Standards | Software | Simulation
Optisim Consulting is a building physics and energy simulation practice in Brunei, and is developing the data infrastructure to digitise the national green building standard.
From the certification and simulation work we offer today, through the platform we're building around it, to the national-scale vision it all points toward.
Guiding building owners and developers through the Brunei Accredited Green Unified Seal, from early-design strategy and evidence modelling to documentation and final certification.
Dynamic building energy simulation, retrofit analysis, overheating risk, passive design and net-zero pathways, modelled and optimised.
One platform for the full BAGUS journey, for facilitators and reviewers alike: centralised scoring, evidence upload, and workflow status that make certification faster, more consistent, and auditable.
04 · Long-term vision
Simulation today happens one building at a time. The ambition is the scale above it: the national building stock.
Certification is what gets you there. Every BAGUS project leaves behind a structured record, and enough of them become a building-stock database — one that lets energy planning run on certified building data rather than estimates or national averages.
Get in touch
Start a conversation about certification, simulation, or the bigger picture. The earlier the better — most of a building's performance is decided at design stage.