The WELL Building Standard, a certification mark of the International WELL Building Institute, supports full building certification as well as separate ratings focused on narrower subject areas. These are different kinds of achievement rather than different names for the same process: full certification is tiered, includes required on-site performance verification and operates on a three-year recertification cycle, while a rating is a separate single-subject programme renewed annually.
Full certification examines a project through the standard's broad framework. It combines mandatory requirements, elective scored work, documentation review and physical verification on site. The outcome is expressed through a tiered certification level rather than as a single-subject rating.
A rating narrows the scope to a defined theme. It does not represent the full breadth of certification and should not be described as a smaller certification level. Its annual structure is intended to maintain attention on the particular subject covered by that rating.
The distinction is therefore one of scope and architecture. Full certification brings many health and wellbeing subjects into one project-wide process, whereas a rating isolates a narrower field for a separate achievement. Either route may be relevant to an organisation, but the terms should not be used interchangeably.
Full certification has four award levels. The tier records the project's achievement within the certification scoring system, subject to all applicable mandatory requirements. The scoring thresholds and point controls are explained separately on the certification-level page rather than repeated here.
A rating does not sit below Bronze or between the certification tiers. It belongs to another programme route. Describing a rating as an entry-level form of full certification can mislead readers because it suggests a continuous ladder where the scheme instead provides structurally separate achievements.
A project may choose a rating because its immediate objective is concentrated in one area, or it may pursue a rating alongside a broader programme. That choice does not convert the rating into full certification. The stated achievement should continue to identify the correct route.
Full certification is performance-based and requires on-site testing. Physical measurements are taken in the completed and operating environment for relevant indoor conditions, alongside documentation review and other forms of verification. The purpose is to test actual performance rather than relying only on design intent or written policy.
This on-site stage is distinct from ordinary design calculations and conventional building commissioning. Drawings, specifications and commissioning records may show that systems were designed and set up in a particular way, while physical verification examines conditions in the space through the scheme's prescribed process.
For project programming, the distinction is significant. Testing depends on a building that is sufficiently complete, operational and representative for the required measurements. Delays, incomplete systems, temporary operating conditions or unresolved fit-out work can therefore affect the certification programme even where the documentation is substantially prepared.
A rating may use documentation, review, reporting or subject-specific verification according to its own rules. It should not be assumed that every rating follows the same testing route as full certification, nor that achievement of a rating demonstrates that the entire building has passed the full certification performance-verification process.
Full certification is valid for three years, and three years is the maximum interval before recertification. It should not be treated as a target period during which the building can wait before considering performance. The building must continue to be managed, and the recertification process is intended to verify continued achievement.
A rating is renewed annually. The shorter cycle reflects its status as a current, subject-focused achievement. Renewal requires the project to revisit the rating route and address relevant changes or continuing evidence rather than relying indefinitely on the original review.
These cycles should not be confused. An annual rating renewal does not extend the validity of full certification, and the three-year certification period does not remove the annual renewal requirement for a separate rating. Where a project holds both, each programme needs its own calendar, evidence responsibilities and governance.
The practical lesson is that achievement creates continuing obligations. Certification and ratings are not permanent labels detached from building operation. Their differing cycles require facilities teams and organisational owners to understand what must be maintained, recorded and revisited under each route.
Full certification is broad by design. It draws together environmental conditions, design choices, operational practices and organisational considerations across the standard's overall structure. The result communicates achievement across that multi-subject framework.
A rating is concentrated by design. It allows a project or organisation to address a defined subject without representing that the entire certification framework has been completed. That narrower scope can make a rating suitable for a particular operational priority, portfolio initiative or staged internal programme, but the scope should always be stated accurately.
Breadth is not automatically better for every purpose, and concentration is not automatically weaker. They answer different questions. Full certification asks whether the project has achieved the scheme's broad certification requirements and a tiered score, while a rating asks whether the project has achieved the requirements of a particular annual rating.
The risk arises when the narrower achievement is communicated without its scope. A reader may incorrectly assume that a single-subject rating covers all aspects of healthy-building certification. Clear naming and careful explanatory text prevent that overstatement.
A full certification programme needs coordination across multiple disciplines and operating functions. The project manager must connect design information, construction completion, documentation, on-site testing and the transition into facilities management. The three-year recertification requirement should also be visible in long-term operational planning.
A rating programme can have a narrower team, but it still needs an accountable owner and an annual renewal process. Because its focus is more concentrated, the relevant policies, records, measurements or operational controls may sit with a particular department rather than the entire development team.
Where both routes are pursued, shared evidence may exist, but equivalence should not be assumed. The project should record which submission, review or verification activity belongs to which programme and should use the current scheme guidance when determining whether evidence can support both.
The neighbouring pages explain the scheme itself, the ten concepts, preconditions and optimisations, and certification scoring; those subjects are intentionally not restated here.
Public statements should distinguish clearly between a certified project and a project holding a rating. The words describe different achievements, scopes and renewal cycles. A rating should not be shortened to certification, and certification should not be described as merely an annual rating.
The same care applies to physical verification. Full certification includes required on-site testing, but that statement should not be expanded into a claim that every aspect of the building has been measured or that future conditions are guaranteed. Verification occurs within the scheme's defined scope and procedures.
This website is independent, holds no status under the scheme and has no role in assessment or award decisions. It does not award either certification or ratings. Current programme rules and decisions remain with International WELL Building Institute pbc and the review arrangements established under its programmes.
An independent resource. WELL is a certification mark of the International WELL Building Institute pbc. No affiliation, endorsement or accreditation.
No. A rating is a separate, narrower achievement focused on a defined subject. Full certification covers the broader standard, includes tiered levels and requires the full certification process.
No. Ratings do not sit below the certification tiers. They are structurally separate programmes and should be identified by their own scope rather than described as an entry-level certification award.
Yes. Full certification is performance-based and requires on-site testing for relevant conditions, together with documentation review and other verification. The measurements are carried out within the scheme's prescribed performance-verification process.
Full certification is valid for three years, with three years being the maximum interval before recertification. The interval is not a target for delaying management or monitoring; the building must continue to operate in accordance with the achieved requirements.
A rating is renewed annually. The annual cycle is separate from the recertification cycle for full certification, so a project holding both must manage each timetable independently.
Yes, the programme routes can exist alongside each other where their respective requirements are met. Holding a rating does not automatically confer full certification, and holding full certification does not remove the annual renewal obligation for a separate rating.
This site is an independent information resource. It is not affiliated with, endorsed by, accredited by or authorised by the International WELL Building Institute pbc, which owns the WELL certification mark, and it is not a certification body, an assessor, a performance testing provider or a scheme partner. Nothing on this page can certify, assess or award anything under the scheme, and nothing here is a substitute for the scheme's own published documentation. Requirements are summarised factually rather than reproduced; where a numeric threshold is stated it is drawn from documentation the scheme's owner publishes openly, and the specific figure is cited rather than the table it sits in. Certification under the scheme is voluntary and is not required by any authority in the United Arab Emirates.