London's 90-Night Rule Explained: Why It Actually Favours Serviced Accommodation Landlords

The Amateur Landlord Era Is Ending, and London's Rules Are Accelerating It

If you've been following the property press this month, you'll have spotted a recurring theme: small-scale buy-to-let landlords are exiting London's private rented sector in record numbers. Between rising mortgage costs, tightening tax relief, and an increasingly complex regulatory landscape, the economics of traditional BTL simply don't stack up for many individual investors anymore.

But here's what makes July 2025 especially significant. Westminster, Camden, and several other central London boroughs are now actively enforcing the 90-night rule on short-term lets, with fines reaching £20,000 or more for repeat offenders. For amateur Airbnb hosts who've been casually listing spare flats on weekends, this is a serious problem. For professional landlords and investors who understand how to work within the rules? It's one of the biggest opportunities in London property right now.

Let's break down what the 90-night rule actually means, why it's widely misunderstood, and how it creates a clear competitive advantage for professionally managed serviced accommodation.

What Is London's 90-Night Rule, and Why Does It Matter?

The 90-night rule is part of the Deregulation Act 2015. In simple terms, it says that in Greater London, you cannot let out an entire residential property on a short-term basis for more than 90 nights per calendar year without obtaining planning permission for a change of use.

The key word here is "short-term," which generally means lettings of fewer than 90 consecutive nights per booking. This is where the confusion begins.

Many landlords assume the rule means you can only let a property for 90 nights total, full stop. That's not accurate. The restriction applies specifically to short-term holiday-style lets. If your bookings are for 90 nights or longer per stay, the rule doesn't apply in the same way. Your property is functioning as temporary residential accommodation, not a holiday let, and no change-of-use planning permission is typically required.

This distinction is everything.

Why Serviced Accommodation Beyond 90 Nights Is a Sweet Spot

Think about who actually needs accommodation in London for three months or more. The list is long and the demand is robust:

• Corporate relocations: Companies moving employees to London regularly need furnished, fully serviced flats for 3 to 12 months.
• Contractor placements: Infrastructure projects, tech rollouts, and consulting engagements frequently require London-based housing for project teams.
• Insurance and relocation tenants: Displaced residents awaiting home repairs often need well-managed temporary housing.
• International professionals: Executives, researchers, and diplomats on fixed-term assignments want something better than a hotel but more flexible than a 12-month AST.

This corporate and mid-stay segment is growing fast, and it remains significantly underserved. Hotels are expensive. Traditional rentals are inflexible. Serviced accommodation sits perfectly in the middle, offering the comfort of a home, the amenities of a hotel, and the flexibility that corporate tenants demand.

Best of all, lettings of 90 nights or more per booking sidestep the short-let cap entirely. No planning applications. No risk of enforcement action. No 90-night countdown clock ticking in the background.

What Landlords Transitioning from BTL Need to Know

If you're a landlord considering the move from traditional buy-to-let into serviced accommodation, here are the practical essentials.

Furnishing and Presentation

Corporate tenants expect a higher standard than typical rental stock. Think quality furniture, fast Wi-Fi, a fully equipped kitchen, good linens, and a clean, modern aesthetic. The upfront investment in furnishing pays for itself quickly through the premium rates these stays command.

Pricing Strategy

Mid-stay serviced accommodation in London typically commands 20% to 40% more per month than a standard AST, depending on location and quality. You're not competing on nightly rates with Airbnb holiday lets. You're competing with apart-hotels, and you can usually offer better value with better margins.

Compliance and Contracts

Stays of 90 nights or more usually fall under standard residential tenancy frameworks, which means you'll want appropriate agreements in place. Council tax obligations, safety certifications (gas, electrical, fire), and insurance all need to be correctly structured for serviced accommodation use.

The Operational Reality

Here's where honesty matters. Running a serviced accommodation operation well is not passive. You need responsive guest communication, professional cleaning between stays, maintenance coordination, inventory management, and a reliable booking pipeline. Corporate clients and relocation agents expect a seamless, professional experience. One missed check-in or poorly handled maintenance issue can cost you a long-term corporate account.

This operational complexity is exactly why the amateur landlord model is fading. It's also why companies like Airhosts exist.

The Pitfalls Worth Watching For

No strategy is without risks, and it's worth being clear-eyed about the challenges:

• Void periods: Mid-stay bookings are lumpy. A single cancelled three-month booking can leave a significant gap in your calendar if you don't have a strong pipeline.
• Furnishing costs: Setting up a property to corporate standard requires genuine capital outlay, typically £5,000 to £15,000 depending on the size and condition of the flat.
• Management intensity: As noted above, this is a hospitality business as much as a property business. Treating it like a traditional rental is a recipe for poor reviews and lost bookings.
• Market knowledge: Pricing a serviced flat correctly for the corporate mid-stay market requires local expertise. Overpricing means vacancies. Underpricing means leaving significant money on the table.

Why Professional Management Makes the Difference

Here's the honest reality of the serviced accommodation market in London. The strategy works brilliantly when it's executed professionally, and it tends to underperform when landlords try to manage everything themselves.

The landlords seeing the best returns in this space are the ones who've recognised that their role is as a property investor, not an accommodation operator. They own the asset, set their financial goals, and let a specialist management company handle everything else.

This is where the comparison becomes stark. A self-managed serviced accommodation operation requires you to handle marketing across multiple platforms, respond to enquiries at all hours, coordinate cleaners and maintenance, manage check-ins, stay on top of compliance, and continuously optimise pricing. It's a full-time job, and doing it at half capacity produces half results.

Professionally managed short-term and mid-stay lets, by contrast, deliver the income premium without the operational burden. At Airhosts, we manage the entire guest experience from listing optimisation and dynamic pricing through to cleaning, maintenance, and 24/7 guest support. Our landlords receive consistent, transparent income reports while we handle the complexity behind the scenes.

The Clearest Path Forward for London Landlords

London's property market is professionalising rapidly. The 90-night rule isn't a barrier. It's a filter that rewards well-managed, compliant serviced accommodation and penalises casual, unmanaged short-term lets. For landlords exiting traditional BTL or looking to maximise yields on London property, this regulatory environment is genuinely favourable, if you position yourself correctly.

The corporate mid-stay market is growing. Enforcement is tightening against non-compliant operators. And professional management is no longer a luxury. It's the difference between a property that generates premium, hands-off income and one that creates endless headaches.

Airhosts helps London landlords navigate exactly this transition. Whether you're converting a former BTL flat into a high-performing serviced accommodation unit or you want to ensure your existing short-let operation is fully compliant and optimised, our team handles it all.

Ready to see what your London property could earn with professional management? Get in touch with Airhosts today for a free, no-obligation revenue assessment. Your property deserves to work as hard as you do.