The final full week of June 2026 delivered a clear theme for the London property market: borrowing is getting cheaper, but the supply squeeze keeping rents high shows no sign of easing. For landlords and tenants across South West London, the gap between improving finance conditions and worsening affordability remains the story to watch.
With swap rates wobbling on Middle East tensions and the Bank of England holding rates earlier in the month, lenders have nonetheless been busy trimming buy-to-let products. Below, we break down the headlines and what they mean on the ground in Wandsworth, Putney, Clapham, Battersea, Richmond and Wimbledon.
Buy-to-let rates fall for the second time this month
The biggest news for property investors was a fresh round of lender cuts. Accord Mortgages, the intermediary arm of Yorkshire Building Society, reduced both residential and buy-to-let rates for the second time in June, with reductions of up to 0.18% taking effect from 25 June.
On the buy-to-let side, all fixed rates fell by 0.09 percentage points, bringing a two-year remortgage fix at up to 60% loan-to-value down to 4.78% from 4.87%. The largest residential cuts landed at the 90% LTV tier, a meaningful move for first-time buyers stretching to get onto the ladder.
By the end of the week, The Mortgage Works had gone further, making its third round of June reductions and cutting selected fixes by up to 0.25 percentage points. A two-year limited company fix at 75% LTV dropped to 4.09% (with a 3% fee), an important benchmark for the growing number of landlords holding property through a company structure.
When two major buy-to-let lenders cut three times in a single month, it signals genuine competition returning to the landlord market rather than a one-off promotional move.
Atom bank also entered the fray, increasing commercial procuration fees and offering more competitive rates on larger facilities, a nod to portfolio landlords and those operating HMOs. For investors weighing their options, our guide to buy-to-let property investment in London explains how to model these rate movements against rental yields.
Where mortgage rates sit now
Rightmove’s mortgage tracker, updated on 27 June, put the national average rate at 4.78%, translating to an average monthly payment of around £1,697 against an average asking price of £371,042.
Rightmove’s mortgage expert flagged that geopolitical volatility is feeding directly into swap rates, meaning some products have fluctuated even though the Bank Rate itself was unchanged after the June hold. The encouraging note is that lower-than-forecast inflation could give lenders room to keep cutting, provided the Middle East situation stabilises.
For South West London buyers, where average values sit well above the national figure, even modest rate reductions translate into hundreds of pounds a month. That matters enormously in a market where a typical Putney or Clapham family home commands a price that dwarfs the UK average.
| Metric (late June 2026) | Figure |
|---|---|
| National average mortgage rate | 4.78% |
| Average monthly payment | ~£1,697 |
| Average asking price | £371,042 |
| Two-year BTL remortgage fix (60% LTV, Accord) | 4.78% |
| Two-year limited company fix (75% LTV, TMW) | 4.09% |
Rents keep rising as supply stays tight
While finance conditions ease, the rental picture remains stubbornly tight. New research from LRG’s Spring 2026 Lettings Report, drawing on 650 landlords and tenants, found that the private rented sector’s supply and affordability problems run far deeper than the Renters’ Rights Act can fix on its own.
The findings are sobering. A quarter of tenants wanted to move in the last year but couldn’t, and 33% said they still wouldn’t be able to buy even if local prices fell significantly. The report cites Rightmove data showing rental homes are 9% more expensive than a year ago, alongside Zoopla and ONS figures putting average private rents up 3.5% to £1,381 in the year to April 2026.
That national average masks the reality in South West London property hotspots, where rents for two-bedroom flats in Battersea, Fulham and Wimbledon routinely sit at two to three times that figure. The chronic mismatch between demand and available stock continues to favour landlords on rent, even as compliance costs rise.
Short-term lets add to the supply pressure
Compounding the issue, ONS data released this week showed guest nights in UK short-term rental accommodation rose 11.5% in 2025 to 100.9 million. Propertymark’s Nathan Emerson warned about properties being diverted away from the long-term rental sector and into holiday and short-stay lets.
London has long been a magnet for short-term lets, and while areas like Richmond and Kingston attract genuine tourism, the trend removes family homes from an already starved long-term market. For tenants, fewer available properties means more competition and upward pressure on South London house prices in the rental sphere.
What this means for South West London landlords
The combination of falling finance costs and rising rents creates a genuinely improved environment for property investment in London, particularly for those who buy well and manage professionally. But the regulatory backdrop demands care.
The Renters’ Rights Act continues to reshape how landlords operate, from the abolition of fixed-term tenancies to tighter rules on rent increases and possession. Landlords who understand these rules are far better placed to protect their income. Our breakdown of how the Renters’ Rights Act 2025 affects London landlords remains essential reading for anyone holding stock in the capital.
For investors who would rather not navigate compliance, voids and tenant vetting alone, working with the best letting agent Southwest in London can be the difference between a smooth portfolio and a stressful one. Strong tenant screening matters more than ever, which is why we cover the tenant red flags South London landlords miss.
Three priorities for the second half of 2026
- Review your financing. With three buy-to-let cuts in June alone, landlords coming off older fixes should run the numbers on remortgaging now.
- Stay compliant. The Renters’ Rights Act is bedding in, and enforcement is tightening. Documentation and process matter.
- Protect your yield. In a high-rent, low-supply market, minimising voids and arrears is where returns are won or lost.
For landlords seeking stability, a guaranteed rent arrangement can remove the uncertainty around voids entirely. Our guaranteed rent for landlords service is increasingly popular among South West London owners who want predictable income without the day-to-day hassle.
The OS perspective
Our read on this week’s data is that we are entering a more landlord-friendly phase on finance, but not a easier one on regulation or affordability. Cheaper money will tempt buyers back, yet the supply shortage that drives rents is structural and will not resolve quickly. Short-term lets growing at over 11% a year only deepen that hole.
For tenants, the message is harder: competition for quality homes in Wandsworth, Clapham and Putney will stay fierce, and those hoping for price falls to unlock buying may be disappointed. The smart move for both sides is to work with a best property management company in southwest London that understands the local nuances of pricing, demand and compliance.
As one of the Top rated Southwest London letting agents, we continue to see strong demand from professional tenants and steady appetite from investors who recognise that South West London’s blend of green space, transport links and good schools keeps it resilient through every cycle. Whether you are buying, selling or letting, getting the local detail right is everything.
If you would like a tailored view on your property or portfolio, our team is always happy to help. You can get in touch with us to discuss your next move.
For more weekly UK and London property news, keep an eye on our regularly updated analysis as the market heads into the second half of 2026.