Østensjøveien 27, Oslo

BREEAM certification is part of NCC’s environmental policy

Project Details

  • Scheme & Version: BREEAM NOR 2012 – Commercial: Offices
  • Stage: Final
  • Location: Oslo, Norway
  • Score & Rating: 75.55 Excellent
  • Certificate Number: BREEAM-0049-8949

Related links

Project Team

  • Client: NCC Property Development AS, Oslo, Norway
  • Contractor: NCC Construction
  • Architect: Henning Larsen Architects
  • Energy Engineer: Rambøll
  • Building Services: Bjerke Ventilasjon, Eriksen og Jensen AS, Lys og Varme
  • BREEAM AP: NCC Property Development and NCC Construction
  • BREEAM Assessor: Golder Associates
  • Structural Engineer: Kjell Ludvigsen AS

About the building

Ø27 is a multi-tenanted, six storey 17,000m2 commercial passivhaus building that was completed in December 2013. The project developer is NCC Property Development and the building was recently sold to a syndicate arranged by RS Platou Real Estate AS and Malling & Co Eiendomskapital.The occupiers are NCC, Norsk Dental Depot, Weifa, Mysoft og Constructor Norge.

BREEAM certification is part of NCC’s environmental policy – all internally developed commercial buildings must achieve BREEAM Very Good or better. Ø27 is a pilot project for the national, Norwegian version of BREEAM, aiming for a BREEAM NOR Excellent rating.


CAROLA LAVÉN, BUSINESS AREA MANAGER AT NCC PROPERTY DEVELOPMENT SAYS: “Third party certification with BREEAM creates incentives for all parties involved in a building project to strive in the same direction and focus on sustainability issues. We are convinced that our high ambitions in this respect pay-off in terms of better returns on our investments. This is particularly true at a time of financial insecurity, which has increased the investor demand for high quality properties with low risks. Certified buildings are definitely higher valued and create safer long term investments.”


Image: Kolonihaven

Environmental features

Ø27 has half the carbon footprint of an average Norwegian building and is constructed with low carbon building materials. Excess heat from industrial processes in a neighbouring building covers 100% of heat requirements. To further reduce energy consumption, there has been an active choice not to install a local cooling system, but to use the building shape and solar shading system to create a good indoor climate.

All WCs have low flush volume. All water taps have electronic sensors and both taps and showers have low maximum flow rates.

The façade is made up of building elements that can easily be picked apart and replaced. The columns are drawn into the building so that the facade can be replaced if desired. The building is arranged so that it is possible to convert part of the building for residential purposes in the future by simple modifications.

The BREEAM Assessment

Aiming to score over 95% of credits in the Management, Health and Wellbeing, and Transport sections.

With Passivhaus design and using excess heat from the next-door building, the project should achieve a high score in Ene1, 5, & 23 and Pol4.

Building Services

Østensjøveien 27 is built to a Passivhaus design and has a calculated energy consumption of 67.5 kWh/m2/yr,

Heat and fresh air is provided through the ventilation system. Each user has a supervision unit so they can control both heating and cooling.

The building is tailored so each user can individually control glare and artificial lighting.

Energy use is reduced through the use of daylight and solar shading from neighbouring buildings, minimising the use of artificial lighting.

Green Strategy

The task of the Danish architects Henning Larsen was to design a building with low energy consumption through artificial light. The building goes beyond immediate BREEAM requirements for daylight.

Ø27 aims to achieve a BREEAM innovation credit on NOx emissions, using excess heat from the industrial building next door. With very few car parking spaces, and a lot of cycle racks it meets and exceeds BREEAM requirements for parking spaces and alternative transport.