Zack Polanski to call for three-year cap on private rent rises

The Green Party's decision to anchor its conference message around a three-year rent cap is a calculated move that speaks directly to one of the most potent fault lines in British politics: the widening gap between homeowners and renters. By framing housing as a matter of "generational fairness," Polanski is tapping into a grievance that resonates far beyond the Green Party's traditional base. For millions of younger voters, the dream of homeownership has receded, and the private rental market has become a source of chronic financial strain. The proposal positions the Greens as a party willing to challenge the orthodoxy that market forces alone should determine housing costs. The case for a rent cap is straightforward in its moral appeal. Tenants, particularly in urban areas, have faced years of above-inflation rent increases while wages have stagnated. A three-year cap would provide a measure of predictability and relief, allowing renters to plan their finances without the fear of sudden, unaffordable hikes. Supporters argue that the private rental market is not a level playing field: landlords hold significant power over tenants, and the scarcity of housing means that renters have little leverage. In this view, government intervention is not an overreach but a necessary correction to a structural imbalance. Yet the counterargument is equally well-rehearsed, and it is one that Polanski will have to confront head-on. Critics of rent controls—including many economists and housing experts—contend that capping rents can lead to unintended consequences. If landlords cannot raise rents to match market rates, they may choose to sell their properties, reducing the supply of rental housing and ultimately making the problem worse. There is also the question of quality: if landlords see their returns squeezed, maintenance and improvements may be deprioritised. The experience of cities like Berlin and San Francisco, where rent controls have been implemented with mixed results, offers cautionary tales that opponents of the policy are likely to cite. What makes this intervention interesting is not just the policy itself, but the political positioning. The Greens are seeking to broaden their appeal beyond environmental issues, and housing offers a natural bridge to voters who may not prioritise climate action but who feel acutely the pressures of the cost-of-living crisis. By placing this issue at the heart of the party's conference, Polanski is signalling that the Greens intend to compete on the terrain of economic justice, not just ecological transformation. Whether the three-year cap becomes a flagship policy or a symbolic gesture remains to be seen, but it ensures that the Greens will have something to say in a debate that is only likely to intensify as the election cycle approaches. Source: https://www.bbc.co.uk/news/articles/c