SBEM calculations: what belongs in the project brief
The design-stage details that help scope non-domestic SBEM calculations without confusing them with an existing-building EPC.
SBEM calculations begin with design information, so the most useful first question is: which version of the building are we assessing? A sketch layout, a coordinated design and a completed building do not provide the same level of detail. If the geometry or building services are still moving, say so early; changes can alter the model inputs and the work needed to update the calculations.
For a non-domestic project, share the building use, location, approximate floor area and current stage. Drawings should identify the envelope, zones and major openings where available. Specifications for insulation, glazing, heating, cooling, ventilation, lighting and controls help establish a credible starting point. If any of these are provisional, label them clearly rather than treating assumptions as final decisions.
SBEM is used within the approved methodology for assessing energy performance of many non-domestic buildings. The project team may need calculations at design and later stages, but the exact deliverables depend on the building and the brief. An EPC for an existing commercial property is a different enquiry: it involves assessment of the building as found. If you are unsure which route applies, describe whether the work concerns a proposed design, a new completion or an existing property.
Send Energy Move the latest drawing set, project stage, known services strategy and target date. We can identify missing inputs, discuss the intended calculation scope and provide a quotation before work is commissioned. Clear version control at this point can save a second round of modelling when the design team makes its next decision.
For the next step, see SBEM Calculations.