Guaranteed Rent Schemes Are Broken: How the Renters' Rights Act Is Costing London Landlords Thousands

The Market Has Shifted, and Guaranteed Rent Is Feeling the Squeeze

New data reported by The Negotiator reveals that the number of tenants receiving rent increases has dropped by 23% since the Renters' Rights Act came into force. For landlords on guaranteed rent schemes, this isn't just a headline. It's a direct hit to your income, both now and for quarters to come.

The reason is structural. The Act's once-a-year rent increase cap and its ban on competitive bidding have fundamentally changed how rents move in the market. And for guaranteed rent operators who depend on repricing tenancies upward at renewal, that change has broken the core economics of their model.

If you're a London landlord currently locked into a guaranteed rent deal, or considering one, this is the moment to understand what's really happening beneath the surface.

How Guaranteed Rent Schemes Actually Work

Guaranteed rent (sometimes called rent-to-rent) is a simple concept on the surface. A third-party operator leases your property from you at a fixed monthly rate, then sublets it to tenants at a higher rent. You get a predictable income with no voids, no tenant headaches, and no management responsibilities. The operator pockets the margin between what they pay you and what they charge tenants.

For years, this model worked reasonably well in London's fast-moving rental market. Operators could raise rents at each tenancy turnover, keeping their margins healthy and occasionally even renegotiating the guaranteed amount upward for landlords.

The appeal is obvious: certainty. You know exactly what lands in your account each month, regardless of occupancy. For landlords who value simplicity and predictability above all else, it felt like a safe bet.

Why the Renters' Rights Act Changes Everything

The Renters' Rights Act introduced two provisions that directly undermine the guaranteed rent repricing model.

The Once-a-Year Rent Increase Cap

Landlords (and by extension, operators subletting your property) can now only increase rent once per year. Previously, operators could adjust rents between tenancies or at renewal to reflect current market conditions. That flexibility is gone. In a market where London rents have historically moved 5% to 10% annually, being locked to a single annual adjustment creates a persistent lag behind true market value.

The Bidding Ban

The Act also prohibits landlords from accepting offers above the advertised rent. This means operators can no longer benefit from competitive tension in high-demand areas. In boroughs like Hackney, Islington, and Wandsworth, where multiple applicants would routinely bid above asking, this represented a significant source of margin for operators.

Together, these two changes compress the spread between what an operator pays you and what they can charge tenants. And when margins shrink, operators do one of two things: renegotiate your guaranteed amount downward, or walk away entirely.

What This Means for Your Guaranteed Rent Income

Here's the uncomfortable reality many London landlords are already experiencing.

Operators are approaching landlords at renewal with lower offers. Properties that were guaranteed at £2,000 per month are being re-quoted at £1,800 or £1,750. Some operators are simply not renewing agreements at all, leaving landlords scrambling to find new management solutions at short notice.

The 23% drop in rent increases reported since the Act took effect means the market isn't moving the way it used to. Operators who built their financial models on regular, meaningful rent uplifts are now staring at margins that don't justify the risk of guaranteeing your income.

And here's the part that really stings: if you're mid-contract on a guaranteed rent deal, you're locked into a below-market fixed income with no mechanism to catch up. Every quarter that passes with rents rising (even modestly) around you while your guaranteed amount stays flat is a quarter where you're losing ground.

At Airhosts, we've spoken with dozens of London landlords in exactly this position over recent months. The pattern is consistent: the certainty that made guaranteed rent attractive has become a ceiling that limits your returns.

The Hidden Costs You Might Not Be Counting

Beyond the headline rent figure, guaranteed rent schemes often come with costs that landlords overlook.

Property condition is a big one. Operators subletting to tenants have less incentive to maintain your property to a high standard, especially when their margins are under pressure. When the agreement ends, landlords frequently discover wear and tear well beyond what they'd expect from a professionally managed tenancy.

Lack of transparency is another issue. Most guaranteed rent contracts give you very little visibility into who is living in your property, what rent is actually being charged, or how the property is being marketed. You're trusting an operator whose financial incentives may no longer align with yours.

Contractual lock-in periods, typically 12 to 36 months, mean you can't pivot to a better strategy even when market conditions change. In a regulatory environment that's evolving rapidly, that inflexibility carries real cost.

There's a Better Model for London Landlords

If you're re-evaluating your guaranteed rent arrangement (or watching your operator prepare to renegotiate downward), it's worth asking a broader question: is there a strategy that delivers strong, consistent income without the structural limitations that the Renters' Rights Act has exposed?

Professionally managed short-term lets offer exactly that.

Short-term letting in London, when done properly, typically generates 30% to 60% more gross income than a traditional long-term tenancy. Crucially, pricing is dynamic. Rates adjust nightly based on demand, seasonality, and local events. There's no once-a-year cap, no bidding ban, and no dependence on a single tenant's willingness to accept a rent increase.

The common objection is complexity. Managing listings, guest communications, cleaning, key exchanges, and compliance can feel overwhelming. That's exactly why companies like Airhosts exist.

How Airhosts Makes Short-Term Letting Simple and Profitable

At Airhosts, we handle every aspect of short-term let management for London landlords. From professional photography and listing optimisation to dynamic pricing, 24/7 guest support, cleaning coordination, and full regulatory compliance, we turn your property into a high-performing asset without you lifting a finger.

Our landlords benefit from:

• Dynamic pricing that captures peak demand in real time, not once a year
• Full transparency with real-time dashboards showing your bookings, income, and property status
• Professional property care with inspections after every guest stay
• Regulatory expertise to keep you compliant with London's short-term let rules
• No long-term lock-in, because we believe our results should speak for themselves

While guaranteed rent operators are cutting valuations and walking away from contracts, our landlords are seeing their income grow quarter after quarter.

The Bottom Line

The Renters' Rights Act hasn't just tweaked the rental market. It has structurally broken the repricing mechanism that made guaranteed rent schemes viable. If you're still relying on a guaranteed rent operator to deliver competitive returns on your London property, the numbers are moving against you every month.

You don't have to choose between certainty and strong returns. With the right management partner, you can have both.

Get in touch with Airhosts today for a free property income assessment. Let us show you exactly what your property could earn as a professionally managed short-term let. Visit airhosts.co.uk or call our London team directly. Your property deserves better than a shrinking guaranteed rent cheque.