The largest brokerages in Newmarket
18 offices, 773 agents counted at the 2026-11-02 scan. Some agents here are counted as of an earlier read: realtor.ca, last read August 18, 2026. Right at Home Realty - Newmarket leads with 261 agents — 33.8% of the tracked roster, ahead of CENTURY 21 Heritage Group Ltd. Brokerage at 141. The local market is fairly concentrated (top three hold 65.2%).
The top 10 at a glance
Agents on the roster at the 2026-11-02 scan; percentages are share of all 773 tracked in Newmarket.
- Right at Home Realty - Newmarket 261 33.8%
- CENTURY 21 Heritage Group Ltd. Brokerage 141 18.2%
- REMAX Realtron Realty Inc 102 13.2%
- REMAX Hallmark York Group Realty Ltd 89 11.5%
- Royal LePage RCR Realty 73 9.4%
- Coldwell Banker The Real Estate Centre, Brokerage 72 9.3%
- Main Street Realty Ltd. 12 1.6%
- REMAX Realtron Turnkey Realty 4 0.5%
- Sutton Group Kings Cross Inc., Brokerage 4 0.5%
- Keller Williams Realty Centres 3 0.4%
Bar length is relative to the largest row; percentages are share of all 773 tracked agents. The 10 shown account for 98.4% of them — the remaining 12 sit with other offices. Download this chart as an image ↓
Every office we track in Newmarket
| # | Office | Network | Agents | Share |
|---|---|---|---|---|
| 1 | Right at Home Realty - Newmarket | Right at Home | 261 | 33.8% |
| 2 | CENTURY 21 Heritage Group Ltd. Brokerage | Century 21 | 141 | 18.2% |
| 3 | REMAX Realtron Realty Inc | RE/MAX | 102 | 13.2% |
| 4 | REMAX Hallmark York Group Realty Ltd | RE/MAX | 89 | 11.5% |
| 5 | Royal LePage RCR Realty | Royal LePage | 73 | 9.5% |
| 6 | Coldwell Banker The Real Estate Centre, Brokerage | Coldwell Banker | 72 | 9.3% |
| 7 | Main Street Realty Ltd. | realtor.ca | 12 | 1.6% |
| 8 | REMAX Realtron Turnkey Realty | RE/MAX | 4 | 0.5% |
| 9 | Sutton Group Kings Cross Inc., Brokerage | Sutton | 4 | 0.5% |
| 10 | Keller Williams Realty Centres | realtor.ca | 3 | 0.4% |
| 11 | Real Broker Ontario Ltd. | realtor.ca | 3 | 0.4% |
| 12 | Exp Realty (branch not listed) | realtor.ca | 2 | 0.3% |
| 13 | Sutton Group - Admiral Realty Inc., Brokerage | Sutton | 2 | 0.3% |
| 14 | Needler Realty Inc. | realtor.ca | 1 | 0.1% |
| 15 | P2 Realty Inc. | realtor.ca | 1 | 0.1% |
| 16 | Realty Wealth Group Inc. | realtor.ca | 1 | 0.1% |
| 17 | Red Apple Real Estate Inc. | realtor.ca | 1 | 0.1% |
| 18 | Right at Home Realty (branch not listed) | Right at Home | 1 | 0.1% |
Offices with fewer than 10 agents appear in this table but don't get their own page. Across the 460 Newmarket agents whose sites we check, 90.9% list a website of their own (national 59.9%).
Network mix in Newmarket
Coverage: these are the 7 brokerage rosters we scrape (national networks and independents) — about 50.6% 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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