The largest brokerages in Summerside
4 offices, 80 agents counted at the 2026-11-02 scan. CENTURY 21 Northumberland Realty (1987) Ltd. leads with 35 agents — 43.8% of the tracked roster, ahead of REMAX Harbourside Realty Ltd at 23. The local market is unusually concentrated — three offices hold most of it (top three hold 95%).
The top 4 at a glance
Agents on the roster at the 2026-11-02 scan; percentages are share of all 80 tracked in Summerside.
- CENTURY 21 Northumberland Realty (1987) Ltd. 35 43.8%
- REMAX Harbourside Realty Ltd 23 28.7%
- Royal LePage Country Estates 18 22.5%
- Coldwell Banker Parker Realty 4 5.0%
Bar length is relative to the largest row; percentages are share of all 80 tracked agents. Download this chart as an image ↓
Every office we track in Summerside
| # | Office | Network | Agents | Share |
|---|---|---|---|---|
| 1 | CENTURY 21 Northumberland Realty (1987) Ltd. | Century 21 | 35 | 43.8% |
| 2 | REMAX Harbourside Realty Ltd | RE/MAX | 23 | 28.7% |
| 3 | Royal LePage Country Estates | Royal LePage | 18 | 22.5% |
| 4 | Coldwell Banker Parker Realty | Coldwell Banker | 4 | 5% |
Offices with fewer than 10 agents appear in this table but don't get their own page.
Network mix in Summerside
Coverage: these are the 4 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 Summerside. Methodology →
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