Sustainability
BREEAM MEP design and credit support
Building services design and evidence for the BREEAM credits the MEP engineer controls — energy, water, health and wellbeing, and pollution.
- Discipline
- Sustainability
WHAT IT IS
BREEAM assesses a building across a set of categories, and a defined subset of them is decided almost entirely by the building services design. Energy, water, and much of health and wellbeing and pollution sit with the MEP engineer rather than with the architect or the assessor.
The credits the MEP design controls or heavily influences include Ene 01 reduction of energy use and carbon emissions, Ene 02 energy monitoring and sub-metering, Ene 04 low carbon design, the Wat credits on consumption, monitoring, leak detection and equipment specification, Hea 02 indoor air quality, and the Pol credits on refrigerant impact, local air quality and surface water run-off.
Where SDE is appointed as the licensed BREEAM Assessor, the assessment is run alongside the design. Where an assessor is already appointed by the client, SDE provides the design-team evidence in the form the assessor needs.
New homes: BREEAM Residential, formerly the Home Quality Mark
Housing is assessed under a different BREEAM scheme from the one above, and the name changed recently enough that both are still in use. New-build self-contained homes — houses, and flats within a block — are assessed under BREEAM UK New Construction: Residential, which is what the Home Quality Mark became when BRE brought it into the BREEAM range in April 2025. Existing Home Quality Mark certificates remain valid, and assessments registered before the transition complete under the original framework.
The distinction follows building regulations rather than what the building looks like. Anything classified under Part L Volume 1 as a dwelling goes to the residential scheme, which scores each home individually and accounts for the shared areas around it — homes for sale, social housing, private rented and build-to-rent alike. Buildings that accommodate people without providing self-contained homes stay in the non-domestic scheme as BREEAM Multi-residential: hotels, care homes, halls of residence, and anything with shared living space or on-site support.
That boundary matters more than it sounds, because it decides which credits exist. The residential scheme scores across cost, wellbeing and environment, and the MEP contribution is the same in substance as it is on a non-domestic building — the energy strategy, the ventilation design and its effect on indoor air quality, water consumption and metering, and the evidence behind all of it. A scheme assessed against the wrong standard is re-registered, not re-scored.
WHEN YOU NEED IT
At Stage 1 or 2, before the target rating is fixed in a planning condition or a funding agreement.
A BREEAM rating chased retrospectively costs more and achieves less, because several of the highest-value credits — Ene 04, Hea 02, the Wat credits — depend on decisions made during concept design, and the pre-assessment that sets a realistic target has to happen before those decisions are closed off.
OUR PROCESS
Pre-assessment
An honest credit-by-credit view of what the project can realistically achieve, what each remaining credit costs, and where the cheapest points are. A target set without this is a target set by hope.
Through design
Credits tracked as design decisions are made, with the evidence captured at the point it exists rather than reconstructed at submission. Most lost credits are lost to missing evidence rather than to a failed design.
At submission
The design-stage and post-construction evidence packs, in the assessor's format.
DELIVERABLES
What you receive
- BREEAM pre-assessment for the MEP credits
- Ene 01 energy modelling and improvement options
- Metering and sub-metering strategy for Ene 02
- Passive design and free cooling analysis for Ene 04
- Water consumption calculation and equipment schedule for the Wat credits
- Indoor air quality plan input for Hea 02
- Refrigerant, NOx and surface water evidence for the Pol credits
- MEP evidence for BREEAM Residential — Home Quality Mark — on new homes
STANDARDS
Standards applied
The editions in force at the time of design. Where a standard is amended mid-project we confirm which edition the appointment is based on.
- BREEAM UK New ConstructionBRE GlobalBRE
- BREEAM UK New Construction: ResidentialBRE Global — formerly the Home Quality Mark, renamed April 2025BRE
- BREEAM UK Refurbishment and Fit-outBRE GlobalBRE
- CIBSE TM39Building energy meteringCIBSE
- CIBSE TM65Embodied carbon in building servicesCIBSE
- BS EN 16798-1:2019Indoor environmental input parametersBSI
QUESTIONS
Common questions
Is BREEAM or the Home Quality Mark used for new homes?
Both names describe the same scheme now. The Home Quality Mark was brought into the BREEAM range in April 2025 and is called BREEAM UK New Construction: Residential. It is the correct scheme for new-build self-contained homes, whether houses or flats within a block, and it scores each home individually while accounting for the shared areas. Existing Home Quality Mark certificates stay valid and assessments registered before the transition complete under the original framework.
Which scheme applies to a block of flats, student accommodation or a care home?
It depends on whether the units are self-contained homes, not on the building type. A block of self-contained flats is assessed under BREEAM UK New Construction: Residential, the former Home Quality Mark, because each flat is classified as a dwelling under Part L Volume 1. Accommodation that is transient, has shared living space, or provides on-site care or warden support — hotels, care homes, most halls of residence — is BREEAM Multi-residential within the non-domestic New Construction scheme. Some student and retirement accommodation falls on the residential side where the units are genuinely equivalent to a self-contained flat, which is worth settling before the assessment is registered.
Which BREEAM credits does the MEP engineer control?
Principally the energy credits, the water credits, and significant parts of health and wellbeing and pollution — Ene 01 on energy use and carbon, Ene 02 on metering and sub-metering, Ene 04 on low carbon and passive design, the Wat credits on consumption, monitoring and leak detection, Hea 02 on indoor air quality, and the Pol credits covering refrigerant impact, local air quality and surface water run-off.
What is the difference between a BREEAM Assessor and the design team?
The licensed BREEAM Assessor is the person who registers the assessment with BRE, judges the evidence against the criteria and submits it for certification. The design team produces the design and the evidence that the assessor judges. The two roles are distinct, and the assessment cannot be certified without a licensed assessor being appointed.
When should BREEAM start on a project?
Before the target rating is committed to in a planning condition or funding agreement, which usually means RIBA Stage 1 or 2. Several of the highest-scoring MEP credits depend on concept-stage decisions about ventilation strategy, cooling and metering, and a pre-assessment run after those are fixed can only report what has already been lost.
Does a BREEAM rating mean the building will use less energy?
Not by itself. BREEAM scores a wide range of criteria, of which energy is one category, and the energy credits are assessed against modelled rather than measured performance. A high rating with weak Ene credits is possible. If measured operational performance is the objective, that has to be set as its own target with its own methodology.