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NS 3420-1:2024 — Specification texts for building, construction and installations, part 1

The shared language for describing and pricing work in Norwegian construction projects: the code system, measurement rules and tolerance requirements. When the specification builds on NS 3420, both parties know what the price covers and disputes over scope become fewer.

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Designation
NS 3420-1:2024
Edition
2024
Publisher
Standard Norge
Group
Building, design and condition
Area
Municipal and administrative law
Read date
2026-09-09

Standards are not statute. They are purchased documents from Standard Norge that parties agree to, or that regulations refer to. We carry the designation, edition and scope, never the text.

Official text

Used together with

  • Planning and Building Act

    LOV-2008-06-27-71In force: 2009-07-01Direktoratet for byggkvalitet

    The Act governs land-use planning at national, regional and municipal level, and its building part sets the requirements for applications, responsibility, control, completion certificates and supervision. It determines both what may be built where and who answers for the works.

Building, design and condition

  • Technical condition analysis for the sale of dwellings

    NS 3600:2018Standard Norge

    The method for the condition report accompanying a home sale: which building elements are examined, how thoroughly, and how condition grades are set. The standard underpins the requirements for condition reports in the property sales rules.

  • Acoustic conditions in buildings, sound classes for building types

    NS 8175:2019Standard Norge

    Sound classes for dwellings, schools, kindergartens, hospitals and offices. The technical building regulations point to class C as the minimum level, which makes the standard the practical yardstick in both design and defect claims.

  • Criteria for passive houses and low energy buildings, non-residential

    NS 3701:2012Standard Norge

    Energy criteria for passive houses and low energy non-residential buildings: heat loss figures, heating demand and requirements for building elements. It is used in public procurement and grant schemes where an energy level must be documented.

  • Information management using BIM, concepts and principles

    NS-EN ISO 19650-1:2018Standard Norge

    The framework for ordering, delivering and managing digital building information across a building's whole life cycle. Public clients refer to the series in tender documents, and it governs who owns and updates the model.

Norwegian law

All standardsNorwegian law

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