WELL Building Standard

Placeholder page for the supporting reference WELL Building Standard, part of the Examitect reading list for the ExAC.

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WELL Building Standard at a glance

WELL is the rating system the architecture and real estate industries reach for when the question is human health, not energy performance. Examitect's ExAC study plan cites the version below.

Full titleWELL Building Standard version 2 (WELL v2)
PublisherInternational WELL Building Institute (IWBI), a public benefit corporation
Third-party verifierGreen Business Certification Inc. (GBCI), the same body that administers LEED
Current versionWELL v2 (graduated from pilot in June 2020)
Earlier versionsWELL v1 (launched 2014), WELL v2 pilot (launched 2018)
LanguagesEnglish (the source standard); IWBI publishes selected translations
Primary audienceArchitects, interior designers, owners, facility managers, and consultants delivering health-focused projects worldwide
ExAC relevanceSupplementary resource on Examitect's ExAC study plan, listed under Section 3 (Sustainability and final project) for sustainable design literacy. Never listed as primary.
Where to accessPublished online by IWBI at standard.wellcertified.com. The full standard is free to read.

Why WELL matters for the ExAC

WELL is a supplementary resource on Examitect's ExAC study plan, not a primary one. It earns its place because the ExAC tests sustainable design literacy as more than energy and carbon. Health and well-being are part of the same conversation: indoor air quality, water quality, daylight and circadian lighting, acoustic comfort, biophilia, active design, and material transparency are all topics the ExAC can frame as design questions. WELL is the most-cited industry vocabulary for that side of sustainability.

For Canadian candidates, WELL also clarifies the boundary between standards that overlap on the same project. LEED and the Zero Carbon Building Standard cover environmental performance. WELL covers human outcomes. Many real projects pursue all three. Recognizing which standard owns which outcome is exactly the kind of question the ExAC can ask under Sustainable Design Literacy.

ExAC sections this reference supports

Section 1
Section 2
Section 3
Section 4

What the WELL Building Standard is

The WELL Building Standard is a performance-based rating system for the spaces people occupy. Where most building standards measure how a project performs against the environment (energy use, water use, embodied carbon, site impact), WELL measures how a project performs for the people inside it. The standard is organized into ten concepts (Air, Water, Nourishment, Light, Movement, Thermal Comfort, Sound, Materials, Mind, and Community), each containing features backed by peer-reviewed research, design guidance, and operational protocols.

IWBI launched WELL v1 in 2014, opened the WELL v2 pilot in 2018, and the IWBI Governance Council confirmed WELL v2 in June 2020 after a public comment period and a stakeholder review. Each WELL feature is held to four tenets: it must be evidence-based, verifiable, implementable, and presented for outside input. Third-party verification is administered by GBCI through documentation review and on-site performance testing.

Inside WELL v2, the ten concepts

WELL v2 is organized into ten concepts. Each concept contains a set of features that are either Preconditions (mandatory to certify) or Optimizations (point-bearing). The table below summarizes what each concept addresses at the level the ExAC can test.

WELL conceptWhat it addresses
AirIndoor air quality, source control of pollutants, ventilation effectiveness, filtration, and microbial protection.
WaterDrinking water quality, contaminant control, water management for moisture-driven hazards, and accessible water for occupants.
NourishmentAvailability of fruits and vegetables, transparency in food labelling, mindful eating environments, and food safety.
LightDaylight access, electric lighting quality, visual lighting design, and circadian lighting strategies that support sleep and alertness.
MovementActive building design, ergonomics, physical activity programming, and active transportation support.
Thermal ComfortThermal performance, individual thermal control, humidity control, and radiant thermal comfort.
SoundBackground noise control, sound isolation, reverberation, sound masking, and acoustic privacy.
MaterialsMaterial transparency, hazardous material restrictions, low-emitting products, cleaning protocols, and pest management.
MindMental health support, restorative spaces, biophilia, stress management, and access to nature.
CommunityUniversal design, accessibility, emergency preparedness, civic engagement, and inclusive workplace policies.

Across the ten concepts, WELL v2 also identifies an Innovation pathway that recognizes strategies not yet captured by a published feature. For ExAC purposes, you do not need to memorize feature numbers or point values; concept-level fluency is what the exam tests.

