New York’s recent decision to freeze rents on rent-stabilised apartments has been hailed as a victory by tenant advocates and Mayor Mamdani. But for those of us who remember the law of unintended consequences, this is a classic case of treating symptoms rather than causes. The freeze, which applies to roughly 1 million apartments, aims to shield tenants from skyrocketing rents in a city where the median rent now consumes over 30% of income. Yet UK housing experts, who have seen similar policies fail across the Atlantic, are warning that price controls are a sledgehammer where a scalpel is needed.
The logic is seductive. If rents are too high, cap them. But the market, like water, finds its way. In London, rent controls in the 1970s did not make housing affordable. They created a black market, drove down quality, and shifted investment into unregulated sectors. As the Institute of Economic Affairs noted, controlled rents led to a 15% drop in rental supply within two years. Meanwhile, Berlin’s rent control experiment lasted merely two years before being struck down by courts as unconstitutional. The result? A surge in evictions and a decline in new construction.
New York’s version may be more nuanced: the freeze applies only to renewals for rent-stabilised tenants, not new leases. But this creates a two-tier market where existing tenants enjoy below-market rents while newcomers face even higher prices as landlords try to recoup losses. Capital flight is already visible. Major developers have halted new projects, citing uncertainty. Blackstone, the world’s largest alternative asset manager, has scaled back its New York multifamily investments. The city’s housing stock, already ageing, will see even less renovation.
Mamdani argues that the freeze is a necessary pause while the city builds more affordable homes. But that building requires profit incentives. If investors fear that future returns will be capped, they will look elsewhere. The result: less supply, more demand, and a black market of illegal sublets. Gilt yields in the UK rose last week on news that the government was considering similar measures, with the 10-year yield spiking 10 basis points as investors priced in weaker housing market growth.
What New York needs is not a freeze but a thaw in restrictive zoning laws that limit density. The city has not built enough housing to meet demand for decades. Forward to 2030, and the gap will widen to 500,000 units. Price controls are a sticking plaster on a haemorrhage. They reduce transaction volumes, making it harder for families to move, and they distort the labour market by locking people into apartments they would otherwise leave for job opportunities.
UK housing experts point to other options: land value taxes, stamp duty cuts for downsizers, and fast-track approvals for modular construction. These are not silver bullets either, but they avoid the perverse incentives of price controls. As one economist put it, "Controlling rents is like controlling the price of bread. It helps the first buyer but destroys the bakery."
The short-term gains for tenants are real. But the long-term costs will be borne by the next generation of renters who will find even fewer options. For now, Mamdani has his victory. The question is whether New York can afford it.
