Building offers a suite of cloud-based BIM sustainability services centered around the 'BIM sustaina' platform. The core offerings include BIM sustaina for Energy (ZEB and energy-saving design support with Model Building Method and Standard Input Method), BIM sustaina for Lifecycle (building lifecycle value and environmental performance evaluation), and a free 省エネ検討WEBサービス (Energy-saving Web Service) for basic energy calculations. The BIM sustaina for Energy product includes AI-powered features such as the 省エネ設計アドバイスレポート (Energy-Saving Design Advice Report) powered by Google Cloud Gemini API.
Differentiator
Problem solved
Functional benefit
Brands
- BIM sustaina for Energy: Cloud-based ZEB and energy-efficient design support service for architects and general contractors, enabling LCA (Life Cycle Assessment) from planning stages.
- BIM sustaina for Energy Sync
- BIM sustaina for Lifecycle
- 省エネ検討WEBサービス
Products and services
- BIM sustaina for Energy
Quantifiable outcome
- Supports LCA (Life Cycle Assessment) from planning stage, enabling both embodied carbon and operational carbon reduction
- +2 more outcomes
Companies that use One Building
Customer profileNamed customers4 records
Segments4 records
Ideal customer profiles3 records
One Building technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration3 records
AI capability4 records
Feature5 records
One Building partnerships and signals
Strategic signalPartnerships
Eight partnerships are on record, tiered core and minor.
- YKK APcoreBuilding material manufacturer partnership for energy-saving window and insulation product integration. Partner logo displayed on 省エネ検討WEBサービス (Energy-Saving Web Service) section of partner page, indicating collaborative product development and market co-promotion.
- Takashima (タキashima)coreBuilding material manufacturer partnership. Partner logo displayed on 省エネ検討WEBサービス section, suggesting product integration and joint go-to-market for energy-efficient building materials.
- Toto ( Tucoホームズ)coreBuilding/lifestyle industry association partnership. Partner logo displayed on BIM sustaina for Energy section. Indicates technology integration and market collaboration in sustainable building solutions.
- LIXIL (リクシル)coreBuilding/lifestyle industry association partnership. Partner logo displayed on BIM sustaina for Energy section, indicating strategic collaboration in sustainable building product ecosystem.
- ABK SS (ABK-SS)coreBuilding/lifestyle industry association partnership. Partner logo displayed on BIM sustaina for Energy section, representing collaboration within building/lifestyle industry ecosystem.
- Otsuka Shokai (オオツカイショクカイ)coreBuilding/lifestyle industry distributor. Partner logo displayed on BIM sustaina for Energy section, indicating distribution and reseller relationship for software promotion.
- Japanese Association of Architectural Firms (建築士技術者協会)minorIndustry association partnership for webinar co-hosting and marketing. Hosted joint webinar on ZEB and energy-efficient design with member participation open to non-members.
- Google Cloud (Gemini API)coreTechnology partnership for AI capabilities. BIM sustaina for Energy uses Google Cloud's Gemini API for OCR processing and data extraction in the Energy-Saving Design Advice Report feature (free option).
Scale indicators3 records
Recent moves6 records
Expansion highlights5 records
One Building competitors and assessment
Company assessmentBroad incumbents
- Graphisoft (Archicad): Graphisoft's Archicad is the other primary BIM platform integrated by One Building's add-on. As a broad incumbent in architectural BIM with growing sustainability features, Graphisoft is a comparable platform in workflow position and a potential long-term competitor.
- Trimble: Trimble's construction technology portfolio (Tekla, SketchUp, Sefaira, Viewpoint) covers BIM authoring, structural, energy analysis, and project management. Broad incumbent comparable to the integrated BIM-to-energy workflow One Building pursues, with significantly greater scale.
- Nemetschek Group: Nemetschek's Bluebeam, Solibri, and Graphisoft portfolio spans BIM, structural, and construction workflows with growing sustainability/ESG analytics investments. Broad incumbent comparable in serving the same AEC digital workflow One Building addresses.