Key WELL terms every ExAC candidate should know

WELL has its own vocabulary. The terms below are the ones most likely to show up in a Sustainable Design Literacy question stem or answer explanation.

TermWhat it means in WELL
WELL Building Standard (WELL)A performance-based rating system for buildings, interiors, and communities focused on human health and well-being, published by IWBI.
WELL v2The current version of the standard. The WELL v2 pilot launched in 2018 and WELL v2 graduated in June 2020.
IWBIInternational WELL Building Institute. The public benefit corporation that develops and publishes WELL.
GBCIGreen Business Certification Inc. The third-party verifier for WELL features (and the same body that administers LEED certification).
WELL conceptOne of the ten thematic areas of WELL v2: Air, Water, Nourishment, Light, Movement, Thermal Comfort, Sound, Materials, Mind, Community.
WELL featureAn individual requirement inside a concept, supported by evidence and either mandatory or point-bearing.
PreconditionA WELL feature that a project must meet to earn any level of WELL Certification. Establishes the minimum health baseline.
OptimizationA WELL feature that is not required but earns points toward higher certification levels.
Performance verificationOn-site testing of WELL features by a GBCI-approved performance testing agent (air sampling, water sampling, lighting and acoustic measurements).
WELL CertificationThe certification a project earns by meeting all applicable Preconditions and earning Optimization points. Commonly cited at four levels: Bronze, Silver, Gold, Platinum.
WELL APWELL Accredited Professional. An individual credential for practitioners, separate from project certification.
Salutogenic designDesign that focuses on the conditions that create health, not only on avoiding the conditions that cause disease. WELL is often described as a salutogenic standard.

How WELL compares to other ExAC sustainability references

Sustainable Design Literacy on the ExAC pulls from several standards, and the easiest way to lose a question is to confuse which one owns which outcome. Use the table to separate them.

ReferenceWhat it's forHow WELL relates
WELL Building Standard v2Human health and well-being inside buildings, interiors, and communities.The reference on this page. Owns occupant outcomes: air, water, light, sound, movement, mind, community.
LEED v4 for Building Design and ConstructionEnvironmental performance of new buildings: site, water, energy, materials, indoor environmental quality.LEED measures the building's impact on the planet. WELL measures the building's impact on the people. Both are administered by GBCI and often pursued together.
LEED Canada for New Construction and Major RenovationsThe Canadian-adapted LEED rating system used on many Canadian projects on Examitect's study plan.Canadian LEED projects often layer WELL on top for the health features. The two ratings share a verifier (GBCI) and complementary scopes.
LEED Core Concepts GuidePlain-language introduction to LEED principles and credit categories.The best entry point for understanding LEED before reading WELL alongside it. ExAC questions often pair LEED concepts with WELL concepts in the same scenario.
Zero Carbon Building Design Standard v2Canadian standard from CAGBC focused on operational and embodied carbon performance.Zero Carbon owns carbon. WELL owns health. A project can pursue both, and the ExAC can test the boundary.
SDBC 101 (Sustainable Development of Buildings in Canada)Canadian-context primer on sustainable building development.Sets the Canadian regulatory and policy frame in which WELL is voluntary. Useful background before WELL.
Embodied Carbon: A Primer for CanadaIntroduction to embodied carbon and life-cycle assessment for Canadian buildings.Embodied carbon and material health overlap in the WELL Materials concept, but the primary focus is different. Embodied Carbon is about emissions; WELL Materials is about exposure.

How to study WELL for the ExAC

  • Read the WELL v2 introduction once at standard.wellcertified.com. It sets the vocabulary (concepts, features, Preconditions, Optimizations, performance verification) you need for every question.
  • Memorize the ten WELL concepts by name and write a one-sentence description of each. Air, Water, Nourishment, Light, Movement, Thermal Comfort, Sound, Materials, Mind, Community. That list is the spine of every WELL question.
  • Learn the Precondition versus Optimization distinction. You do not need to know which features are which. You need to know that Preconditions are mandatory and Optimizations earn points.
  • Pair WELL with LEED and Zero Carbon. The ExAC tests the boundary between environmental performance and human health. Read the LEED Core Concepts Guide and the Zero Carbon Building Standard alongside the WELL introduction so you can place a scenario in the right standard.
  • Skim the Mind and Community concepts at slightly more depth. They are the easiest WELL topics to confuse with general practice questions about biophilia, universal design, or stakeholder engagement, and they show up in scenario form.
  • Drill scenario questions for Sustainable Design Literacy. Recognition under exam pressure is the skill the ExAC actually scores; passive reading does not build it.

