Six months after the Renters' Reform Act came into force in May, the system designed to protect tenants from unreasonable rent increases is already under strain. According to the Guardian, rent rises of up to 88% are still being approved through the rent tribunal process, even as tenants challenge increases in record numbers. Both tenants and landlords have told the paper that the tribunal system is "not working for anyone", a striking admission given that the reforms were explicitly billed as a remedy for exactly this kind of dispute.
For professional investors and landlords, this is a significant early signal about how the new regulatory architecture is actually functioning in practice, as opposed to how it was designed on paper. The Renters' Reform Act was meant to give tenants a genuine, low-risk route to contest rent increases they consider unfair, replacing a system many renters previously avoided for fear of retaliatory consequences. The fact that challenges have surged since May suggests the Act has succeeded in lowering the psychological and practical barriers to disputing a rent rise. Yet the persistence of extreme increases, some as high as 88%, being waved through regardless indicates that the tribunal mechanism itself has not been recalibrated to match the new volume or the new expectations tenants now bring to it.
This matters because rent tribunals sit at the intersection of two competing pressures that define the modern private rented sector: landlords' need to reprice properties in line with market rents, particularly after long periods of below-market tenancies, and tenants' need for some predictability in housing costs. When a tribunal system approves rises as large as those being reported, it effectively validates the argument that the Act has changed the process of challenging a rent increase without changing the outcome in many cases. For landlords in high-demand markets, that is a reassurance that repricing to market level remains achievable through the proper channel. For tenants, it is evidence that the reform has added friction and paperwork without delivering the protection they were promised.
The regional implications of this are not uniform. In cities where rental demand has run well ahead of supply, such as Manchester, Birmingham and Leeds, landlords adjusting rents towards prevailing market levels are likely to find tribunals sympathetic to substantial increases, particularly where previous rents were held artificially low. In London and Surrey, where rental values are already stretched and tenant affordability is more fragile, large approved increases are likely to generate sharper political and media scrutiny, and could accelerate calls for firmer caps or guidance on what constitutes a reasonable rise. Liverpool and Newcastle, with historically more modest rent levels, may see fewer extreme percentage increases simply because the base rents being adjusted are lower, but the same structural tension between landlord repricing rights and tenant protection applies across every regional market.
Looking ahead over the next six to twelve months, this early evidence of tribunal strain is likely to become a focal point for policy debate. If record numbers of tenants continue to challenge increases while large rises keep passing, pressure will build on government to revisit either the tribunal's decision-making criteria or the broader framework of the Act itself. Buy-to-let landlords should treat this as a signal that the compliance and administrative burden of rent reviews is rising even if the financial outcome of a successful rent increase is not yet materially constrained. First-time buyers and renters weighing the cost of renting versus buying should note that rent volatility, rather than being reduced by reform, appears for now to be continuing much as before, simply with more visible disputes. Commercial investors and developers active in build-to-rent should watch closely whether government responds to this apparent gap between legislative intent and tribunal practice, since any tightening of the rules on permissible rent increases would directly affect income assumptions underpinning institutional rental portfolios.
The underlying lesson for the market is that legislative reform and practical enforcement are not the same thing. The Renters' Reform Act has clearly changed tenant behaviour, evidenced by the record volume of challenges, but it has not yet changed tribunal outcomes in a way that satisfies either side. Investors should treat the current rent tribunal regime as transitional rather than settled, and should expect further legislative or procedural adjustment as government confronts the gap between its stated policy aims and the reality tenants and landlords are describing on the ground.
