By the Unity Stays directors, Marcus Chong & Gadir Al-Khatib · Last updated 12 August 2026
In short: Neither wins generally: tenure and local demand decide it. Check the lease first — short-letting restrictions rule out more flats than any commercial factor, while houses are usually freehold. Flats cost less to furnish, clean and heat and suit year-round contractor and work-travel demand; houses earn more per night from groups and families in leisure markets but cost more to service.
The leasehold problem comes first
Most UK flats are leasehold, and short-letting restrictions in leases are common — sometimes named explicitly, sometimes caught by a business-use or private-dwelling clause. In purpose-built blocks with managing agents, blanket prohibitions are increasingly standard.
That single fact removes a large share of otherwise excellent flats from consideration, and it is checkable before any offer. Our leasehold guide covers what to look for.
Houses are usually freehold, which removes the problem entirely. That is the single biggest structural advantage houses have, and it has nothing to do with what guests want.
Where flats win
On running costs and on the demand that fills the quiet months.
A one or two-bed flat is cheaper to furnish, cheaper and faster to clean, and cheaper to heat — which matters because you pay the utilities. A changeover takes an hour rather than three, and on a property doing short stays that difference compounds across a year.
Flats also suit the demand that is least seasonal: contractors, consultants, relocations, hospital staff, people working away. That demand is mid-week, longer-stay and largely indifferent to summer, which is exactly what a leisure-led property lacks in November.
Where houses win
On the guest types that pay most per night, and on control.
Groups, families and multi-generational trips need bedrooms and space, and they pay accordingly. A four-bed house in a leisure market can earn several times a one-bed flat on a peak weekend.
Houses also avoid the flat-specific frictions: no communal entrance to annoy neighbours through, no managing agent, no lift, no service charge, and usually somewhere to park. Parking alone converts a great deal of contractor demand.
The costs are proportionate. More to furnish, more to clean, more to heat, and more to go wrong.
The honest comparison
Neither type wins generally. What decides it is the demand where the property is, and whether the tenure permits it at all.
In a city with year-round work travel — a hospital, a university, a major employer, an industrial site — a flat close to it will usually outperform a house further out, because it serves demand that never stops.
In a leisure market with a strong season, a house that sleeps six will usually outperform two flats, because the peak weeks carry the year.
Model both against the specific location rather than choosing a type first. Our deal assessment guide sets out the method.
What we take on, and what we decline
We decline where the lease plainly forbids it and the owner would rather not check, because that ends badly for both of us.
We decline where the building makes safe short-let use awkward — a single means of escape, a communal entrance shared with residents whose reasonable enjoyment cannot be protected.
And we decline where demand is purely seasonal and the low months do not cover the running costs, whatever the property type. A property that is wrong for short letting does not become right because it is managed well.