WCAG

WCAG — the Web Content Accessibility Guidelines — is the W3C’s international standard for making web content usable by people with disabilities. It is written as testable success criteria organized under four principles (content must be perceivable, operable, understandable, and robust) and graded into three conformance levels: A, AA, and AAA. When a law, a contract, or an RFP demands an “accessible website,” WCAG is almost always the yardstick it means.

Versions and levels, briefly

WCAG 2.0 arrived in 2008; 2.1 (2018) added criteria for mobile and low-vision use; 2.2 (2023) is the current release. The versions are backward-compatible — building to a newer one doesn’t break conformance with an older one. Level AA is the working standard worldwide: strict enough to matter, achievable enough to legislate. This layering is why “WCAG compliant” alone is an incomplete claim — the honest statement names version and level, like “WCAG 2.0 AA.”

The legal hook in Canada

In Ontario, AODA’s web standard requires designated public-sector organizations and private organizations with 50 or more employees to conform to WCAG 2.0 Level AA — a deadline that passed on January 1, 2021. Whether a given brokerage is actually captured turns on how the employee threshold counts independent-contractor agents — the analysis lives in AODA compliance for real estate websites. Federally regulated organizations face their own accessibility regime, and human-rights law’s duty to accommodate applies at any size — so the standard’s reach in practice is wider than any single statute.

What it means for a listing website

Real estate sites concentrate a handful of WCAG failure modes: listing photos without alternative text, map-only search with no list equivalent, white text over hero imagery that fails contrast, form fields labelled only by placeholder text, and photo carousels that a keyboard can’t operate. Every one of them is a template-level property, which is why platform choice largely sets your conformance baseline before you write a word — the buying criteria are in AODA-compliant realtor websites. Beyond compliance, the overlap between accessible markup and what search engines parse cleanly means the work pays twice: the same structure that serves a screen reader serves a crawler.