Before requesting SBEM calculations: the project information to gather
An early, usable brief helps energy modelling inform the design rather than arrive after the decisions are fixed.
Define the building and the stage
SBEM is part of the approved calculation framework for non-domestic buildings. A quote needs to establish whether the work is for design-stage compliance, an as-built submission, an EPC or a combination. It also needs the project jurisdiction, because building regulations are not identical across the UK. Read the Approved Document L guidance for England’s current route.
Start with drawings that describe the spaces
Plans, elevations and sections help the modeller understand geometry, floor area, zones and building use. Identify any mixed-use areas, unconditioned spaces or unusual plant. If drawings are still changing, say so: an early model can still be useful, but revision needs to be planned.
Gather the specification you have
Building fabric, glazing, heating, cooling, ventilation, hot water, lighting and controls all influence the calculation. A complete equipment schedule may not exist at concept stage. Mark proposed values as provisional and give the design team a route to update them.
Ask what the output will be used for
A compliance calculation, BRUKL report and non-domestic EPC are related but distinct deliverables. Ask what building control or the client actually needs at each stage. Our SBEM service page outlines the initial information, while the commercial EPC page explains the assessment of an existing or completed building.
A good first request is brief: building address, use, approximate area, stage, key drawings, current specification and the date by which a decision is needed. That gives a modeller enough context to identify missing evidence and quote honestly.