What we do
CNK Lab has two businesses: CAD / BIM-CIM services, which produce drawings and models, and construction software & tools, which turn site work into usable tools. Both are handled by engineers who know how construction actually works. This page covers the scope, process and contract models of each.
Business 1 — CAD / BIM-CIM services
We take on drafting and modelling work from design offices and contractors, in Japanese. Deliverables follow your drawings and specifications and comply with Japanese drafting standards.
Drawing production and revision across architecture, structure, MEP and civil. We also convert existing drawings to CAD, check drawings and verify quantities.
Mainly modelling from 2D drawings and sketches: architecture, structure, MEP, bridges and earthworks, to the LOD you specify.
Quantities calculated from models and drawings, with take-off sheets prepared in Excel to suit your use.
As-built drawings reflecting changes made during construction, and organised digital as-built documentation.
Examples of 2D drawings our team members have drafted and checked. We draft to your title block, layer standards and symbols.
Project details in the title blocks have been masked.
We quote after reviewing your drawings and specifications. A first project can start as a small trial.
Delivered to your title block, layer standards and naming conventions.
From a spot request of a few drawings to a substantial package. We agree the scope and schedule and deliver by deliverable.
A standardised workflow based on Japanese drafting standards, and data handling under NDA, apply to every project.
From architectural and structural BIM for high-rise residential to a bridge tendon layout model and wind-farm earthwork CIM. A selection is shown within our confidentiality obligations.
See selected works
Business 2 — Construction software & tools
Reporting with daily reports, photos and forms; review and approval flows; drawing and data preparation. We turn the manual work inside a construction company into a system that runs on a phone and in a browser, and handle everything from requirements to development, operation and maintenance.
From on-site entry through internal review to PDF form output, in one flow.
From internal review to client approval, everyone sees the current stage on screen, and who confirmed what, and when, is kept on record.
Labelling drawings, site photos and BIM data, and preparing data for AI development in construction.
Converting scanned drawings to CAD, and building tools that automate routine Excel and CAD work.
We start by mapping the work as it is done today. Rather than writing a large specification, we show working screens early and refine them in use.
Genba Tsuzuri is our daily-report, photo and form system with a review and approval workflow, made into a product. Reports and photos are entered from a phone on site, and internal review and client approval run in one flow. Built for contractors and specialist trade companies.
Learn more about Genba Tsuzuri
Shared foundation
Japanese-language support, hours aligned with Japan, data handling under NDA and multi-layer QA / QC — the same setup for both businesses.
FAQ
Yes. We take spot requests starting from a few drawings. For continuous work, consider the monthly dedicated-team model.
Drawing types and count (or model scope and LOD), the target schedule, and your title block and layer standards. If you do not have everything yet, get in touch anyway.
Yes. Meetings, specification alignment, Q&A and deliverables are all handled in Japanese. English and Vietnamese are also available.
We sign a non-disclosure agreement before receiving any drawings, and access to your drawings and specifications is limited to those who need it.
Yes. Automating routine Excel work or building a form-output tool are typical starting points. We look at how the work flows and propose scope and approach.
Two hours from Japan. We work Monday to Friday, 9:00–18:00 JST.
