London Rental Supply Is Shrinking: Why Mid-Term Lets Are the Smartest Landlord Play Right Now

The Supply Crunch Just Got Tighter

The latest RICS Residential Market Survey, released in June 2026, paints a picture that every London landlord should be paying close attention to. Landlord instructions continue to fall, rental supply is dwindling at an accelerating pace, and tenant demand remains stubbornly strong. You can read the full report coverage on Landlord Today.

In any normal market cycle, shrinking supply and rising demand would mean one thing: landlords with available properties could command significantly higher rents. And they can, but only if they're using the right strategy.

Here's the problem. The Renters' Rights Act now limits rent increases on assured shorthold tenancies to once per year and bans rental bidding outright. If you're letting on a traditional long-term basis, you're essentially locked into a price ceiling that doesn't reflect the real market premium your property could achieve.

So what's a savvy London landlord to do? Increasingly, the answer is mid-term rentals.

What Are Mid-Term Rentals, and Why Do They Matter Now?

Mid-term rentals typically cover stays of one to three months, sometimes stretching to six. They sit in that sweet spot between traditional short-term lets (nightly or weekly) and standard long-term tenancies.

The tenants in this segment are distinctive. Think relocation professionals who need a furnished base while they search for a permanent home, insurance housing tenants displaced by flood or fire damage, corporate contractors on fixed project timelines, visiting academics, and international executives on temporary London assignments.

These are not holiday guests. They're professionals and families who need a fully furnished, well-managed property for a defined period, and they're willing to pay a premium for quality, convenience, and flexibility.

Crucially, mid-term lets structured correctly fall outside the regulatory framework that now constrains traditional ASTs. There's no once-a-year rent increase cap to worry about. There's no bidding ban to navigate. Each new tenancy is a fresh agreement at market-clearing rates, meaning you can reprice your property every time a booking turns over.

With RICS confirming that supply is shrinking even faster in mid-2026, this pricing flexibility represents a genuine arbitrage opportunity for London landlords.

How Mid-Term Rentals Work in Practice

Setting Up Your Property

Mid-term tenants expect a move-in-ready experience. That means fully furnished spaces with quality furniture, reliable Wi-Fi, a properly equipped kitchen, and all utilities included. Your property should feel like a comfortable home, not a budget hotel and not an empty shell.

The upfront investment in furnishing and styling pays for itself quickly through the higher nightly and monthly rates these tenancies command.

Finding the Right Tenants

The mid-term rental market has its own channels. Platforms like SpareRoom, Spotahome, Blueground, and specialist corporate housing agencies all serve this segment. Insurance housing providers such as Allianz Partners and Crawford & Company actively source properties for displaced tenants. Relocation companies constantly need high-quality furnished stock.

Building relationships across these channels takes time and expertise, but the demand is real and growing.

Pricing and Revenue

A well-located, well-furnished one-bedroom flat in zones 1 to 3 can achieve £2,200 to £3,500 per month on a mid-term basis, compared to £1,600 to £2,200 on a standard AST. For two-bedroom properties, the premium is often even more pronounced. Because each tenancy resets pricing, you're never stuck below market rate the way you can be mid-tenancy on a long-term let.

Legal Considerations

This is where you need to be careful. Mid-term lets of more than 90 consecutive days to the same tenant generally don't require the same planning permissions as short-term holiday lets, but you should always check your local borough's specific rules. Lease and mortgage conditions also apply, so make sure your agreements permit this type of letting. Having a specialist operator manage compliance takes this headache off your plate entirely.

The Honest Downsides of Going It Alone

Mid-term rentals aren't a passive strategy if you're managing them yourself. Here's what catches many landlords off guard:

• Turnover management: every one to three months, you're coordinating check-outs, deep cleans, maintenance checks, and new check-ins. That's four to twelve turnovers per year instead of one.
• Marketing across multiple platforms: keeping listings live, responding to enquiries, vetting tenants, and negotiating terms takes genuine time.
• Furnishing and maintenance: included utilities, broadband contracts, and furnishing replacements all need active management.
• Void periods: without the right demand pipeline, gaps between tenancies can eat into your premium returns.

The revenue potential is clear, but the operational reality is that most landlords underestimate how much work sits behind consistently high occupancy rates.

Why Professional Management Changes the Equation

This is where the comparison gets interesting. The strategy works brilliantly, but only when it's executed consistently and professionally. A single month of void between tenancies or one badly handled turnover can wipe out the premium you worked to build.

That's exactly the gap that companies like Airhosts are designed to fill. Rather than treating mid-term lets as a DIY project, the most successful London landlords are partnering with experienced short-term and mid-term let management companies that handle everything from listing optimisation and tenant sourcing to turnovers, compliance, and dynamic pricing.

Airhosts, for example, manages the entire lifecycle of your property. That means professional photography, multi-platform distribution, guest vetting, 24/7 communication, cleaning coordination, maintenance response, and pricing strategy that responds in real time to London's shifting demand patterns. You receive the income. They handle the operations.

The Clearest Path to Hands-Off, High-Yield Income

The RICS data tells a simple story: London rental supply is falling, demand is rising, and landlords who remain in the market hold rare pricing power. But the Renters' Rights Act means you can only fully capture that premium if you step outside the traditional long-term let framework.

Mid-term rentals are the clearest arbitrage opportunity in the London property market right now, and professionally managed short-term lets that blend nightly, weekly, and monthly bookings can push returns even higher.

The question isn't whether the opportunity exists. It's whether you want to capture it yourself or let a specialist do the heavy lifting.

If you're a London landlord sitting on a furnished property, or even considering furnishing one, now is the time to act. Get in touch with Airhosts today to find out exactly what your property could earn with expert management behind it. The supply crunch won't last forever, but right now, the numbers are firmly on your side.