ExAC sections WELL supports

Examitect's ExAC study plan lists primary and supplementary resources for each category. WELL appears as supplementary in one place: Section 3, sustainable design literacy.

ExAC sectionHow WELL shows up on Examitect's study plan
Section 1
Design and analysis		Not listed. Section 1 leans on CHOP, CHING, and the cost references.
Section 2
Codes		Not listed. Section 2 is anchored by NBC 2020 and the NECB.
Section 3
Sustainability and final project		Supplementary under Sustainable Design Literacy, category 13.3 (Apply sustainable architectural design strategies). Sits alongside LEED Canada, LEED v4, the LEED Core Concepts Guide, SDBC 101, and Heating, Cooling, Lighting as supporting reading for sustainable design strategies.
Section 4
Construction and practice		Not listed. Section 4 leans on CHOP, CCDC documents, and RAIC Documents 6 and 9.

Tips for Intern Architects reading WELL

WELL is broad and easy to overstudy. If you are early in your internship under the Internship in Architecture Program (IAP) or a provincial equivalent, here is how to get ExAC value from WELL without sinking a week into feature numbers.

Tip 1, treat WELL as concept-level vocabulary. The ExAC will not ask you to recall a WELL feature number or a point value. It will ask which WELL concept owns a given scenario. Learn the ten concepts and one sentence per concept. That is the bar.

Tip 2, anchor WELL beside LEED, not opposite it. The two standards complement each other. LEED is environmental performance, WELL is human health, GBCI verifies both. Many real Canadian projects pursue WELL Gold and LEED Gold together. Memorize the split.

Tip 3, learn the Precondition versus Optimization split once. Preconditions are the mandatory baseline. Optimizations earn points toward higher certification levels. Same words, same meaning, every concept. Do not get pulled into individual feature lists.

Tip 4, give the Mind and Community concepts a second read. They are easiest to confuse with general practice and barrier-free questions. Mind covers biophilia, restorative spaces, and stress management; Community covers universal design, accessibility, and emergency preparedness. Knowing which side of that line a scenario sits on saves a question.

Tip 5, do not memorize the four certification levels' point thresholds. Knowing that WELL Certification is commonly awarded at Bronze, Silver, Gold, and Platinum is enough. Exact point thresholds are not ExAC-level detail.

Tip 6, read WELL on the IWBI site, not a printout. The online standard at standard.wellcertified.com is the source of truth and is kept current with addenda. Printouts go stale; the web version does not.

Tip 7, use WELL to balance an over-coded study habit. Section 3 questions often want a design strategy answer, not a code citation. WELL gives you the language to argue for daylight, ventilation, acoustics, biophilia, and material transparency as design decisions, not just code minima.

Common ExAC scenarios where WELL is the answer

If a question stem reads like one of these, WELL is usually the standard whose vocabulary the scenario is drawing from.

  • A schematic-design proposal must address daylight access, circadian lighting, and views to nature for an open-plan office floor plate.
  • An interior fit-up needs a strategy for indoor air quality that goes beyond NBC ventilation minimums (source control, low-emitting finishes, monitoring).
  • A workplace design brief asks for active design features (visible stairs, point-of-decision prompts, sit-to-stand workstations, active commuter infrastructure) to support occupant movement.
  • A renovation must specify acoustic performance for sound isolation, background noise, and reverberation in addition to NBC code minimums.
  • A material specification must address transparency, restricted substances, and low-emitting product criteria for finishes the occupants will touch and breathe.
  • A mental health and wellness strategy for a public-facing project asks for restorative spaces, biophilic patterns, and access to nature.
  • A project pursuing both LEED and WELL needs a clear split between the two scorecards so the design team can plan documentation and performance testing.

