Who is the big 4 in real estate?
Asked "Who is the big 4 in real estate?", ChatGPT, Copilot, Gemini, Google AI Mode and Perplexity named 6 distinct names across 5 answers on September 9, 2026, and 4 of them in two or more answers, and all 5 engines agreed on JLL, the only name every engine named.
4 of 6 names confirmed · named in 2 or more of 5 answers · asked September 9, 2026 · 5 engines
The Big 4 in real estate are CBRE, JLL, Cushman & Wakefield, and Colliers International, which are the four largest global commercial real estate services firms. They dominate many commercial real estate activities, including brokerage, property management, valuation, and advisory services. These firms operate worldwide and handle a large share of institutional and corporate real estate transactions.
- 1JLLnamed in 5 of 5 answers
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- 2Cushman & Wakefieldnamed in 5 of 5 answers
- 3CBREnamed in 4 of 5 answers
- 4Colliers Internationalnamed in 4 of 5 answers
- 5CBRE Groupnamed in 1 of 5 answersone answer
- 6Colliersnamed in 1 of 5 answersone answer
The full measurement
- The position each of the 5 engines gave all 6 names.
- How many of the 5 answers named each of them.
- 23 sampled observations behind this ranking, and where the engines disagree.
- Fan-out — the query each engine actually searched.
- Every citation, and the sources nobody cited.