Challenger portal OnTheMarket is expected to mark its first six months by announcing that it received 5m visits this month.

With just days to go until the end of July, the portal looks set to announce its record traffic at the end of this week.

Chief executive Ian Springett said yesterday that in its first six months, OnTheMarket has “achieved what no other property portal has managed to do in recent years” and created a sea-change in the marketplace.

He also paid tribute to agents for their support and affirmed core messages – that the new portal is the shop window for full-service agents.

Acknowledging the power struggle that still lies ahead, he also affirmed that OnTheMarket’s ambition is to challenge the duopoly of Rightmove and Zoopla.

Springett said: “OnTheMarket has contributed much-needed competition as a credible, growing challenger brand and business, providing consumers with a first-class digital searching platform.

“For such a new venture, levels of traffic have been impressive and are continuing to grow.

“Businesses do not launch and become market leaders overnight.

“We have received excellent support from an increasing number of agents who recognise the need to challenge the duopoly that Rightmove and Zoopla have enjoyed in the property portal market.

“We are extremely pleased with our progress, both in terms of members signing up but also in terms of our appeal to consumers, with an anticipated 5m visits to the portal in July.

“The website is delivering increasing numbers of quality leads to our members and a clean, fast service to our visitors, who for too long have had cluttered property presentation and potentially misleading ‘tools’ and ‘features’ which detract from the properties themselves.

“We continue to see impressive levels of returning visitors to the site as well as high volumes of new ones.

“​Consumers and agents have given positive feedback on the site’s speed (according to independent Alexa statistics, OnTheMarket loads considerably faster than either Rightmove or Zoopla),​ as well as its clear format and responsive design.

“Our members – and our property-seekers – know that the properties being marketed will not be mixed in with those of online-only property marketers or private vendors.

“Every property listed with us is on the market with high street estate and letting agents, who offer a wealth of experience and local market knowledge and a full end-to-end service to their vendors and landlords.

“These office-based agents benefit from differentiating their offering from the remotely-located, part-service, online-only offerings, which often consist of little more than a listing on their own website and on two of the three major property portals.

“Equally, property-seekers enjoy the reassurance that every property is listed with agents who they can deal with face-to-face, who can help them to organise viewings directly and who can provide solid locally-based advice.”

As for the ongoing battle, Springett said: “You can see across other sectors such as retail (Amazon), computing (Microsoft) and even search marketing itself (Google) that a challenge must be made to ensure that one or two companies do not become all-powerful.

“With the introduction of OnTheMarket, our members have injected more choice into the market and are pursuing a longer-term strategy to prevent dominance of the portals market by just two firms.”