United States New Hampshire Portsmouth
New Hampshire · Portsmouth · 2026
Top real estate brokerages in Portsmouth, NH
Count taken September 5, 2026Page built September 5, 2026
489 real estate agents in Portsmouth, New Hampshire had a published brokerage profile on September 5, 2026. Keller Williams is the largest real estate brokerage in Portsmouth with 323 agents, 66.1% of the 489 whose profile names a brokerage; the three largest together hold 87%.
Real estate brokerages in Portsmouth, ranked by agents
Every brokerage with 3 or more agents in Portsmouth. A company that publishes no office names appears as one row covering all its offices in the city.
| Brokerage | Agents | Share of attributed agents | Brand | |
|---|---|---|---|---|
| 1 | Keller Williams | 323 | 66.1% | |
| 2 | Coldwell Banker Realty | 61 | 12.5% | Coldwell Banker |
| 3 | Berkshire Hathaway HomeServices | 39 | 8.0% | |
| 4 | Compass | 34 | 7.0% | |
| 5 | RE/MAX | 23 | 4.7% | |
| 6 | Real Broker | 6 | 1.2% | Real Brokerage |
| 7 | Better Homes and Gardens Real Estate The Masiello Group | 3 | 0.6% | Better Homes and Gardens |
How Portsmouth compares with New Hampshire
Portsmouth holds 18.1% of the agents counted in New Hampshire and ranks 2nd of the 102 New Hampshire cities with at least one agent. The largest brokerage's share is 66.1% here against 27.9% for Keller Williams across New Hampshire as a whole, so the Portsmouth market is more concentrated than the state. 3.5% of the 455 checked agents in Portsmouth have a website of their own, against 4.3% statewide. 95.9% publish a direct phone number (statewide 93.1%).
How many real estate agents are in New Hampshire?
Other New Hampshire cities
- Bedford 536
- Nashua 313
- Londonderry 204
- Concord 137
- Salem 121
Where the data comes from
Counted from the public agent directories of 7 brokerage brands with agents in Portsmouth. Independent brokerages outside those networks are not counted, so this is a ranking among the networks we can see, not a census of every licensee in the city. Full method on the national page.
The underlying rows, one per agent with a published email, are sold by usrealtorlist.com as its New Hampshire real estate agent list; nothing per agent appears here.
Questions this page answers
- What is the largest real estate brokerage in Portsmouth, NH?
- Keller Williams with 323 agents, 66.1% of Portsmouth agents whose profile names a brokerage, ahead of Coldwell Banker Realty (61).
- How many real estate agents are in Portsmouth, NH?
- 489 as of September 5, 2026, counting agents with a published brokerage profile. That is 18.1% of the 2,701 counted in New Hampshire.
Cite this page
Realty Census (2026). Top real estate brokerages in Portsmouth, NH: 489 agents. Count dated 2026-09-05. https://realtycensus.com/new-hampshire/portsmouth/