BREEAM Outstanding is the highest BREEAM rating a building can achieve. A building normally needs to score at least 85%, as well as meet minimum requirements in key areas. Points are earned across areas such as energy, water, materials, waste, transport, health and wellbeing, ecology and management.
An Outstanding rating therefore means the building has achieved a very high level of sustainability across the assessment, not just performed well in one area. BRE describes Outstanding new buildings as representing less than the top 1% of UK new non-domestic buildings for sustainability performance.
Here are some of the highest-scoring BREEAM Outstanding buildings in London with final ratings that can be verified in the official BREEAM Projects database.
| Rank | Building | Completed | Final BREEAM score | Building type | Project type |
|---|---|---|---|---|---|
| 1 | Bloomberg London | 2017 | 99.1% | Office headquarters | New build |
| 2 | 1 Broadgate | 2025 | 95.3% | Office, retail and leisure | New build |
| 3 | 7 Air Street | 2015 | 94.1% | Office | Major refurbishment |
| 4 | 2 Redman Place | 2019 | 94.0% | Office | New build |
| 5 | Brent Civic Centre | 2013 | 93.3% | Civic offices, library and community space | New build |
| 6 | Network | 2026 | 93.1% | Office and retail | New build |
| 7 | King’s Cross S1, 4 Handyside Street | 2021 | 92.8% | Office and retail | New build |
1) Bloomberg London
Image source: Bloomberg.
| Address | 3 Queen Victoria Street, London EC4N 4TQ |
| Completed | 2017 |
| BREEAM rating | Outstanding |
| Final score | 99.1% |
| Building type | Office headquarters |
| Project type | New build |
Bloomberg London is the company’s European headquarters in the City of London. The development is made up of two office buildings linked by bridges, with a public arcade running between them. It achieved a final BREEAM Outstanding score of 99.1%, the highest score on this list.
What stands out
- Ventilation responds to how many people are using each part of the building
- Rainwater, greywater and cooling water are collected and reused
- Vacuum toilets help cut water use
- Sweco reports water savings of around 25 million litres each year
- Solar PV panels are installed at roof level
Check the BREEAM record
Sustainability source: Sweco
2) 1 Broadgate
Image source: AHMM.
| Address | 1 Broadgate, Broadgate Circle, London EC2M 2QS |
| Completed | 2025 |
| BREEAM rating | Outstanding |
| Final score | 95.3% |
| Building type | Office, retail and leisure |
| Project type | New build |
1 Broadgate is a large mixed-use building next to Liverpool Street Station. It contains offices above two levels of shops and leisure space, with large terraces around the upper floors. The building reached practical completion in 2025 and achieved a final BREEAM Outstanding score of 95.3%.
What stands out
- The project used a large digital materials passport to track materials for future reuse
- 27% of materials reclaimed during demolition were reused on site or elsewhere at Broadgate
- The materials passport gained a BREEAM innovation credit
- More than 4,000 m² of terraces and green amenity space are provided
- Detailed energy modelling led to changes such as heat pumps, thermal stores and more heat recovery
Check the BREEAM record
Sustainability source: British Land
Project source: AHMM
3) 7 Air Street
Image source: Architects’ Journal / project photography.
| Address | 7 Air Street, London W1B 5AB |
| Completed | 2015 |
| BREEAM rating | Outstanding |
| Final score | 94.1% |
| Building type | Office |
| Project type | Major refurbishment and adaptive reuse |
7 Air Street is a Grade II listed office building near Regent Street. Two older buildings were joined and upgraded while much of the historic structure was kept. The refurbishment was completed in 2015 and achieved a final BREEAM Outstanding score of 94.1%.
What stands out
- The listed façades were retained and around 80% of the existing steel frame was kept
- Solar PV panels were added to the roof
- The building connects to a nearby energy centre using CHP and fuel-cell technology
- A species-rich green roof provides habitat for insects, birds and other wildlife
- The project was designed to produce much less carbon than an equivalent new building
Check the BREEAM record
Project source: RIBA / Barr Gazetas
Sustainability source
4) 2 Redman Place
Image source: New London Architecture / RSHP
| Address | 2 Redman Place, London E20 1JQ |
| Completed | 2019 |
| BREEAM rating | Outstanding |
| Final score | 94.0% |
| Building type | Office |
| Project type | New build |
2 Redman Place is a nine-storey office building at International Quarter London in Stratford. Health, wellbeing and environmental performance were considered together throughout the design. Completed in 2019, it achieved BREEAM Outstanding with a final score of 94.0%.
What stands out
- Rainwater harvesting saves the equivalent of about 4.5 Olympic-sized swimming pools of drinking water each year
- A large living wall creates around 2,000 m² of wildlife habitat
- Triple glazing and solar panels help cut carbon emissions
- Facilities are provided for 212 bicycles
- The project reported four BREEAM exemplary performance credits, including daylight and climate adaptation
Check the BREEAM record
Sustainability source: UKGBC
5) Brent Civic Centre
Image source: Brent Civic Centre – Alchetron, The Free Social Encyclopedia
| Address | Engineers Way, Wembley, London HA9 0FJ |
| Completed | 2013 |
| BREEAM rating | Outstanding |
| Final score | 93.3% |
| Building type | Civic offices, library and community space |
| Project type | New build |
Brent Civic Centre is the headquarters of Brent Council beside Wembley Stadium. It brings council offices, a library, civic spaces and community facilities together in one building. The centre was completed in 2013 and achieved a final BREEAM Outstanding score of 93.3%.
What stands out
- The project team reported a 33% reduction in carbon emissions
- Solar shading and natural ventilation help reduce energy demand
- The building uses a high-performance façade and green roofs
- A combined cooling, heating and power system was designed to use waste fish oil
- The large atrium brings natural light deep into the building
Check the BREEAM record
Project and sustainability source: Hopkins Architects
6) Network
Image source: Derwent London. Photograph: Jack Hobhouse
| Address | 95–100 Tottenham Court Road, London W1T 4AZ |
| Completed | 2026 |
| BREEAM rating | Outstanding |
| Final score | 93.1% |
| Building type | Office and retail |
| Project type | New build |
Network is a new office and retail building on the corner of Tottenham Court Road and Howland Street in Fitzrovia. It was completed in May 2026 and includes ten floors of offices, shops and landscaped outdoor space. Its final BREEAM assessment achieved Outstanding with a score of 93.1%.
What stands out
- 259 cycle spaces are provided for building users
- The building includes a private terrace and a landscaped roof garden
- Openable windows give occupants another way to control their environment
- The project was designed to a low embodied-carbon target of no more than 600 kgCO₂e/m²
- It has achieved SmartScore Platinum certification
Check the BREEAM record
Project source: Derwent London
7) King’s Cross S1, 4 Handyside Street
Image source: BIM Technologies / King’s Cross.
| Address | 4 Handyside Street, London N1C 4DJ |
| Completed | 2021 |
| BREEAM rating | Outstanding |
| Final score | 92.8% |
| Building type | Office with ground-floor retail and restaurants |
| Project type | New build |
S1 is an 11-storey office building at King’s Cross, also known as 4 Handyside Street. It includes flexible office floors, shops and restaurants at ground level, balconies and a landscaped roof terrace. The office assessment achieved a final BREEAM Outstanding score of 92.8%.
What stands out
- The building connects to the King’s Cross district energy network.
- Orientation and thermal modelling were used to reduce energy demand.
- Thermal mass helps with cooling.
- Openable windows give occupants access to natural ventilation.
- Balconies and a landscaped roof terrace provide outdoor space.
Check the BREEAM record
Project and sustainability source: King’s Cross