The largest brokerages in Newmarket

9 offices, 733 agents counted at the 2026-09-23 scan. Right at Home Realty - Newmarket leads with 266 agents — 36.3% of the tracked roster, ahead of CENTURY 21 Heritage Group Ltd. Brokerage at 139. The local market is fairly concentrated (top three hold 67.8%).

733
agents counted
9
competing offices
67.8%
held by the top three
13%
hold a broker title

The top 9 at a glance

Agents on the roster at the 2026-09-23 scan; percentages are share of all 733 tracked in Newmarket.

  1. Right at Home Realty - Newmarket 266 36.3%
  2. CENTURY 21 Heritage Group Ltd. Brokerage 139 19.0%
  3. REMAX Realtron Realty Inc 92 12.6%
  4. REMAX Hallmark York Group Realty Ltd 85 11.6%
  5. Coldwell Banker The Real Estate Centre, Brokerage 71 9.7%
  6. Royal LePage RCR Realty 71 9.7%
  7. Sutton Group Kings Cross Inc., Brokerage 4 0.5%
  8. REMAX Realtron Turnkey Realty 3 0.4%
  9. Sutton Group - Admiral Realty Inc., Brokerage 2 0.3%

Bar length is relative to the largest row; percentages are share of all 733 tracked agents. 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 266 36.3%
2 CENTURY 21 Heritage Group Ltd. Brokerage Century 21 139 19%
3 REMAX Realtron Realty Inc RE/MAX 92 12.5%
4 REMAX Hallmark York Group Realty Ltd RE/MAX 85 11.6%
5 Coldwell Banker The Real Estate Centre, Brokerage Coldwell Banker 71 9.7%
6 Royal LePage RCR Realty Royal LePage 71 9.7%
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 2 0.3%

Offices with fewer than 10 agents appear in this table but don't get their own page. Across the 452 Newmarket agents whose sites we check, 81.6% list a website of their own (national 59%).

Network mix in Newmarket

Right at Home 266 (36.3%) RE/MAX 180 (24.6%) Century 21 139 (19%) Coldwell Banker 71 (9.7%) Royal LePage 71 (9.7%) Sutton 6 (0.8%)

Coverage: these are the 6 national networks we scrape — about 46.1% 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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