As Scotland accelerates towards a low-carbon future, the energy performance of non-domestic buildings has never been more important. Meeting climate targets, reducing operating costs, and demonstrating compliance with Section 6 (Energy) of the Scottish Building Standards all rely on accurate modelling. One of the key tools used at design stage is the BRUKL (Building Regulations UK Part L) output report, generated using SBEM or DSM software.

Although Part L is an English/Welsh regulation, Scotland uses an adapted SBEM methodology and still outputs a BRUKL-style compliance document to show that a building meets national emissions and energy-performance requirements.

A BRUKL report is the formal document produced after running SBEM or DSM calculations for a new building, extension, or major refurbishment. It presents the building’s predicted energy performance and carbon emissions against regulatory benchmarks.

At its core, the assessment compares two values:

• Target Emission Rate (TER) – the maximum allowable CO₂ emissions for the building type.
• Building Emission Rate (BER) – the modelled emissions of the proposed design.

For compliance, the BER must be lower than or equal to the TER, demonstrating that the proposed design meets Scotland’s energy and carbon standards.

The calculation also assesses fabric performance, HVAC efficiency, lighting, ventilation, solar gains, fuel type, building services controls, and distribution losses.

A BRUKL report therefore provides a full overview of how the building will perform in operation and what improvements, if any, are needed to achieve compliance.

Tailored Solutions: We recognise that each building project is unique. Our experts can provide tailored solutions to suit the specific requirements of your project, whether it's a new construction, a renovation, or an extension.

Early Engagement: It's crucial to involve our team early in the design process. By doing so, we can identify potential energy efficiency improvements and cost-effective solutions that can be integrated seamlessly into your project.

Regulatory Compliance: Staying compliant with building regulations is paramount. We will ensure that your project meets all relevant energy efficiency standards, helping you avoid costly delays and penalties.

Reducing Energy Use and Carbon Emissions

Accurate modelling allows design teams to minimise heat loss, optimise building services, and reduce reliance on carbon-intensive fuels. Lower emissions mean a smaller environmental footprint and support Scotland’s Net Zero targets.

Mandatory Compliance with Section 6

All new non-domestic buildings—and many refurbished ones—must demonstrate compliance with Scottish energy standards before construction can commence. Failure to pass BRUKL calculations can delay warrants, add redesign costs, or result in non-compliance enforcement.

Lower Operational Costs

An energy-led design reduces heating, cooling, and lighting demands. For owners and occupiers, this translates directly into lower utility bills and improved long-term running costs.

Enhanced Asset Value and Marketability

Modern occupiers increasingly favour sustainable, cost-efficient buildings. Strong BRUKL performance—and the EPC that follows—can increase asset value and make properties more competitive in the market.

How We Can Help

We provide clear, practical support at every stage.

Early-Stage Design Advice

Engaging us at concept stage allows us to identify cost-effective compliance strategies before decisions are locked in. This avoids redesign, delays, or over-specification later.

Tailored Modelling Solutions

Every building is different. We analyse the proposed construction, HVAC systems, lighting, and controls, then model realistic scenarios that reflect how the building will actually be used.

Full Compliance Reporting

We produce the complete BRUKL output, Section 6 compliance statement, and supporting documentation required for building warrant submission.

Optimisation

If a design does not initially comply, we provide targeted, actionable recommendations—such as fabric upgrades, plant changes, or control improvements.