Building Research Establishment Environmental Assessment Method (BREEAM)

BREEAM is the world's foremost environmental assessment method and rating system for buildings, with 250,000 buildings with certified BREEAM assessment ratings and over a million registered for assessment since it was first launched in 1990.

BREEAM sets the standard for best practice in sustainable building design, construction and operation and has become one of the most comprehensive and widely recognised measures of a building's environmental performance. It encourages designers, clients and others to think about low carbon and low impact design, minimising the energy demands created by a building before considering energy efficiency and low carbon technologies.

A BREEAM assessment uses recognised measures of performance, which are set against established benchmarks, to evaluate a building’s specification, design, construction and use. The measures used represent a broad range of categories and criteria from energy to ecology. They include aspects related to energy and water use, the internal environment (health and well-being), pollution, transport, materials, waste, ecology and management processes.

A certificated BREEAM assessment is delivered by a licensed organisation, using trained assessors at various stages in a buildings life cycle. This provides clients, developers, designers and others with:

  • market recognition for low environmental impact buildings,
  • confidence that tried and tested environmental practice is incorporated in the building,
  • inspiration to find innovative solutions that minimise the environmental impact,
  • a benchmark that is higher than regulation,
  • a system to help reduce running costs, improve working and living environments,
  • a standard that demonstrates progress towards corporate and organisational environmental objectives.

Our services:

Using the skills of a trained BREEAM Assessor and of a sustainability-oriented engineering team, Buro Ecoseven provides services to assist the project in achieving BREEAM certification:

  • Carry out an initial review of the proposed project and assess its compliance with BREEAM.
  • Work with the design team throughout the design process focusing in areas that need to be addressed for BREEAM certification.
  • Provide advice and guidance on sustainability and energy –efficiency to maximize the opportunity to accomplish certification.
  • Assist clients to achieve the desired rating level.
  • Conduct the BREEAM certification assessment in accordance with BREEAM International.
  • Provide with compliance calculations and documentation.

BREEAM Credit Services:

Credit: Man1 Commissioning

General Credit Requirements:

An appropriate commissioning agent is appointed to monitor and program pre-commissioning, commissioning and, where necessary, re-commissioning of the following key services (where they are present in the building) on behalf of the client: 

  • Heating systems
  • Water Distribution systems
  • Lighting systems
  • Ventilation systems
  • Refrigeration systems
  • Automatic controls
  • Cold storage

 Commissioning is being carried out in line with commissioning guidance. Carry out commissioning procedures where Building Management System (BMS) is specified.

 Compliance Service:

Completion of the commissioning process activities for the building systems specified in the requirements of this credit.

Development of the commissioning records and reports specifying monitoring actions carried out, commissioning procedures executed in compliance with relevant standards, performance testing activities, and BMS/controls commissioning activities where present.


Credit: Man12 Life Cycle Costing

General Credit Requirements:

Carry out a Life Cycle Cost Analysis (LCC) based on the proposals developed during the concept design/ design development.

 The Life Cycle Cost Analysis should cover the following stages:

  • Construction
  • Operation
  • Maintenance
  • End of life

Compliance Service:

Life Cycle Cost Analysis of the envelope, structure, finishes and services is performed. Different scenarios are compared to choose the best alternative with the lowest discounted life cycle costing over the study period.


Credit: Hea1 Daylighting

General Credit Requirements:

The provision of daylight has been designed and modeled in compliance with national best practice daylighting guides (or UK guides when national are not available).

 Depending on the building type, demonstrate compliance with the average daylight factor and uniformity ratio specified.

 Compliance Service:

Provide daylight model and illuminance map demonstrating that the appropriate level of illuminance has been achieved for all relevant areas.


Credit: Hea7 Potential for Natural Ventilation

General Credit Requirements:

Areas of the building are designed to be capable of providing fresh air entirely via a natural ventilation strategy demonstrated by calculation or using ventilation design tool that the natural ventilation strategy provides adequate cross flow of air to maintain required thermal comfort conditions and ventilation rates.

