Digital Works Supervision System (DWSS) for Hong Kong

A Digital Works Supervision System is the web-based portal DEVB requires on Hong Kong capital works contracts above HK$30 million tendered on or after 1 April 2026. It digitises the mandatory site forms and records (RISC, site diary, safety and cleansing inspections, labour returns and contract management), collects data from smart site applications, and holds the formal project documents (paragraph 9, Annex A 1.1).

Kodifly's SpatialSense is a complete DWSS built to Annex A of TC(W) No. 8/2025, with all six mandatory modules, Smart Document Management and AI built in, plus 360, drone and LiDAR capture in the same dated record. The circular sets requirements rather than naming products, so compare any proposal against Annex A.

Request for Inspection / Survey Check (RISC) with linked history and a status dashboard, Site Diary / Site Record Book, Site Safety Inspection Records, Cleansing Inspection Checklists, Labour Return Record covering every field of G.F. 527, and Contract Management with compensation events, instructions, early warnings, programme, payment and NEC Health Check data (Annex A 7.5).

Paragraph 6 lists four key improvements. A Smart Document Management component replaces the separate EDMS. The Contract Management module adds NEC Health Check data. The circular sets project team requirements for managing the DWSS. And contractors adopt AI technologies within the DWSS.

Capital works contracts, including capital subventions contracts under Head 708, with a pre-tender estimate above HK$30 million and tendered on or after 1 April 2026. Earlier contracts implement the enhancements as far as practicable, and bureaux and departments should adopt it in other works contracts such as maintenance and term contracts.

Annex A 3.1 asks for a live demonstration within one month of commencement, a proposal within eight weeks and commissioning within three months, or as agreed with the employer's representative.

Design of forms, records, reports and dashboards, workflow processes and allowable times, interfacing protocols with smart site data systems, platform architecture and network configuration, hosting environment with independent auditor reports where relevant, delivery schedule and user acceptance criteria, backup and disaster recovery, security assurance, and any AI features (Annex A 3.1.2, with 1.5.2 and 2.3.2 for AI and hosting reports).

A desktop browser over HTTPS with no extra software plus native iOS and Android apps (1.6), at least 256-bit SSL with encryption in transit and at rest (4.1), scheduled and off-site backups (4.2), 99.9% uptime during working hours and a disaster recovery plan (2.4), and data available to third-party applications including iCWP by API within 24 hours (1.7.2).

No. Contractors are no longer required to procure a separate Electronic Document Management System, because the Smart Document Management component within the DWSS fulfils those requirements (paragraph 11).

The estimated cost would normally not exceed HK$1.5 million or 1% of the pre-tender estimate, whichever is higher, with a cap of HK$10 million. Exceeding it needs approval from an officer at D2 rank or above. It does not form part of the contract computer facilities estimate (paragraph 12).

The DWSS is the centralised platform that collects and consolidates smart site data (paragraph 12, footnote 2). Kodifly also delivers the devices and the Smart Site Safety System that feed it, as one project.

The DWSS is handed over to the employer at completion, a professional-rank project team member and a resident site staff member manage it, and its proper adoption and use is a standard item in technical audits (paragraphs 15 and 16, Annex A 11.2; project team in 3.2).

TC(W) No. 2/2023, which required a DWSS on capital works contracts above HK$30 million tendered from 1 April 2023.