KOMO certificate and quality mark

The KOMO Quality Mark and KOMO Certificates are widely used in construction. When products, systems and processes have the KOMO quality mark, they comply with Dutch legislation and regulations such as the Building Decree and Soil Quality Decree. The Dutch government recognizes a large part of the KOMO quality declarations through the Building Decree Foundation. The legal building rules are applied for KOMO certification.

KOMO Foundation

The KOMO Foundation is an independent organization and stands for independently tested quality in the construction and installation sectors. KOMO is an expert in the field of certified building products and construction processes. Products, systems and processes with a KOMO quality mark meet all safety requirements, quality requirements, regulations and legislation in construction such as the Building Decree and Soil Quality Decree. KOMO is a widely used quality brand in Dutch construction that complies with all Dutch legal building regulations.

KOMO Quality Mark

The KOMO Quality Mark is a quality mark that may only be applied if a product, process or service meets KOMO’s quality requirements. The KOMO quality mark is a recognized quality declaration that meets the applicable Dutch legal requirements. 3 Specific types of KOMO Quality Marks:

  • KOMO Finishing (for the finishing sector; for homes and non-residential buildings)
  • KOMO Instal (for the installation sector; sustainable and safe installations)
  • KOMO Klimkeur (for climbing equipment; such as a ladder or playground equipment)

KOMO Certificate

A KOMO certificate certifies that a product meets the needs of the market in terms of quality, performance, processing regulations, legal construction rules, etc. On behalf of the government, a large part of the KOMO quality declarations are recognized by the Construction Quality Foundation. There are 4 types of KOMO certificates:

  • KOMO Attest (declaration under which preconditions the construction product, building element or building system is suitable for the intended application)
  • KOMO Product (declaration that the product or service meets the technical specifications in the certificate)
  • KOMO Certificate with Product (combination of Certificate and Product)
  • KOMO Process (declaration that after the implementation process the product, building part or installation and the required process corresponds to the specifications in the declaration)

The KOMO certificates are issued by an independent third party, certified institutions. This gives users certainty and confidence in the quality of these products, systems and processes in construction.

Construction rules

Legal building regulations

The KOMOs assessment guidelines take into account the statutory building rules. All building materials, products, building parts, buildings and construction processes that are KOMO certified have been tested against the relevant statutory Dutch requirements: the Building Decree and the Soil Quality Decree.

Building Decree

Requirements of building decree regulations:

  • safety (such as structural and fire safety)
  • health
  • environment
  • usability
  • energy efficiency

Soil quality decision

Requirements regulations Soil Quality Decree:

  • construction requirements
  • environmental hygiene requirements

KOMO and sustainability and the environment

Sustainability and the environment are hot topics these days. This also applies to construction. The KOMO Foundation is therefore involved in this. Keywords KOMO sustainability and environment:

  • quality
  • reuse
  • energy and water
  • environmental performance of buildings
  • protection of soil, groundwater and surface water
  • knowledge transfer
  • health
  • reduction of failure costs

CE marking

KOMO and CE differ from each other. A CE marking only applies to construction products and construction parts. KOMO also focuses on construction processes and services. The CE marking checks whether everything meets European standards. A supplier or producer therefore does not have to adhere to the usual quality level in the Netherlands. In addition, no product specifications need to be supplied. This is completely different from KOMO. CE marking also involves limited independent testing of construction products and building parts. A KOMO certification therefore offers much more certainty about meeting the Dutch desired requirements and quality levels than a CE marking.

Benefits of KOMO

Benefits of KOMO certification:

  • clarity about the quality of products, processes, systems and services
  • guarantee for compliance with construction regulations
  • simple controls
  • Applying for a building permit takes less time
  • savings in time and costs
  • security

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