Compliance Service:

A complex airflow model is provided to determine the ventilation system performance and thermal comfort parameters.


Credit: Hea 8 Indoor Air Quality

General Credit Requirements:

The building’s air intakes and exhausts are over 10m apart to minimize recirculation.

The building has been designed to provide fresh air rates to dilute pollutants in accordance with national best practice guidelines or with the appropriate European standard.

 Compliance Service:

A comprehensive indoor air quality analysis through measurement and applied computational fluid dynamic models are used to provide with the calculations and demonstrate compliance with the European standards.


Credit: Hea10 Thermal Comfort

General Credit Requirements:

An analytical measurement and evaluation of the thermal comfort levels of the building has been carried out using the PMV (predicted mean vote) and PPD (predicted percentage of dissatisfied) indices in accordance with ISO 7730:2005

Thermal modeling has been carried out aimed at optimizing thermal comfort.

 Compliance Service:

Metering and thermal comfort modeling is used to provide calculations, demonstrate compliance with the standards and provide recommendations on design improvement. 


Credit: Ene1 Energy Efficiency & Ene18 Dwelling emission rate

General Credit Requirements:

Determination of the energy performance of the building using a recognized Dynamic Simulation Modeling tool.

 The number of credits achieved is based on the predicted energy performance from the assessed building compared to the Current Standards Building Energy Performance Index. The Current Standards Building will be generated using local building regulations, or where these are not defined, using Appendix G of ASHRAE Energy Standard 90.1-2007.

 Compliance Service:

 Calculation of the baseline building performance rating according to the building performance rating method in Appendix G of ANSI/ASHRAE/IESNA Standard 90.1-2007, using a computer simulation model for the whole building project.

 The energy analysis done including all energy costs associated with the building project including, but not limited to, process energy (e.g. computers, kitchen cooking and refrigeration, general miscellaneous equipment, laundry washing, elevators and escalators), non-process energy (e.g. lighting, HVAC, service water heating), building materials, building orientation, weather conditions and occupancy/system schedules.

 The carbon emission rate is calculated based on the project's energy consumption.


Credit: Ene5 Low or Zero Carbon Technologies

General Credit Requirements:

A feasibility study has been carried out by an specialist to establish the most appropriate local (on-site or near-site) LZC energy source for the building/development.

Compliance Service:

Comprehensive feasibility study addressing:

  • Energy generated from renewable sources
  • Payback analysis
  • Cost/benefits
  • Carbon emissions of the system
  • Recommendations on the selection of technologies.


Credit: Ene19 Building Fabric

General Credit Requirements:

Determination of the improvement in whole building heat loss over the regulatory base case using a Dynamic Simulation Modeling tool.

 The number of credits achieved is based on the predicted improvement in the whole building heat loss from the assessed building compared to a modeled building compliant with local building regulations. Where there are no defined building fabric standards, those set out in Appendix G2 of ASHRAE Energy Standard 90.1-2007 (for high rise buildings) and ASHRAE Energy Standard 90.2-2007 (for low rise buildings) apply.

Compliance Service:

We provide a comprehensive thermal analysis of the building. This include the calculation of thermal resistance values (R-values) of building assemblies, conductance values (U-values) of glazing systems, analysis of thermal bridging, infiltration/exfiltration rates, etc.


Credit: Mat01 Life Cycle Impacts

General Credit Requirements:

Encourage the specification of construction materials with a low environmental impact (included embodied carbon) over the full life cycle of the building. Recognize the use of a life cycle assessment (LCA) tool to measure the life cycle environmental impact of the building elements.

Compliance Service:

We carry out the life cycle assessment (LCA) process through the use of a detailed and BREEAM accepted LCA tool to assess the embodied and operational impacts of building assemblies and systems.


In addition to the services mentioned above, our team of specialists is able to complete documentation for several other credits in BREEAM. 

For more information about BREEAM and our services, please contact us or send us an inquiry.