Contributed by MiTek New Zealand
Ensuring compliance with the New Zealand Building Code (NZBC) is a core part of delivering a quality build. For builders, designers and merchants, understanding the difference between CodeMark certification and product appraisals can make the building consent process smoother and more predictable.
Both CodeMark certification and product appraisals are recognised compliance pathways in New Zealand. While they share a common goal — demonstrating that a product or system meets NZBC requirements — there are key differences in how they are assessed, accepted and used on the ground.
The Role of CodeMark and Product Appraisals
CodeMark is a government-backed product certification scheme. When a product is CodeMark certified, Building Consent Authorities (BCAs) must accept it as demonstrating compliance with the NZBC. In contrast, product appraisals, such as those issued by BRANZ, provide an independent technical assessment. Although widely respected, appraisals do not carry the same legal standing as CodeMark and may require additional supporting information for acceptance by BCAs.
Why MiTek Supports CodeMark Certification
MiTek has chosen to prioritise CodeMark certification for key structural products used across the building industry. This decision is based on the assurance it provides to designers, builders, specifiers and merchants. CodeMark certification helps reduce uncertainty in the consent process and supports confidence in product compliance.
MiTek’s CodeMark-certified products are manufactured in New Zealand using locally sourced materials. This supports consistent quality, while reducing risks associated with variable overseas supply chains.
Comparing the Two Pathways
1. Legal Standing
- CodeMark: Must be accepted by BCAs as evidence of compliance. It has the same legal status as an Acceptable Solution or Verification Method.
- Product Appraisal: Provides a strong technical opinion but may require further evidence. Final acceptance is at the discretion of the BCA.
2. Level of Assurance
- CodeMark: Offers high assurance through independent certification and ongoing audits.
- Product Appraisal: A respected technical assessment, valued for its detail, but not automatically accepted.
3. Assessment Scope
- CodeMark: Includes a full evaluation of NZBC compliance, along with a review of manufacturing and quality assurance processes.
- Product Appraisal: Focuses on material performance, installation methods and long-term durability, but does not include regular auditing.
4. Recognition and Use
- CodeMark: Recognised across the industry as a clear compliance pathway, especially useful for easing the consent process.
- Product Appraisal: Frequently used to support engineering and design decisions, particularly in more complex or bespoke projects.
Facts at a glance
Choosing the Right Path for Your Build
Both CodeMark and product appraisals play important roles in the New Zealand building landscape. The right choice depends on the project, the product, and the level of regulatory assurance required.
For builders looking to reduce delays in consent, a CodeMark-certified product can streamline approvals. For more specialised products or systems, an appraisal may offer valuable technical insight to support design and specification.
MiTek’s Approach
MiTek continues to invest in CodeMark certification for selected products to offer a high level of confidence to its customers. This approach supports a smoother compliance process and aligns with MiTek’s commitment to quality and local manufacturing.
By understanding the role of both CodeMark and product appraisals, builders and specifiers are better placed to make informed choices — and ultimately, to deliver better outcomes for clients.