In early 2026, a significant moment emerged in the UK housing conversation when industry leaders issued an open letter urging the government to support the Build-to-Rent (BTR) sector. The message was clear and measured: without policy stability and stronger support, investment in professionally managed rental housing could slow at a time when demand for homes continues to rise.
The appeal reflects deeper concerns about the viability of delivering new rental housing in the UK. While Build-to-Rent has been widely viewed as a promising solution to the nation’s housing shortage, recent economic pressures, regulatory changes, and investor uncertainty have begun to test its resilience.
For policymakers, investors, and renters alike, the letter highlights an important question: can the UK maintain the momentum needed to expand its rental housing supply?
Understanding the Role of Build-to-Rent in the UK Housing Market
Build-to-Rent developments are residential buildings specifically designed for long-term rental rather than sale. Unlike traditional buy-to-let properties owned by individual landlords, these developments are usually funded by institutional investors and managed professionally, often with on-site services and long-term management strategies.
Over the past decade, the sector has grown steadily across major cities such as London, Manchester, and Birmingham. According to industry figures, Build-to-Rent has already delivered more than 146,000 professionally managed homes across the UK, providing a stable supply of rental housing with consistent management standards.
Despite this progress, the sector still represents a relatively small portion of the wider rental market. Estimates suggest BTR properties account for around 2% of the UK’s private rented sector, leaving considerable room for expansion if investment conditions remain favourable.
For many housing experts, Build-to-Rent offers an important complement to traditional housing delivery. By attracting pension funds, insurance companies, and global investors, the model can mobilise large pools of long-term capital to deliver housing at scale.
Yet sustaining that investment requires a stable policy environment—something the sector now fears may be slipping.
The Open Letter: A Warning from the Industry
The open letter was issued by the Association for Rental Living (ARL), the trade body representing the Build-to-Rent sector. Addressed to key government figures—including the Housing Secretary, the Chancellor, and parliamentary housing leaders—the letter urged ministers to recognise growing viability challenges affecting BTR projects.
The immediate trigger for the letter was the withdrawal of the John Lewis Partnership from a major Build-to-Rent development programme. The retailer had previously planned to deliver thousands of rental homes as part of a diversification strategy but decided to step back amid difficult market conditions.
Industry leaders described the move as a concerning signal for the wider sector. Brendan Geraghty, Chief Executive of the ARL, warned that the decision reflects a broader pattern of pressures affecting investors and developers.
According to the letter, several factors are combining to undermine the viability of new projects:
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Higher construction costs
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Elevated interest rates and financing challenges
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Softer investment yields
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Increasing planning obligations
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Expanding regulatory requirements
Together, these pressures are compressing margins and causing some schemes to be redesigned, delayed, or withdrawn entirely.
For investors who allocate capital internationally, the risk is straightforward: if the UK becomes less attractive, funding could simply move elsewhere.
Why Policy Stability Matters
Institutional investors—such as pension funds—typically invest with a long-term horizon. They are often willing to finance housing projects that take years to complete, provided the regulatory and financial environment remains predictable.
However, uncertainty can quickly change the investment equation.
The ARL’s letter stresses that policy stability is essential for investors to price risk accurately. Without it, capital can be redirected to other countries or sectors offering more reliable returns.
This concern comes at a time when the UK is also introducing major reforms to the private rented sector. The Renters’ Rights Act 2025, expected to take effect during 2026, will abolish “no-fault” evictions and introduce new standards for rental homes.
These reforms aim to strengthen tenant protections and improve housing conditions. However, they also add complexity to the investment environment, particularly if combined with additional regulatory layers.
Industry leaders are not necessarily opposed to reform. Rather, they argue that policy changes must be balanced with a clear understanding of economic impact.
The Risk to Rental Supply
At the heart of the debate lies a simple concern: the UK already faces a chronic shortage of housing, and any slowdown in development could intensify the pressure.
Demand for rental homes remains strong, particularly in urban areas where affordability barriers make home ownership difficult. At the same time, traditional buy-to-let landlords have been gradually leaving the market due to tax changes, regulatory requirements, and rising costs.
Build-to-Rent was expected to fill part of this gap by delivering professionally managed rental housing at scale.
But the ARL warns that if viability continues to deteriorate, the consequences could include:
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slower housing delivery
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reduced rental supply
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rising affordability pressures
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increased reliance on lower-quality or temporary housing
These risks are particularly significant in cities experiencing rapid population growth.
What the Sector Is Asking the Government to Do
The open letter does not call for subsidies or financial bailouts. Instead, it outlines a set of policy adjustments aimed at restoring confidence and improving development viability.
Among the key proposals are:
1. Clear long-term policy commitments
Investors need assurance that regulatory frameworks will remain stable over time.
2. Planning reform to support delivery
The industry argues that planning processes should recognise Build-to-Rent as a distinct housing category and streamline approvals.
3. Recognition of housing as critical infrastructure
Treating housing development with similar urgency to transport or energy projects could help accelerate delivery.
4. A balanced tax and regulatory framework
The sector also calls for reconsideration of certain tax measures and licensing regimes affecting large-scale rental developments.
These changes, proponents argue, would help restore confidence without undermining tenant protections.
A Sector with Long-Term Potential
Despite current challenges, many analysts remain optimistic about the long-term potential of Build-to-Rent in the UK.
Large institutional investors—including global property firms—continue to view the UK as an attractive market. In fact, major investment deals are still taking place, with international developers pursuing large residential rental portfolios in cities such as London.
The logic behind the sector remains strong: Britain needs more homes, and long-term institutional investment can help deliver them.
But that investment depends on a partnership between government and industry.
A Moment for Strategic Housing Policy
The open letter serves as a timely reminder that housing policy must balance multiple objectives—tenant protection, affordability, and sustainable development.
In 2026, the UK stands at a critical juncture. Legislative reforms are reshaping the rental sector, economic conditions remain uncertain, and the pressure to deliver new homes continues to grow.
For Build-to-Rent, the question is not whether the model works. It is whether the policy environment will allow it to flourish.
If ministers succeed in creating a stable and supportive framework, the sector could play a crucial role in expanding the nation’s housing supply. If not, investment may slow—and the housing shortage could deepen further.
The message from industry leaders is therefore both cautious and constructive: with the right policy signals, Build-to-Rent could remain one of the UK’s most promising pathways to delivering the homes renters urgently need.
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