At a moment when housing has become the defining anxiety of a generation, Green Party leader Zack Polanski is stepping forward in Brighton to propose an emergency three-year ceiling on private rent increases — capped at the lowest of inflation, wage growth, or 2%. The proposal is less a technical fix than a moral argument: that the gap between what landlords charge and what workers earn has quietly dismantled the possibility of independent life for millions of younger Britons. Where Labour's Renters' Rights Act offers incremental reform, the Greens are reaching for something more structural, e
Green leader calls for three-year cap on private rent rises
Millions of UK private renters face affordability pressures, with younger generations unable to afford independent housing and forced to live with parents.
Renters forced to cut back and back and back on everything else
Mark
So Polanski is proposing a hard cap on rent increases for three years. What's the actual mechanism—how would the government enforce this?
Mimi
He's calling for rents to rise no more than whichever is lowest of three measures: inflation, wage growth, or 2%. The idea is to create a floor below which landlords cannot push, giving renters predictability while the government designs something longer-term called a Fair Rents Guarantee.
Luke
But the source doesn't explain how enforcement would work. Would there be fines? Would tenants have a right to sue? The proposal is framed as a policy goal, not a legislative mechanism.
Mark
Fair point. And the government already passed the Renters' Rights Act this year. What does that do that this wouldn't?
Mimi
The Act ties rent increases to the open market rate once a year. Polanski's argument is that the open market rate itself is the problem—it's already inflated. His cap would override that and peg increases to inflation, wages, or 2%, whichever is lowest.
Luke
Right, but the source notes that rents rose 3.5% in the past year. We don't know what inflation or wage growth was in that same period, so we can't actually calculate whether his cap would have made a meaningful difference.
Mark
What about the economic warnings? The Institute for Fiscal Studies said rent controls cause problems.
Mimi
They warned that controls can create unintended consequences—specifically, demand exceeding supply. If you cap what landlords can charge, fewer people might build rental housing or maintain existing stock.
Luke
The source cites that warning but doesn't include any response from Polanski or the Greens to that concern. We're left with the caution but not the counter-argument.
Mark
And this is happening while Polanski is running for Parliament himself in a by-election next week?
Mimi
Yes. He's asking party members to leave the conference to campaign for him in Holborn and St Pancras. It's a high-stakes seat—Labour won it by a large margin in 2024.
Luke
So the timing is genuinely complicated. He's making a major policy speech while also fighting for his own seat. The source notes that but doesn't explore whether one effort might overshadow the other.
El Pulso
- UK private rents have climbed to an average of £1,377 a month — a 3.5% rise in a single year — leaving renters cutting back on essentials just to stay housed.
- Labour's Renters' Rights Act, introduced earlier this year, is already being dismissed by the Greens as too weak, too slow, and too deferential to market rates.
- Polanski's three-year emergency cap would freeze annual increases at whichever is lowest — CPI, wage growth, or 2% — buying time to build a lasting Fair Rents Guarantee.
- The Institute for Fiscal Studies warns that hard rent controls risk shrinking rental supply, a tension the Greens acknowledge but refuse to let stall the conversation.
- The Green Party arrives at its largest-ever conference with real momentum — hundreds of new councillors, a fifth MP, and a tripled membership — but faces a Labour government that has begun absorbing some of its signature positions.
- Polanski is simultaneously running as the Green candidate in the Holborn and St Pancras by-election, asking activists to leave Brighton mid-conference to campaign — a gamble that could deliver the party its first London seat.
At a moment when housing has become the defining anxiety of a generation, Green Party leader Zack Polanski is stepping forward in Brighton to propose an emergency three-year ceiling on private rent increases — capped at the lowest of inflation, wage growth, or 2%. The proposal is less a technical fix than a moral argument: that the gap between what landlords charge and what workers earn has quietly dismantled the possibility of independent life for millions of younger Britons. Where Labour's Renters' Rights Act offers incremental reform, the Greens are reaching for something more structural, even as economists caution that rent controls carry their own shadows.
Zack Polanski is set to take the stage at the Green Party's Brighton conference — its largest in history — to demand an emergency three-year brake on private rent increases. The cap would limit annual rises to whichever figure is lowest: consumer price inflation, wage growth, or 2%. For Polanski, this is not a housing policy so much as a generational reckoning: nineteen-year-olds commuting from parents' homes to university, twenty-five-year-olds moving back after failing to find work, thirty-five-year-olds returning with partners in tow. The common thread, he will argue, is a rental market that has outpaced wages and left millions in perpetual financial anxiety.
