Supporting Reference

WELL Building Standard for the ExAC

WELL Building Standard version 2 (WELL v2), published by the International WELL Building Institute (IWBI), is the performance-based rating system for buildings and interiors focused on human health and well-being. On Examitect's ExAC study plan, WELL v2 is a supplementary reference under Section 3 for sustainable design literacy.

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WELL Building Standard overview

WELL at a glance

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 June 2020)
Earlier versionsWELL v1 (launched 2014), WELL v2 pilot (launched 2018)
LanguagesEnglish (source standard); IWBI publishes selected translations
Primary audienceArchitects, interior designers, owners, facility managers, and consultants on health-focused projects worldwide
ExAC relevanceSupplementary under Section 3 (Sustainability and final project), sustainable design literacy. Not a primary reference for any ExAC category.
Where to accessFree online at standard.wellcertified.com. No registration or project account required.

Why WELL matters for the ExAC

WELL is the rating system you reach for when a design question is about human health, not energy performance. Where most building standards measure a project's impact on the environment (energy, water, carbon, site), WELL measures the environment's impact on the people inside it. Each of its ten concepts (Air, Water, Nourishment, Light, Movement, Thermal Comfort, Sound, Materials, Mind, Community) is backed by peer-reviewed research and tested through performance verification by GBCI.

WELL appears as a supplementary reference on Examitect's ExAC study plan, not a primary one. It earns its place because Section 3 tests sustainable design literacy as more than energy and carbon. Indoor air quality, daylighting and circadian lighting, acoustic comfort, biophilic design, active design strategies, and material transparency are all topics the ExAC can frame as design questions, and WELL is the most-cited vocabulary for that side of sustainability.

For Canadian candidates, WELL also clarifies the boundary between overlapping standards on the same project. LEED and the Zero Carbon Building Standard cover environmental performance. WELL covers human outcomes. Recognizing which standard owns which outcome is exactly the kind of question the ExAC asks under Sustainable Design Literacy.

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 one sentence per concept. That list is the spine of every WELL question the ExAC can ask.
  • Learn the Precondition versus Optimization split once. Preconditions are mandatory; Optimizations earn points. Same structure, every concept.
  • Pair WELL with the LEED Core Concepts Guide and the Zero Carbon Building Standard so you can place a scenario in the right standard under exam pressure.
  • Give Mind and Community a second read; they are easiest to confuse with general practice or accessibility questions.
  • Drill scenario questions for Sustainable Design Literacy. Recognition under exam pressure is the skill the ExAC scores; passive reading alone won't build it.

ExAC sections WELL supports

  1. Section 3

    WELL is supplementary under Sustainable Design Literacy (category 13.3: Apply sustainable architectural design strategies). It sits alongside LEED Canada, LEED v4, the LEED Core Concepts Guide, SDCB 101, and Heating, Cooling, Lighting as supporting reading for sustainable design strategies.

WELL is not listed on Examitect's ExAC study plan for Section 1 (Design and analysis), Section 2 (Codes), or Section 4 (Construction and practice).

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 tests. Across all ten concepts, WELL v2 also identifies an Innovation pathway for strategies not yet captured by a published feature; that pathway does not come up in ExAC questions.

WELL conceptWhat it addresses for the ExAC
AirIndoor air quality, source control of pollutants, ventilation effectiveness, filtration, and microbial protection. Goes beyond NBC Part 6 ventilation minimums.
WaterDrinking water quality, contaminant control, water management for moisture-driven hazards, and accessible hydration for occupants.
NourishmentAvailability of fruits and vegetables, transparency in food labelling, mindful eating environments, and food safety in occupied spaces.
LightDaylight access, electric lighting quality, visual lighting design, and circadian lighting strategies that support sleep and occupant alertness.
MovementActive building design, ergonomics, physical activity programming, visible stair placement, and active transportation support.
Thermal ComfortThermal performance standards, individual thermal control, humidity control, and radiant thermal comfort beyond code minimums.
SoundBackground noise levels, sound isolation between spaces, reverberation control, sound masking, and acoustic privacy for occupants.
MaterialsMaterial transparency, hazardous material restrictions, low-emitting products, cleaning protocols, and integrated pest management.
MindMental health support, restorative spaces, biophilic design patterns, stress management strategies, and access to nature views.
CommunityUniversal design, accessibility beyond code minimums, emergency preparedness, civic engagement, and inclusive workplace policies.

