Answer ·

How much does WCAG 2.2 AA conformance cost to retrofit?

£1,800 — £8,000 depending on plugin sprawl. Where the cost lives.

£1,800 — £8,000 depending on plugin sprawl. Where the cost lives.

Cost drivers, ranked

  1. Plugin sprawl. Each form plugin, each slider, each pop-up is its own a11y surface. A site with 8 user-facing plugins costs 3× a site with 2.
  2. Locale count. Translated content needs separate manual passes for SR pronunciation, direction, and language attribute correctness.
  3. Custom blocks. Each custom block needs keyboard testing, focus management, and SR labelling.
  4. Brand contrast debt. If the brand palette doesn’t pass AA, you’re remediating brand decisions, not code.

What’s in the £1,800 floor

Audit + sample remediation patch on three high-traffic templates. axe-core CI workflow set up. Sample accessibility statement page. The buyer’s team implements the rest from the report.

What’s in the £8,000 ceiling

Above plus the full remediation, refactoring the brand palette to AA, replacing two to four user-facing plugins with theme code, and full NVDA + VoiceOver + keyboard documentation per template.

The Accessibility Sprint (WCAG / EAA) covers the £4,500 mid-band fixed-price option.