Rightmove has reported a 7% rise in first-half revenue after continued investment in artificial intelligence helped increase customer engagement and generate more leads for estate agents.
However, weaker conditions in the new homes market prompted the company to trim its full-year revenue growth guidance.
Revenue rose to £225.8million in the six months to 30 June, while underlying operating profit increased 3% to £155.1million.
The property portal said its AI-powered "Ask Rightmove" conversational search tool has increased average time spent on the site by around 40%, while users are almost twice as likely to send enquiries after using the feature.
It also said its AI-enabled Online Agent Valuation product delivered around a 50% increase in unique valuation leads for estate agents, with 46 strategic AI initiatives now underway across the business.
Despite the technology progress, Rightmove lowered its full-year revenue growth forecast to 6-8%, from 8-10%, citing subdued conditions in the new homes sector, where the number of developments has fallen to its lowest level in more than a decade.
Chief executive Johan Svanstrom said: "Our platform continues to deliver increased value to partners and consumers.
"H1 2026 has seen strong business and product results: we delivered our highest H1 retention in more than a decade, agency membership grew 1% and our investment in agentic-powered solutions is showing results and coming on the back of strong foundations laid over the last few years."
He added: "For consumers, early indications from our 'Ask Rightmove' conversational search rollout suggest a c.40% uplift in average time on site, with close to double the propensity to send leads. We are on an exciting trajectory for the agentic-powered property marketplace, with true personalisation and new efficiency solutions."