Recent research from the Resolution Foundation suggests that average rents could increase by 13% over the next three years, driven by current high market rates filtering through existing tenancies. The Foundation's report, titled 'Through the roof: Recent trends in rental price growth', explores the factors behind the recent rent surge and its potential implications for the future.

According to the findings, the cost of new tenancies has risen by 18% since January 2022. Additionally, there has been a significant increase in the proportion of families opting for private rentals, nearly doubling from 11% in the late 1990s to almost 20% today. Furthermore, the percentage of financially disadvantaged families, led by individuals aged between 30 to 49, relying on renting has almost tripled, rising from 11% in the mid-1990s to approximately 30% in 2021-22.

Contrary to popular belief, the Resolution Foundation challenges the notion that rising interest rates are solely responsible for driving up buy-to-let mortgage servicing costs, leading landlords to pass on these expenses to tenants. The Foundation argues that landlords' ability to transfer increased costs to renters is constrained by the dynamics of the wider rental market.

The Foundation's analysis of Bank of England data contradicts concerns about a mass exodus of landlords from the Private Rental Sector (PRS) due to interest rate hikes and stricter regulations. Instead, the data indicates only a modest contraction of approximately 1% in the PRS since mid-2019.

The primary drivers behind the surge in private rents appear to be the aftermath of the pandemic and recent wage increases. The Foundation emphasizes the long-term correlation between rents and wages, highlighting that average private rents have remained relatively stable as a proportion of average earnings since 2000.

However, the disruption caused by the pandemic, including the suspension of evictions and repossessions, led to a significant decrease in rent levels relative to earnings, reaching record lows and remaining nearly 5% below the long-term trend by early 2022.

The recent increase in rental prices can be seen as a post-pandemic 'correction', bringing the UK's rent-to-earnings ratio back in line with its long-term trend. This correction has been amplified by historically high nominal earnings growth in recent years, with average earnings rising by 13% since the beginning of 2022.

There are signs of moderation on the horizon, with the post-correction phase nearing its end and wage growth slowing down. Market rents for new tenancies have already started to stabilize, declining from an annual growth rate of 10.4% in June 2023 to 7.5% by March 2024.

However, the Resolution Foundation cautions that while the growth in rent levels for new tenancies may be slowing, it could take several years for this trend to permeate throughout the entire PRS. As a result, new renters may face higher rents, while existing tenants nearing the end of their tenancy agreements or facing within-tenancy price increases may experience significant rent hikes in the future.

In the words of Cara Pacitti, senior economist at the Resolution Foundation, "Millions of families embarking on new tenancies across Britain have been grappling with skyrocketing rents in recent years, emerging from the shadows of the pandemic. While the pace of rise for new tenancies appears to be decelerating, the disparity between rental payments and earnings is poised to persist for years to come, affecting those not yet acclimatized to elevated prices."

She further emphasizes, "With an increasing number of families opting for private rentals, and extending their tenures in the process, these rent escalations pose a formidable challenge for Britain, necessitating bold interventions from policymakers. Short-term remedies entail regular adjustments to Local Housing Allowance to alleviate the plight of underprivileged families, while the ultimate long-term solution remains the imperative need to bolster housing infrastructure."