Rightmove has built one of the most profitable business models in British commerce, and the latest scrutiny of its fee structure - highlighted in a recent Financial Times investigation - has reignited a debate that has simmered for years among estate agents, landlords and developers: is the dominant property portal now extracting more value from the market than it creates? With operating margins reported to sit close to 70% and average agent membership fees running to roughly £1,300–£1,500 per branch per month, Rightmove's position looks less like a technology platform and more like a toll booth that virtually every seller in England and Wales must pass through.
The reason this matters extends well beyond agent bookkeeping. Rightmove commands an estimated 85–90% share of online property search traffic, dwarfing rivals Zoopla and OnTheMarket. For agents in Manchester, Birmingham or Leeds, delisting from Rightmove is commercially close to unthinkable, regardless of cost, because buyer eyeballs simply are not distributed anywhere else in comparable volume. That asymmetry gives Rightmove pricing power that few consumer platforms enjoy, and it has raised fees steadily even through periods when transaction volumes - and therefore agent revenues - have fallen. In 2023, UK residential transactions dropped to around 1.02 million, roughly 20% below pre-pandemic norms, yet Rightmove's revenue still climbed to over £332 million, underlining how insulated its model is from the cyclicality that batters the rest of the housing industry.
For buy-to-let landlords and portfolio investors, the practical effect is an invisible tax embedded in every instruction. Agents rarely absorb rising portal fees; they pass them through via commission structures or reduced service levels, particularly to smaller landlords who lack the negotiating leverage of institutional build-to-rent operators. In high-turnover rental markets such as London, Manchester and Liverpool, where void periods are costly, landlords are effectively subsidising a platform fee structure they never see itemised. This matters more now that the Renters' Rights Bill is tightening margins across the sector, meaning every incremental cost - including the marketing cost baked into agency fees - erodes yield at a moment when landlords have far less room to absorb it.
Developers face a parallel dynamic, though at greater scale. New-build marketing budgets routinely allocate significant sums to portal exposure because buyer discovery for off-plan schemes in regeneration hotspots like Birmingham's Digbeth or Leeds South Bank depends heavily on portal visibility rather than agent footfall. Developers with weaker brand recognition than volume housebuilders are the most exposed, since they cannot rely on direct search traffic and must effectively buy prominence. As build costs remain elevated - still running some 15–20% above 2019 levels according to BCIS data - any additional marketing overhead compounds pressure on already thin development margins, particularly in regional markets where sale prices have not kept pace with construction inflation.
The competitive landscape offers only partial relief. OnTheMarket's acquisition by CoStar in 2023, followed by its rebranding effort and aggressive free-listing strategy, was widely read as the first credible attempt to break Rightmove's grip in over a decade. CoStar's deep pockets - the group generated global revenues exceeding $2.5 billion in 2023 - give it the staying power to wage a prolonged price war that previous challengers lacked. Early indications suggest some agent migration, particularly among independents in Newcastle and the North East frustrated by fee increases, but Rightmove's network effects remain formidable: buyers go where listings are, and listings go where buyers are. Breaking that loop requires not just capital but a multi-year commitment to subsidising both sides of the market simultaneously.
Regulatory attention adds a further variable. The Competition and Markets Authority has already shown willingness to intervene in digital platform markets, and Rightmove's dominant position, combined with reported profit margins that outstrip most FTSE-listed consumer platforms, makes it a plausible future target, particularly if agent complaints translate into formal submissions. Any CMA inquiry would likely take 18–24 months to conclude, but even the threat of intervention could accelerate commercial concessions, similar to the pattern seen with online travel agents in the last decade.
Over the next six to twelve months, expect three trends to crystallise: continued agent grumbling without mass defection, given the absence of a fully credible alternative; intensified competitive spending from CoStar-backed OnTheMarket, which will marginally soften Rightmove's pricing power without breaking it; and growing landlord and developer awareness that portal fees are a legitimate line item to interrogate when negotiating agency terms. Rightmove's dominance is not under immediate threat, but the era of unquestioned fee increases is drawing to a close, as sharper-eyed investors start treating portal costs as a controllable expense rather than an unavoidable one.
Key Takeaways
- Rightmove's estimated 70% operating margin and 85-90% traffic share give it pricing power that has pushed average agent fees to roughly £1,300-£1,500 per branch monthly, regardless of transaction volumes.
- Buy-to-let landlords and developers indirectly absorb these costs through agency commissions and marketing budgets, squeezing yields further amid the Renters' Rights Bill and elevated build costs.
- CoStar-backed OnTheMarket represents the most credible competitive threat in a decade, but network effects mean meaningful market share shifts will take years, not months.
- CMA scrutiny is a plausible medium-term risk; investors and agents should treat portal fees as negotiable overheads rather than fixed costs going into 2025.
