The largest brokerages in Newmarket
9 offices, 744 agents counted at the 2026-08-07 scan. Right at Home Realty - Newmarket leads with 278 agents — 37.4% of the tracked roster, ahead of CENTURY 21 Heritage Group Ltd. Brokerage at 141. The local market is fairly concentrated (top three hold 68.7%).
Every office we track in Newmarket
| # | Office | Network | Agents | Share |
|---|---|---|---|---|
| 1 | Right at Home Realty - Newmarket | Right at Home | 278 | 37.4% |
| 2 | CENTURY 21 Heritage Group Ltd. Brokerage | Century 21 | 141 | 19% |
| 3 | REMAX Realtron Realty Inc | RE/MAX | 92 | 12.4% |
| 4 | REMAX Hallmark York Group Realty Ltd | RE/MAX | 85 | 11.4% |
| 5 | Coldwell Banker The Real Estate Centre, Brokerage | Coldwell Banker | 71 | 9.5% |
| 6 | Royal LePage RCR Realty | Royal LePage | 69 | 9.3% |
| 7 | Sutton Group Kings Cross Inc., Brokerage | Sutton | 4 | 0.5% |
| 8 | REMAX Realtron Turnkey Realty | RE/MAX | 3 | 0.4% |
| 9 | Sutton Group - Admiral Realty Inc., Brokerage | Sutton | 1 | 0.1% |
Offices with fewer than 10 agents appear in this table but don't get their own page. Across the 463 Newmarket agents whose sites we check, 54.4% list a website of their own (national 56.7%).
Network mix in Newmarket
Coverage: these are the 6 national networks we scrape — about 44.4% of Canadian REALTORS® nationally. Independents and brokerages outside those networks aren't counted, so read this as the largest offices among the networks we track in Newmarket. Methodology →
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