- Autodesk (Revit / Insight): Revit is the leading global BIM authoring platform to which BIM sustaina for Energy integrates as an add-on; Autodesk's Insight and Forma products increasingly embed energy analysis natively. As a broad incumbent, Autodesk represents both a critical integration partner and a long-term competitive threat.
Direct peers
- DesignBuilder Software: DesignBuilder offers EnergyPlus-based building energy simulation software widely used by architects and engineers for early-stage performance analysis and ZEB design. Comparable to BIM sustaina for Energy's ZEB design and energy calculation use case, with similar workflow orientation toward design-stage energy modeling.
- Sefaira (Trimble): Sefaira, now part of Trimble, offers real-time energy and daylighting analysis plugins for SketchUp and Revit used by architects for early-stage ZEB design. Directly comparable functionality to BIM sustaina for Energy's design-stage performance visualization use case.
- Integrated Environmental Solutions (IES): IES provides the Virtual Environment energy simulation platform used for ZEB/energy performance analysis and compliance globally. It is directly comparable to BIM sustaina for Energy's energy calculation and ZEB design functionality, though it lacks One Building's tight BIM authoring plugin integration.
- Fukui Computer Architect (福井コンピュータアーキテクト): Japanese architectural CAD/BIM software vendor (ARCHITREND, GLOOBE) serving the same Japanese architecture firm and general contractor customer base. Direct peer in domestic BIM tools, with overlapping target segments and competing for the same workflow integration with energy compliance.
Others
- Otsuka Corporation (大塚商会): Major Japanese IT solutions distributor listed as a One Building distribution partner for software promotion. It is adjacent rather than competitive — relevant as a channel peer for understanding how construction tech reaches Japanese SMB customers.
Emerging players
- cove.tool: cove.tool provides building performance analysis and optimization for architects and developers, with comparable ZEB/energy-focused workflows. As an emerging player with similar design-stage positioning but broader geographic scope, it represents a potential competitive alternative in energy-focused design.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
One Building social profiles
Digital presenceOne Building financial estimates
Financial estimateRevenue estimate
Valuation estimate
One Building leadership team
Management profileNumber of profiles
One Building funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
One Building M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about One Building
What does One Building do?
One Building develops and sells cloud-based BIM (Building Information Modeling) software for Japan's architecture and construction industry. Its core platform, BIM sustaina for Energy, supports energy performance calculations for Japan's Model Building Method and Standard Input Method compliance, enables ZEB (Zero Energy Building) planning, and includes AI-powered design advice reports. The company also offers BIM sustaina for Lifecycle for property/asset management, a free web-based energy calculation service, and implementation consulting.
Is One Building a public or private company?
One Building is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was One Building founded?
One Building was founded in 2021.
Where is One Building based?
One Building is headquartered in Meguro, Japan, in the Asia region.
How does One Building make money?
Four revenue lines are on record. BIM sustaina for Energy Subscription (Standard Input Method) is the primary driver. The others are free Tier (WEB Service & Model Building Method), professional Services (Energy Calculation Outsourcing) and BIM Implementation Consulting.
Who are One Building's main competitors?
Broad incumbents on record are Graphisoft (Archicad), Trimble, Nemetschek Group and Autodesk (Revit / Insight). Direct peers are DesignBuilder Software, Sefaira (Trimble), Integrated Environmental Solutions (IES) and Fukui Computer Architect (福井コンピュータアーキテクト). Otsuka Corporation (大塚商会) is listed as an others. cove.tool is listed as an emerging player.
Does One Building have an API?
No public API is recorded for One Building.
What industry is One Building in?
One Building's product category is Construction Technology Software. Its primary akta.pro industry code is BPAHAKAK, Building Information Modeling (BIM) & Digital Design Services, with a secondary code of EDAGAGAH, Architecture, Construction & Building Codes Reference (Design, BIM, Safety Codes). Its NAICS code is 541310 and its SIC code is 7371.