Three Types of Provider

Companies looking for accessibility documentation typically encounter three options: automated scanners that cover roughly 30–40% of WCAG criteria, traditional consultancies where the same person audits and signs off, and managed audits with independent verification, assistive technology testing, and a finished VPAT included.

The table below breaks down how each approach compares across the attributes that matter most to procurement teams.

What Independent Verification Means

Harbor audits are performed under the DHS Trusted Tester certification — the U.S. federal government’s own Section 508 test methodology. The final conformance report (VPAT/ACR) is then signed by an independent reviewer holding IAAP credentials (International Association of Accessibility Professionals), the industry standard for demonstrating accessibility expertise — similar to how a CPA certification works in accounting. Two credentials, two sets of eyes.

Harbor’s process separates the audit work from the final review. The team that tests the product is not the same person who signs the report. This independent verification is what gives the deliverable weight in procurement — it’s the difference between a self-assessment and a credentialed evaluation.

Every Harbor engagement is also backed by Errors & Omissions insurance, which means the company stands behind the accuracy of the work.

What Automated Tools Cannot Detect

Automated scanners check code patterns — missing alt attributes, insufficient color contrast, empty form labels. But a significant portion of WCAG criteria require human judgment. These categories of issues only surface through manual testing with assistive technology:

  • Keyboard traps — a user can tab into a component (a modal, a dropdown, a date picker) but cannot tab out without using a mouse
  • Incorrect reading order — the visual layout shows content in one sequence, but a screen reader announces it in a different order because of DOM structure
  • Misleading alt text — an image has alt text (so scanners pass it), but the description does not match what the image actually conveys
  • Missing focus management — after a dynamic action like a form submission or modal open, focus is not moved to the result, leaving keyboard users stranded
  • Inaccessible custom controls — a dropdown, toggle, or slider works with a mouse but has no keyboard support, no ARIA roles, and no state announcements for assistive technology

Automated tools typically cover about 30–40% of WCAG success criteria. The remaining 60–70% require a person using the product with a keyboard and screen reader — that is what Harbor’s manual testing provides.

Side-by-Side Comparison

Same product, three different approaches. Here’s what each type of provider delivers.

Comparison of automated-only tools, traditional consultancies, and Harbor across nine engagement attributes.
AttributeAutomated-OnlyTraditional FirmHarbor Accessibility Co.
What They TestCode patterns onlyCode + limited manual checksCode + keyboard + screen reader + manual review
WCAG Coverage~30–40% of criteriaVaries by firmAll applicable criteria evaluated
Report AuthorityNo one (auto-generated)Same consultant who auditedIndependent IAAP-credentialed reviewer
Assistive Technology TestingNot includedSometimes includedIncluded in every engagement
Accepted by ProcurementOften rejectedGenerally acceptedDesigned for procurement review
Follow-Up ReviewsRe-run the scanBilled separatelyUp to 3 included (5 on Enterprise)
TimelineMinutes8–12 weeksTarget 60 days*
Typical Cost$0–$2,000$6,500–$15,000+Starting at $7,500 flat
E&O InsuranceNoVariesIncluded

Automated-Only Tools

What They Test
Code patterns only
WCAG Coverage
~30–40% of criteria
Report Authority
No one (auto-generated)
Assistive Technology Testing
Not included
Accepted by Procurement
Often rejected
Follow-Up Reviews
Re-run the scan
Timeline
Minutes
Typical Cost
$0–$2,000
E&O Insurance
No

Traditional Firms

What They Test
Code + limited manual checks
WCAG Coverage
Varies by firm
Report Authority
Same consultant who audited
Assistive Technology Testing
Sometimes included
Accepted by Procurement
Generally accepted
Follow-Up Reviews
Billed separately
Timeline
8–12 weeks
Typical Cost
$6,500–$15,000+
E&O Insurance
Varies

Harbor

What They Test
Code + keyboard + screen reader + manual review
WCAG Coverage
All applicable criteria evaluated
Report Authority
Independent IAAP-credentialed reviewer
Assistive Technology Testing
Included in every engagement
Accepted by Procurement
Designed for procurement review
Follow-Up Reviews
Up to 3 included (5 on Enterprise)
Timeline
Target 60 days*
Typical Cost
Starting at $7,500 flat
E&O Insurance
Included

See the Difference for Yourself

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*60-day timeline is typical for Standard and Professional tiers. Competitor pricing reflects typical market ranges.