Energy Assessments for Commercial Buildings

Compliance and Certificates for Commercial Buildings

For developers, landlords, managing agents and facilities managers. One contact for new buildings, fit-outs and existing property. For upgrades to existing buildings, see energy assessments for retrofit projects.

SBEM calculations and BRUKL reports

An SBEM calculation shows that a new or altered commercial building meets Part L of the Building Regulations. It produces the BRUKL report that building control asks for and, at completion, the building's EPC.

If the junction defaults are holding the BRUKL back, our PSI value and thermal bridging calculations replace them with calculated values. We also do U-value calculations for walls, roofs and floors.

Commercial EPCs

You need a valid EPC when a building is sold, let or newly built, and it lasts 10 years. We survey the building, model it and lodge the certificate on the government register.

EPC B upgrade plans

The government has confirmed that rented commercial buildings over 1,000 m² will need to reach EPC B by 2031. This is not yet law. We model the lowest-cost route from EPC D or E to B, with costed upgrades and payback.

TM44 air conditioning inspections

If the air conditioning in your building has a combined rated output of more than 12 kW, the law requires an inspection at least every five years.

TM52 overheating assessments

Dynamic thermal modelling that shows whether offices, schools and other non-domestic buildings will overheat in summer, for planning, BREEAM and London Plan submissions.

Display Energy Certificates

Public authority buildings over 250 m² that the public visit have to display one. We produce the DEC and its advisory report.

Solar PV for commercial buildings

If the BRUKL fails or the building needs a better EPC, we size the solar PV in the SBEM model and can introduce a trusted MCS-certified installer.

Fire risk assessments and asbestos surveys

If you own or manage a commercial building or a block of flats, the law requires a written fire risk assessment. Buildings from before 2000 also need an asbestos survey. We arrange both, with one point of contact.

Part L changes in March 2027

The new Part L for commercial buildings comes into force in England on 24 March 2027. Projects that submit plans before that date and start on site within 12 months can stay on today's rules.

Email your plans or WhatsApp us for a free quote.