Finding ·
Home builders — Greater Toronto, Ontario
 ·
November 11, 2026

Mattamy Homes is the GTA home builder AI assistants name most often

Mattamy Homes has the highest share (42.4 of 100) across 144 answers from ChatGPT, Gemini and Google AI Mode in the first reading, November 2026; 223 of 277 eligible builders were never named.

Captured 3–5 November 2026 (UTC), runs 1–3

Evidence

In the first reading of the Home builders · Greater Toronto, Ontario ranking, the three builders with the highest share were:

  1. Mattamy Homes: 42.4, named in 85 of 144 answers
  2. Tridel: 36.9, named in 69 of 144 answers
  3. Great Gulf Homes: 34.5, named in 84 of 144 answers
  • 223 of 277 eligible builders were never named.
  • 54 builders were named at least once; 25 were named in all three runs.
  • The assistants differ most on Tridel: ChatGPT 29.4, Gemini 36.3, Google AI Mode 45.1.

The full order is on the ranking page, and every figure here can be checked in the data files.

How it was measured

Each of 16 questions a buyer would ask was put to ChatGPT, Gemini and Google AI Mode once a day on 3, 4 and 5 November 2026 (UTC), with no account history. A business's share is the position-weighted share of the 144 scored answers that name it, from 0 to 100. Names were matched to the eligible list by a person, and the reading was signed off by a responsible analyst before publication. The eligible list comes from the HCRA Ontario Builder Directory: GTA licensees grouped by umbrella entity, with at least 100 possessions in 10 years. See the methodology.

Limits

  • The share measures how often a business is named in AI answers. It does not measure the quality of the business.
  • One reading: three runs inside one capture window. Answers change over time; the next reading will show movement.
  • Answer text and the sources each assistant cited are not published.
  • Copilot run 1 was captured but is not scored (provider outage from 3 November 2026); Perplexity was withdrawn by the capture service. Scored assistants: ChatGPT, Gemini, Google AI Mode.

Corrections

Remington Homes and The Remington Group are licences of one company and are scored as one (correction, 5 November 2026).

Cite this finding

The Trust Index. "Mattamy Homes is the GTA home builder AI assistants name most often." Home builders · Greater Toronto, Ontario, November 2026. LittPro Inc. https://thetrustindex.ai/findings/ca-home-builders-greater-toronto-2026-11

© 2026 LittPro Inc. This finding and its charts are published under CC BY 4.0. Reuse them freely with credit: "Source: The Trust Index (thetrustindex.ai)" and a link to this page. The method (CC BY-ND 4.0), scoring, data files and the Trust Index™ name are not covered by this licence; see using our findings.

How to use and cite our findingsSee the full method
Trust Index

The Trust Index measures which businesses AI assistants recommend. Published by LittPro Inc. No business can pay to be tested, listed, scored, moved or removed.

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© 2026 LittPro Inc. · Trust Index™ is a trademark of LittPro Inc. · Readings CC BY 4.0 · Methodology CC BY-ND 4.0