In each case, WELL gives you the framework. Canadian code minimums (NBC 2020 ventilation, NBC Section 3.8 accessibility, NECB lighting power density) still apply underneath; WELL is layered on top.

How Examitect reinforces WELL

WELL is a vocabulary you reach for, not a textbook you read straight through. Examitect's questions for Sustainable Design Literacy reflect that. Where a question is best resolved by a WELL concept (air quality, daylight, acoustics, biophilia, material transparency), the answer explanation names the concept, distinguishes WELL from LEED or Zero Carbon, and points back to the Canadian primary references that anchor the scenario in code.

You also get scenario-based questions across the full Section 3 reading list, full-length mock exams that mirror ExAC pacing, and free study notes for every section. Try a few sample questions first, then check pricing when you want the full bank.

WELL and ExAC FAQ

The WELL Building Standard (WELL) is a performance-based rating system for buildings, interiors, and communities that measures features supporting human health and well-being. It is published by the International WELL Building Institute (IWBI) and third-party verified by Green Business Certification Inc. (GBCI). The current version, WELL v2, graduated from pilot in June 2020 and is organized into ten concepts: Air, Water, Nourishment, Light, Movement, Thermal Comfort, Sound, Materials, Mind, and Community.

No. Examitect's ExAC study plan lists WELL Building Standard v2 as a supplementary resource only, under Section 3 (Sustainability and final project), specifically the Sustainable Design Literacy category. It is not a primary resource for any ExAC category.

WELL is published by the International WELL Building Institute (IWBI), a public benefit corporation. WELL launched in 2014 with WELL v1, the WELL v2 pilot began in 2018, and WELL v2 was confirmed by IWBI's Governance Council in June 2020. Third-party verification of WELL features is administered by Green Business Certification Inc. (GBCI), the same body that administers LEED.

WELL v2 is organized into ten concepts: Air, Water, Nourishment, Light, Movement, Thermal Comfort, Sound, Materials, Mind, and Community. Each concept contains features that are either Preconditions (mandatory to earn certification) or Optimizations (point-bearing). Together they describe how the built environment can support human health and well-being.

LEED measures environmental performance: energy, water, materials, and site impact. WELL measures human health and well-being inside the building: air quality, water quality, light, movement, thermal comfort, sound, materials, mind, and community. They share a verifier (GBCI) and many projects pursue both certifications together. On Examitect's ExAC study plan, LEED Canada, LEED v4 for Building Design and Construction, and the LEED Core Concepts Guide all appear alongside WELL as supplementary references for sustainable design literacy in Section 3.

No. The ExAC does not ask you to recite WELL feature numbers or point values. What you need is concept-level fluency: what each of the ten WELL concepts addresses, the difference between a Precondition and an Optimization, the difference between WELL and LEED, and where WELL fits in a sustainable design strategy. Examitect's questions for Sustainable Design Literacy test that level of recognition.

Examitect's ExAC study plan points to WELL Building Standard V2. That is the version IWBI graduated in June 2020 and the version in active use today. Older WELL v1 content has been folded into WELL v2.

WELL v2 is published online by IWBI at standard.wellcertified.com. The full standard, including every Precondition and Optimization for each of the ten concepts, is free to read. You do not need to register for a project or pay for access to study the content for the ExAC.

Keep exploring

Other ExAC reference books.

WELL is one of the supplementary references on Examitect's ExAC study plan. The primary references below carry most of the exam load.

CHING

Building Construction Illustrated. The primary visual reference for assemblies, materials, and detailing across Sections 1 and 3.

CHOP

Canadian Handbook of Practice. The RAIC's reference for architectural practice in Canada and the spine of Section 4.

NBC 2020

National Building Code of Canada. The primary reference for every category in ExAC Section 2.

NECB

National Energy Code of Canada for Buildings. Supports envelope and energy questions in Section 2.

RSMeans

Construction cost data. Used for elemental estimating and cost-management questions in Section 1.

Supporting references

The extended reading list of supplementary references that show up across the ExAC reading list.