The government's Renters' Rights Act, introduced earlier this year, does tighten the rules — limiting landlords to one annual increase tied to market rates, converting tenancies to rolling agreements, and making eviction harder. But the Greens say it lacks teeth. ONS data shows average monthly private rents reached £1,377 in early 2026, up 3.5% in a year. Polanski's proposed cap would serve as breathing space while a longer-term Fair Rents Guarantee is developed. The Institute for Fiscal Studies has cautioned that rent controls can suppress supply, but the Greens, who have championed the policy for years, see this moment as their best chance to push it into the mainstream.
The party arrives with genuine momentum: hundreds of new councillors from local elections, a fifth MP won in the Makerfield by-election, and a membership that has tripled since Polanski took over. Yet national polling has plateaued, and Labour under Prime Minister Andy Burnham has begun occupying ground the Greens once held alone — on electoral reform, EU relations, and refugee policy. Polanski has claimed partial credit for that shift, framing it as proof that electoral pressure works.
Adding an unusual edge to the conference is Polanski's own candidacy in the Holborn and St Pancras by-election, triggered by Keir Starmer's departure from Parliament. He has asked activists to leave Brighton over the weekend to help him campaign, and plans to return to London immediately after his leader's speech. A win would be historic — the Greens' first seat in the capital — though it would mean overturning a substantial Labour majority.
Zack Polanski, the Green Party leader, is preparing to call for an emergency brake on private rent increases—a three-year cap that would limit annual rises to whichever is lowest: the consumer price index, wage growth, or 2%. He will make the case Friday afternoon at his party's conference in Brighton, framing the proposal as a matter of generational fairness and positioning housing as the defining issue for younger Britons locked out of independent living.
The Green Party membership has tripled since Polanski took the helm just over a year ago, and the conference is being billed as the largest in the party's history. In his speech, Polanski is expected to describe a landscape where nineteen-year-olds commute from their parents' homes to university, twenty-five-year-olds unable to find work move back in with family, and thirty-five-year-olds return with partners in tow. The through-line is the same: rent has become unaffordable, and landlords have exploited the gap between housing costs and wage growth, leaving renters to cut back on everything else just to keep a roof overhead.
The government introduced the Renters' Rights Act earlier this year, which restricts landlords to one annual rent increase tied to the property's open market rate and converts tenancies to rolling agreements rather than fixed terms. It also makes eviction harder. But Polanski will argue the measure does not go far enough. According to the Office for National Statistics, average UK monthly private rents climbed 3.5% in the twelve months to January 2026, reaching £1,377. The Greens contend this pace of increase, even under the new rules, leaves renters in a state of perpetual fear and uncertainty.
The three-year cap, Polanski is expected to say, would provide what he calls vital breathing space—time for the government to develop a national Fair Rents Guarantee designed to keep rents affordable over the long term. The Institute for Fiscal Studies has warned that rent controls carry risks: they could trigger unintended consequences, including demand outpacing supply in the rental market. That economic caution has not deterred the Greens, who have campaigned on rent controls for years and now see an opening to push the issue into the mainstream.
The conference comes at a moment of political momentum for the party. The Greens gained hundreds of councillors in local elections earlier this year and won their fifth MP, Hannah Spencer, in the Makerfield by-election. Yet their rise in national polling appears to have stalled recently, and the party faces a new political landscape under Prime Minister Andy Burnham. Labour has shifted ground on several fronts where the Greens once held distinctive positions: electoral reform, European Union relations, Israeli West Bank settlements, and refugee resettlement. Polanski has claimed credit for applying electoral pressure that forced Labour's hand on at least two of those issues.
The timing of the conference creates an awkward overlap with the Holborn and St Pancras by-election, triggered by Keir Starmer's departure from Parliament. Polanski is standing as the Green candidate and has asked party activists to leave the conference over the weekend to help him campaign. A victory would give the Greens their first seat in London, though it would require overturning a substantial Labour majority from the 2024 general election. Polanski said he intends to return to the central London seat immediately after his leader's speech.
Citas Notables
For too long, landlords have been able to hike prices way beyond wages, leaving renters forced to meet the cost to keep a roof over their heads, cutting back and back and back on everything else— Zack Polanski, Green Party leader
Labour was now 'rhetorically, on a much more similar ground' to the Greens— Rachel Millward, Green Party co-deputy leader
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