After two years of exceptional rental growth that pushed annual increases above 10% at their peak, the UK rental market has entered a period of meaningful deceleration. Zoopla's most recent rental market data places annual rent growth at 2.2% nationally, with the average rent for new lets now standing at £1,319 per month. For landlords who built yield projections on the assumption that above-inflation rental growth would continue indefinitely, the moderation requires a recalibration. For those who have managed expectations carefully, it confirms what the supply and demand data has been signalling for several months.
What is driving the slowdown
The deceleration in rental growth is being driven by a combination of factors that are structural rather than temporary. Supply of available rental properties is up 11% year-on-year, driven partly by landlords returning properties to the market following sales that did not complete and partly by a cohort of renters who have made the step into home ownership as mortgage affordability improved through late 2025 and early 2026.
At the same time, demand has eased from its exceptional post-pandemic highs, with Zoopla recording enquiries per available property at their lowest level in six years.
Affordability has also acted as a natural ceiling. In markets where rents have risen sharply since 2021, tenants have reached the limits of what their incomes can support, and landlords in those markets have found that further increases above 3 to 4% are either challenged through the new Section 13 tribunal process or result in tenant departures that extend void periods and offset the rental gain.
How to recalculate yield in the current environment
Gross yield, calculated by dividing annual rental income by the property's current market value and expressing it as a percentage, is the starting point for most landlord yield assessments. In a period of strong rental growth, gross yields tend to improve even as property values rise, because income is growing faster than capital values in many markets. In the current environment, with rental growth at 2.2% and house price inflation at 1.3% nationally, the relationship between income growth and capital growth is more balanced, and gross yield calculations need to reflect actual current rents rather than projections that assumed continuation of the 2022 and 2023 growth trajectory.
A property purchased for £250,000 and letting at £1,200 per month generates a gross yield of 5.76%. With rental growth at 2.2%, that figure rises to approximately £1,226 per month after one year, representing a gross yield on purchase price of 5.88%. The improvement is real but modest, and it needs to be assessed against the full cost base of ownership rather than in isolation.
Net yield is the figure that matters
Gross yield is a useful indicator but an incomplete one. Net yield accounts for the full cost of ownership, including mortgage interest, agent management fees, insurance, maintenance and void costs, safety certificate renewals, and from 2026, the administrative costs associated with Making Tax Digital compliance. These deductions can reduce a gross yield of 5.76% to a net yield of 3.5 to 4% or lower depending on the property, its condition, and how it is managed.
In a period of strong rental growth, landlords with strong gross yields can absorb rising costs without their net yield position deteriorating significantly. With growth at 2.2%, the margin is narrower and cost management becomes proportionally more important. Landlords who have not reviewed their cost base recently, particularly those paying management fees set several years ago or carrying higher-rate mortgage products that have not been reviewed since rates began falling in late 2024, may find that their net yield is lower than their gross yield figure would suggest.
Void periods have become a more significant variable
Zoopla's data shows that the average time to let has extended from the near-instant lettings of 2022 and 2023 to a current average of 20 days nationally, with some markets running longer. In a period when rents were rising 8 to 10% per year, a two to three-week void represented a proportionally small cost relative to the annual income uplift. With growth at 2.2%, each void period carries more weight in the annual yield calculation. A property renting at £1,319 per month sitting empty for three weeks costs approximately £1,000 in lost income, which at 2.2% annual growth takes over a year to recover.
This dynamic reinforces the commercial case for tenant retention as a yield management strategy. The cost of a void, re-letting fees, referencing, and any remedial work between tenancies, consistently exceeds the cost of a modest rent concession to retain a reliable tenant.
Landlords who price renewals with that arithmetic in mind tend to generate stronger net yields over a three to five-year holding period than those who maximise each individual rent review in isolation.
What to expect through the remainder of 2026
Zoopla's forecast for rental growth across 2026 sits at 2 to 3%, with modest upward pressure from sustained demand in supply-constrained markets and a degree of downward pressure from improved affordability conditions and the new Section 13 challenge process.
Landlords planning acquisitions or reviewing portfolio performance should model on the lower end of that range as a conservative base case, with any outperformance treated as upside rather than a planning assumption.
Talk to our lettings team about managing your portfolio's yield performance