For ExAC purposes, concept-level fluency is what the exam tests. You do not need to recall feature numbers, Precondition counts per concept, or Optimization point values.

Key WELL terms every ExAC candidate should know

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

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. Pilot launched 2018; confirmed June 2020 by the IWBI Governance Council after public comment and stakeholder review.
IWBIInternational WELL Building Institute. The public benefit corporation that develops and publishes WELL.
GBCIGreen Business Certification Inc. 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 (Precondition) or point-bearing (Optimization).
PreconditionA WELL feature a project must satisfy 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. Lets projects tailor their WELL strategy to occupant priorities.
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 accumulating Optimization points. Commonly awarded at four levels: Bronze, Silver, Gold, and 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.

Tips for Intern Architects reading WELL

WELL is broad and easy to overstudy. If you are working 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 for this reference.

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. Knowing the split is what the ExAC tests.

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 Mind and Community a second read. They are easiest to confuse with general practice and barrier-free design 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, skip the certification level 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 and memorizing them costs you study time better spent on scenarios.

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 rather than 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. Canadian code minimums (NBC 2020 ventilation, NBC Section 3.8 accessibility, NECB lighting power density) still apply underneath; WELL is layered on top as a voluntary performance standard.

  • A schematic-design proposal must address daylight access, circadian lighting, and views to nature for an open-plan office floor plate. Which standard provides the framework for those occupant health strategies?
  • An interior fit-up needs a strategy for indoor air quality that goes beyond NBC ventilation minimums: source control, low-emitting finishes, air quality monitoring. Which rating system owns that scope?
  • A workplace design brief asks for active design features (visible stairs, point-of-decision signage, sit-to-stand workstations, active commuter infrastructure) to support occupant movement. WELL Movement is the answer.
  • A renovation must specify acoustic performance for sound isolation, background noise, and reverberation in addition to NBC code minimums. WELL Sound provides the framework.
  • A material specification must address chemical transparency, restricted substances, and low-emitting product criteria for finishes occupants will touch and breathe over the long term.
  • A mental health and wellness strategy for a public-facing project asks for restorative spaces, biophilic patterns, and access to nature views. WELL Mind and Community are the answer.
  • A project pursuing both LEED and WELL needs a clear split between the two scorecards so the design team can plan documentation, performance testing, and commissioning. The ExAC can ask where the boundary lies.

How WELL compares to other ExAC sustainability references

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

ReferenceWhat it's forHow it relates to WELL
WELL Building Standard v2 Human health and well-being inside buildings, interiors, and communities. Ten concepts: Air, Water, Nourishment, Light, Movement, Thermal Comfort, Sound, Materials, Mind, Community. This page. Owns the occupant health and wellness outcomes on a project.
LEED v4 for Building Design and Construction Environmental performance of new buildings: sustainable sites, water efficiency, 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 Renovations The Canadian-adapted LEED rating system used on many Canadian projects listed on Examitect's ExAC study plan. Canadian LEED projects often layer WELL on top for occupant health features. The two ratings share a verifier (GBCI) and complementary scopes.
LEED Core Concepts Guide Plain-language introduction to LEED principles and credit categories. The best LEED entry point before pairing with WELL. ExAC questions often pair LEED concepts with WELL concepts in the same scenario. Read both introductions together.
Zero Carbon Building Design Standard v2 Canadian 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 where the boundary falls.
SDCB 101 (Sustainable Development of Buildings in Canada) Canadian-context primer on sustainable building development and the regulatory and policy frame for green buildings. Sets the Canadian policy context in which WELL is voluntary. Useful background before studying WELL.
Embodied Carbon: A Primer for Canada Introduction to embodied carbon and life-cycle assessment for Canadian buildings. Embodied carbon and material health overlap at the WELL Materials concept, but the primary focus differs: Embodied Carbon is about emissions; WELL Materials is about occupant exposure.

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 to gauge where you stand, then check pricing when you want the full question bank for all four sections.

FAQ

WELL 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 reference only, under Section 3 (Sustainability and final project), specifically the Sustainable Design Literacy category. It is not a primary reference 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 six 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.

Yardsticks for Costing

Canadian construction cost reference for preliminary estimates. Paired with RSMeans for Section 1 cost management.