Century 21 vs Keller Williams: units, growth & AI adoption

What actually separates them

Keller Williams leads Century 21 by 6 points overall (66 vs 60), and the gap is concentrated rather than spread. The widest single divergence is training & support AI, where Keller Williams is 10 points ahead.

Training and support AI carries 15% — the lightest weight, because it is the pillar most easily overstated and the one with the least verifiable outcome data.

Scale does not explain the gap

Century 21 is the larger system (14,000 offices against 1,100 offices) and the lower-scoring one. This inversion is common in our Index and it is the clearest evidence that unit count does not produce AI maturity.

Systems that grew through decentralized, franchisee-owned technology stacks accumulated fragmented data, and every additional unit made consolidation harder rather than easier. Scale becomes an advantage only after a common data layer exists — and an obstacle before it does.

A composition pattern worth noting

Century 21 (marketing 70 vs data 58) carries marketing AI well ahead of data infrastructure. Across our panel this shape recurs in the middle band of the Index and tends to precede a plateau: the tools that work without system-wide data have been bought, and the next step requires the consolidation work that was skipped.

This is a caution about the likely trajectory, not a judgement on current capability. The marketing capability is real; what is unproven is whether it extends.

Sector context

Both compete in Real Estate, which averages 65/100 across the 3 systems we track in it, against an industry average of 63. Keller Williams sits above that sector average; the other does not.

Same-sector comparison is the one that carries real weight. These two are competing for the same operators and the same customers, so a durable capability gap between them is a competitive fact rather than a statistical curiosity.

What this comparison does not tell you

Century 21 ranks #29 and Keller Williams #21 of the 50 systems in the Index. That ordering describes depth of AI deployment and nothing else.

We publish no correlation between AI score and franchisee profitability, because no verified dataset supports one. Unit economics, franchisee satisfaction, territory terms and the disclosure document decide a franchise purchase; AI maturity is a tiebreaker between otherwise comparable options.

Scores describe system-level capability. What reaches any individual unit depends on that system's rollout, and in large networks the variation between units is wide.