Schemes
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Norway
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NS 3720
Norway
Standard & method
Voluntary

NS 3720

The Norwegian standard for greenhouse-gas calculation of buildings, the method most other Norwegian schemes are built on.

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What is NS 3720?

NS 3720 sets out how to calculate the greenhouse-gas emissions of a building in Norway: system boundaries, study period, phase definitions and reporting. It is the method underneath TEK17, BREEAM-NOR and most Norwegian client requirements.

Working directly to NS 3720 is the right choice when a client asks for a klimagassregnskap without naming a certification scheme.

How Reduzer supports NS 3720

✓
NS 3720 method implemented as the calculation core, with study period and phase set configurable per project.
✓
A standalone klimagassregnskap report for clients who ask for the method rather than a scheme.
✓
Results carry straight over to TEK17, BREEAM-NOR and FutureBuilt ZERO without recalculating.
Key facts
Country
Norway
Type
Standard & method
Status
Voluntary
Method
NS 3720 (60-year default, 50-year for TEK17)
Phases
A1–A3, A4, A5, B2, B4, B6, C1–C4, D
Report template
NS 3720 klimagassregnskap
standard.noBook a demo

Related schemes

NO
↗
TEK17 (§17-1)
Norway
Norway's building regulation requiring a greenhouse-gas account for new housing blocks and commercial buildings, in force since 1 July 2022.
Regulatory
Mandatory
NO
↗
BREEAM-NOR
Norway
Norway's adaptation of the BREEAM certification scheme, where the Mat 01 life-cycle assessment credits reward documented emission reductions.
Certification
Voluntary

FAQs

What Reduzer is, who it's for, and how it helps you reduce emissions and stay in control.

What study period does NS 3720 use?

60 years as the standard default; TEK17 requires 50 years, and Reduzer sets the period from the scheme you pick.

Is NS 3720 a requirement in itself?

No, it is the calculation method. The requirement comes from TEK17, a certification scheme or a client's own brief.

Which schemes build on NS 3720?

TEK17, BREEAM-NOR, FutureBuilt ZERO and most Norwegian client requirements use NS 3720 as their method, so one model serves them all.

Ready to see NS 3720 in Reduzer?

Reduce emissions, gain control from the first sketch to the declaration.

Start calculating