For those of us still floating above the waves, the Mayor has launched a new housing product: Key Worker Living Rent (KWLR) at the start of the year.
The pitch is straightforward. Deliver at least 6,000 homes by 2030, let to designated key workers at rents linked to income rather than the market. Rents are expected to be set at roughly 40% of average net household income, with annual increases capped at CPI + 1%. Eligibility would apply to key workers earning up to around £75,000, with indicative two-bed rents of roughly £1,300 per month.
Politically, it is hard to argue with. Teachers, nurses and other essential workers are being priced out of London. A rent-controlled product designed for them sounds both fair and necessary. But housing policy should be judged on whether it meaningfully improves delivery.
And that is where this starts to unravel.
A Pricing Intervention in a Supply Crisis
London’s housing problem is not primarily a tenure classification issue. It is a supply issue. Affordable housing starts have fallen sharply. Brownfield schemes are stalling under cost pressure. Viability has tightened across large parts of the capital. Construction costs remain elevated.
Against that backdrop, launching a new intermediate rent product does not unlock land, reduce build costs, or materially change scheme economics. It redistributes affordability within a constrained system. 6,000 homes by 2030 equates to roughly 1,200 homes per year over five years. In a city that needs tens of thousands annually, that is marginal.
This is a policy about pricing, not production.
Another Layer in an Already Complex System
London’s affordable housing landscape is already crowded. I am going to try and summarise what’s out there:
- Social Rent
- London Affordable Rent
- London Living Rent
- Shared Ownership
- Discounted Market Rent
- Discount Market Sale
Key Worker Living Rent now joins that list.
The G15 group of housing associations warned that the proposed rents will fall below break-even levels without additional grant support. They also highlight the risk that adding another tenure increases administrative and operational complexity for providers.
If KWLR requires further subsidy to stack up, the obvious question is whether that funding would generate greater social value if directed towards social rented homes, where affordability gaps are deepest. London’s waiting lists are not dominated by households earning £70,000. They are dominated by those who cannot afford intermediate rents at all.
The “Key Worker” Definition Problem
KWLR introduces occupation-based eligibility alongside income caps of up to around £75,000. That sounds targeted. In practice, it introduces new layers of bureaucracy.
Who qualifies? Who updates the occupational list? How are role changes monitored? What happens when labour market shortages shift?
Using occupation as a filter may be politically resonant, but it does not alter the affordability arithmetic. Many lower-paid key workers will still struggle even at discounted rents. Others just above the threshold may face similar pressures but fall outside eligibility. The result is a more complex system, without necessarily being a more effective one.
Viability Still Rules Everything
There is an argument that CPI + 1% rent certainty creates a more attractive long-term income stream for institutional investors. Predictability matters. But predictability does not solve viability.
If brownfield schemes are already marginal, layering in a rent-controlled product that may require additional subsidy does not automatically improve deliverability. It may even dilute limited public funding across more categories rather than concentrating it where it has the greatest impact. London’s immediate housing emergency is not a shortage of tenure types. It is stalled schemes and falling starts. Until viability improves — particularly on brownfield sites — tenure innovation remains secondary.
Sustainability and additionality
In a city facing a brownfield housing crisis, the central challenge is not whether key workers deserve support. They do.
The challenge is whether launching a new intermediate rent product meaningfully increases housing delivery. A product which is grant dependent will always be fighting against other grant dependent offers.
Moreover, London’s Boroughs will always prioritise what they feel is important first. That is not always the same things as what the Mayor wants. Therefore, if you are launching a new product it needs to be self sustaining at least to a degree. Otherwise, people will give up on it quickly when the political plates shift.
A better approach would be to start by asking the question what is sustainable when you layer on development viability. GLA should look to the Pocket model for instruction. Yes the discounts were shallow but the point was that it was broadly self sustaining for many years. It didn’t need lots of grant, just loans. Can that be repeated in some form.
Without a parallel strategy to unlock supply at scale, KWLR risks being another well-intentioned addition to a system that is already struggling to build. If political capital is finite, the question becomes strategic: Is the priority refining intermediate rent categories? Or restoring confidence in brownfield delivery at scale? Because without more homes, every rent product is just managing scarcity.
