UK Real Estate: The Ban on Upwards-Only Rent Reviews: Key Questions Answered

Why It Matters

By removing the default upward‑only clause, the Act shifts rent‑setting power to tenants and introduces greater rent volatility, which could reshape investment valuations and financing structures in the UK commercial property market.

Key Takeaways

• Ban covers all commercial tenancies, not just retail
• Existing leases remain exempt; new leases must allow downward reviews
• Tenancy renewal options after 17 Mar 2026 fall under the ban
• Sublease rent clauses must permit both upward and downward adjustments
• Tenants can now trigger rent reviews, potentially lowering rents in downturns

Pulse Analysis

The 2026 Act emerged from growing concerns that upward‑only rent reviews were accelerating high‑street vacancies and fueling anti‑social behaviour. By embedding the ban within the Landlord and Tenant Act 1954, the government aims to soften the adversarial nature of lease renewals and align commercial rents with broader economic indicators such as inflation or tenant turnover. This legislative shift mirrors a wider policy trend toward protecting small businesses and stabilising retail ecosystems, while also signaling a more interventionist stance on commercial property contracts.

For landlords and investors, the new regime introduces operational and financial complexities. Existing leases are grandfathered, creating a bifurcated market where pre‑2026 contracts retain upward‑only clauses while post‑2026 agreements must accommodate downward adjustments. Tenancy‑renewal options signed after 17 March 2026 are immediately subject to the ban, forcing landlords to redesign renewal strategies and potentially accept lower rents in a soft market. Subleases pose an additional challenge: head‑lease terms that require upward‑only reviews become unenforceable, risking income shortfalls for intermediate tenants who must now negotiate rent‑review mechanisms that can move in both directions.

Market participants are already exploring alternative rent‑review structures to mitigate uncertainty. Index‑linked reviews tied to the Retail Prices Index or Consumer Prices Index allow rents to fluctuate with macro‑economic trends, while stepped predetermined increases provide predictability at the cost of forecasting accuracy. Shorter leases without review clauses are gaining traction, especially for high‑growth sectors like data centres. The government’s forthcoming consultation on caps and collars could further shape pricing models, offering investors a tool to cap downside risk. Adapting to these changes will require proactive lease drafting, robust financial modeling, and close monitoring of regulatory guidance to preserve asset values in the evolving UK commercial real‑estate landscape.