Bromley Buy-to-Let Yields 5.2%, Holiday Lets Hit a Wall

⚠ Holiday let figures apply only within the regulatory cap. The Greater London 90-night limit (Deregulation Act 2015) restricts properties without planning permission to 90 nights of short-term letting per year, which structurally caps annual gross revenue at about £19,000.

Estimates for a typical 3-bedroom house in Bromley. Figures are modelled from market data; not guaranteed outcomes.

Both revenue figures match the Dashboard's calculation for this market.

Buy-to-let grosses roughly three times what a capped holiday let can generate in Bromley. Holiday let operating costs are also higher than buy-to-let, widening the gap further on a net basis.

Break-Even Occupancy: Holiday Let Cannot Mathematically Beat Buy-to-Let in Bromley

Even at full occupancy across all 90 permitted nights, holiday let gross revenue tops out at about £19,000, still below the buy-to-let annual rent of about £28,000. That makes the night cap the binding constraint: no occupancy assumption can close the gap because the permitted nights run out first. The actual after-costs picture is worse again, since holiday let operating costs are higher than buy-to-let.

Occupancy Sensitivity: Even Strong Demand Cannot Close the Gap

Occupancy is normally the biggest swing factor in holiday let returns, but Bromley's night cap inverts the usual logic. Stress-testing the range, gross revenue at 34% occupancy comes in around £6,600, and at 59% it reaches roughly £11,000. Both scenarios fall well short of buy-to-let's about £28,000. The implication is that operational excellence cannot rescue the strategy here, only planning permission for unrestricted use can, and that is rarely granted in residential outer-London boroughs.

Bromley Postcode Areas: Where Buy-to-Let Yields Are Strongest

Yields vary across Bromley's postcode districts, driven mostly by sale price differences rather than rent variation. The highest-yielding areas tend to sit at the borough's edges, where house prices are lower and rents remain steady on the back of London commuter demand.

Bromley (TN16) leads on yield at 5.9%, helped by a relatively low entry price of about £456,000 for a 3-bed house. St Paul's Cray/Orpington (BR5) sits at a similar level on rent multiples thanks to its more affordable about £438,000 median, while pricier pockets like West Wickham (BR4) (about £604,000) deliver lower yields despite higher rents because the price floor is sticky. These are averages per postcode area, so your specific property may sit above or below depending on bedroom count and house type, and postcode-level data is available in the dashboard.

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The 90-Night Cap Is Bromley's Defining Holiday Let Constraint

The Greater London 90-day rule, introduced under the Deregulation Act 2015, is the single most important regulatory fact for any Bromley investor weighing holiday letting. Without dedicated planning permission, properties cannot be let on a short-term basis for more than 90 nights in a calendar year, and Airbnb automatically blocks bookings beyond that threshold for London-flagged addresses. Converting to unrestricted holiday let use is treated as a material change of use and typically requires a planning application to Bromley Council, which in residential streets is rarely granted.

That ceiling is what drags the holiday let gross yield down to 1.8%. Even at the assumed 49% occupancy across the 90 permitted nights, gross revenue tops out at about £9,400, and at full occupancy the absolute maximum is about £19,000. Compared with the about £28,000 a tenanted let earns, the regulatory ceiling does most of the work in making buy-to-let the better strategy. Investors who specifically want exposure to short-stay demand without a 90-night cap will find more permissive frameworks outside Greater London, where there is no national night limit, though planning change-of-use rules can still apply locally.

Holiday Let Costs Eat the Margin Buy-to-Let Keeps in Bromley

Operating costs widen the gap between the two strategies. On the holiday let side, total annual running costs come to roughly £12,000, which against gross revenue of about £9,400 produces a net operating result of £-2,265 and a net yield of -0.4%. Buy-to-let, by contrast, runs at about £8,100 in annual costs against about £28,000 in gross rent, leaving net income of about £20,000 and a net yield of 3.7%.

For a typical Bromley 3-bed house, the holiday let cost stack includes Airbnb host fees at 15.5% of revenue (around £1,500), specialist short-let insurance of about £2,000, higher maintenance and furnishing wear of about £6,100, utilities of about £2,100 that the host bears, and council tax or business rates of approximately £0 after any Small Business Rate Relief that applies. Many qualifying holiday lets can claim Small Business Rate Relief and reduce that line to zero, though eligibility depends on availability and actual letting days. On the buy-to-let side, council tax is typically the tenant's responsibility, landlord insurance runs around £830, routine maintenance comes in lower than the holiday let figure because there is no furnishing churn, and a letting agent at roughly 10% of rent handles the day-to-day. The figures above already reflect these line items totalling to the stated cost numbers.

If you choose to add professional holiday let management instead of self-managing, add approximately £1,700 to annual costs. With holiday let already loss-making at the gross level once costs are deducted, agency management makes the strategy worse rather than better in Bromley.

Tax Implications for Bromley Investors

The Furnished Holiday Lettings (FHL) tax regime was abolished in April 2025, removing what used to be the strongest financial argument for short-letting a London property. Holiday lets and buy-to-let are now taxed equivalently for income tax, capital gains, and pension-relevant earnings purposes, which means a Bromley landlord no longer offsets the regulatory friction of the 90-night cap with a favourable tax treatment. Mortgage interest on residential lettings is restricted to a 20% basic rate tax credit rather than a full deduction, which compresses higher-rate landlords' returns particularly hard at Bromley price levels around £537,000.

On acquisition, stamp duty applies, with an additional-property surcharge of 5% stacked on top of standard bands for investors. On disposal, capital gains tax on residential property runs at 18% basic rate or 24% higher rate from 6 April 2024 onwards. Allowable expenses against rental income include repairs, landlord insurance, letting agent fees, and ground rent on leasehold properties. The exact stamp duty payable on a £537,000 purchase depends on whether the buyer already owns property, residency status, and current bands, so verify with a solicitor or conveyancer before committing. The headline takeaway is that the post-April-2025 tax landscape no longer rewards holiday letting as a structurally tax-efficient strategy, which makes the operational and regulatory burden harder to justify in capped London boroughs.

Bromley Versus the London and UK Averages

Bromley sits slightly above the London-wide gross yield average but below the UK national median, reflecting the fact that outer-London prices remain elevated relative to rents. The borough's appeal is less about headline yield and more about a stable tenant pool drawn from London commuters, school catchments, and a relatively defensive house price profile.

For a wider-London investor view, the London rental market insights hub covers comparative borough data, and our pieces on Westminster and Croydon dig into other London boroughs facing the same 90-night ceiling.

Investment Bottom Line

Bromley is a buy-to-let market, not a holiday let market. The 90-night cap, abolition of the FHL regime, and elevated holiday let cost base together push net holiday let yields negative at typical occupancy. Buy-to-let delivers a respectable gross yield of 5.2% and a net yield of 3.7% on a £537,000 3-bed house, with capital growth potential supported by Bromley's commuter fundamentals.

Data reflects market conditions as of October 2026. Across the 9 Bromley postcode districts in the dataset, yield variation is wide enough that picking the right area can lift returns by more than a full percentage point. Explore rental data in the dashboard for postcode-level detail, and review our market score methodology and data sources for how these numbers are derived.

This information is for educational purposes only and should not be considered financial or legal advice. Regulations and market conditions change frequently. Verify current rules with local authorities before making investment decisions.