Renting a room to a traveller for a few nights is not a 2008 invention. It is one of the oldest commercial arrangements there is, and it has been regulated, taxed and complained about for most of recorded history.
What genuinely changed recently is not the practice. It is the matching: who can find whom, how easily, and at what scale. That single change is what turned a cottage trade into an industry, and what produced the regulatory wave the sector is living through now.
Ancient and medieval: inns, and the origins of the guest register
Wherever there were trade routes, there was paid accommodation. Roman roads had mansiones, official waystations, and cauponae, rougher commercial inns. Pilgrimage routes across medieval Europe supported networks of hostels and monastic guesthouses.
Two features of that era survive almost unchanged.
The innkeeper's duties. English common law developed the idea that an innkeeper who held themselves out to the public took on obligations: to receive travellers, to keep their goods safe, and to answer for what happened on the premises. That framework is the distant ancestor of modern duty-of-care obligations on accommodation providers.
The guest register. Requiring innkeepers to record who was staying is very old, and it was always about the state knowing who was moving through. It is still with us: Italy's guest reporting to the police within 24 hours runs on legislation with roots in a 1931 consolidated public security law. Spain's system requires submission within 24 hours. The technology is a web portal now; the obligation is ancient.
18th and 19th century: spa towns, seaside lodgings and the boarding house
The recognisable modern shape appears with mass leisure travel.
British seaside towns, continental spa towns, and coastal resorts across Europe and North America developed economies built on letting rooms to visitors by the week. Landladies, boarding houses, and later the bed and breakfast were all short-term rental businesses in every meaningful sense.
Railways did the work. Cheap, scheduled, long-distance transport created a middle-class travelling public, and an entire class of small operators appeared to house them.
Two other 19th and early 20th century developments matter:
The purpose-built resort hotel, which professionalised and industrialised the sector, and set up a competitive tension with informal lodging that has never gone away.
Holiday cottage letting, which by the mid-20th century was a substantial business in Britain, France and elsewhere, coordinated through classified adverts, local agents and printed brochures.
The 20th century: agencies, timeshares and classifieds
By the post-war decades, the industry had a working structure that would be recognisable to anyone in the business today, minus the internet.
Holiday letting agencies took commission for matching owners with visitors, handled bookings, and often held the keys. That last detail is worth noting: professional key handling is not a modern problem, it was a core function of a rental agency for most of the 20th century.
Timeshare arrived in the 1960s and 70s, offering fractional use of resort property. It was a genuine innovation in ownership structure and acquired a poor reputation through high-pressure selling.
Classified advertising in newspapers and specialist magazines was how most independent owners found guests. The constraint was reach: your market was whoever read that publication.
1995 to 2007: the internet removes the matching problem
The first real change was not a marketplace with payments. It was simply listings that anybody could find.
1995: Vacation Rentals By Owner (VRBO) launched, letting owners list directly to travellers. Craigslist launched the same year and became a significant informal channel.
1996: Bookings.nl, later Booking.com, launched in the Netherlands. Its founding insight was booking across many providers rather than one chain.
Through the late 1990s and early 2000s, HomeAway, TripAdvisor, Expedia and others built out an online travel industry. Reviews arrived, and with them a form of distributed trust: strangers vouching for strangers.
By 2007, an independent owner could reach a global audience, take enquiries by email, and be reviewed by past guests. What was still missing was integrated payment, instant booking, and any mechanism for trusting a private individual's spare room.
2008 to 2016: the platform decade
2008: Airbnb. Two designers in San Francisco who had rented out air mattresses during a design conference the previous autumn built a site for it. The pieces they added to the existing model were integrated payments, two-way reviews, and identity verification.
That combination did something the classifieds era could not: it made a stranger's spare bedroom a viable commercial product.
The sector's growth from there was extraordinarily fast, and it changed character as it went. What began as genuine home sharing attracted professional operators, then investors, then institutional capital. Property management companies, channel managers, dynamic pricing tools, cleaning marketplaces and key exchange systems all appeared to serve operators running portfolios rather than spare rooms.
By the mid-2010s the industry had a recognisable professional layer, and cities had a recognisable problem.
2016 to now: the regulatory era
This is the part most histories of the sector skip, and it is the defining period.
The complaints were consistent across very different cities: housing supply withdrawn from residential use, neighbour nuisance, untaxed revenue, and safety in properties never designed or inspected as accommodation.
The regulatory responses fall into recognisable families, and having researched fifteen jurisdictions in detail, the patterns are strikingly consistent.
Night caps. Amsterdam, London's 90 nights, Paris at 90, Los Angeles at 120, Toronto and Sydney at 180. The mechanism is the same everywhere: permit the activity, limit its intensity.
Primary residence requirements. San Francisco's 275-night residency test, Toronto's principal residence rule, British Columbia's provincial requirement, Los Angeles's six-month test. These target the investor model specifically while protecting genuine home sharing.
Registration and platform enforcement. The decisive shift. Once a city requires a number on every listing and obliges platforms to verify it, enforcement stops depending on inspectors and complaints. New York's Local Law 18 is the clearest demonstration: listings reportedly fell from around 22,000 to about 2,300 after enforcement began in September 2023.
Building-level veto. Increasingly the layer that actually decides. Spain now requires a three-fifths majority of a building's owners. Victoria lets an owners corporation ban short stays by 75% resolution. Florida's state preemption of local rules pointedly does not reach condominium associations.
Outright phase-out. Barcelona has said it will not renew roughly 10,000 tourist flat licences when they expire in 2028, and Spain's Constitutional Court upheld the framework in March 2025.
EU-wide data rules. Regulation 2024/1028 pushes member states toward registration schemes with platform data sharing, which is why comparable systems have appeared across Europe in quick succession.
What the pattern actually shows
Three observations from the long view.
The activity is ancient; the friction is new. People have let rooms to travellers forever. What cities are responding to is not the practice but its scale and concentration, which platforms enabled.
Regulation has consistently pushed toward longer stays. Almost every jurisdiction draws a line, typically between 21 and 31 nights, above which the rules largely stop applying. The predictable result is a large and growing mid-term rental sector serving relocations, contractors, medical staff and insurance placements. That is the fastest-growing part of the market in several of the cities we have studied, and it is a direct product of regulatory design.
The obligations have circled back to the inn. Identify your guests. Report who stayed. Keep records. Answer for conduct on the premises. Be reachable when something goes wrong. A Roman innkeeper would recognise every item on that list.
Where it goes next
Two directions look reasonably clear.
Consolidation toward professional operators, because compliance has become a real cost and real work. Registration numbers, guest reporting, safety certification, tax filing and record retention favour operators with systems.
Convergence with hospitality. As short-term rental obligations come to resemble hotel obligations, the operational gap narrows. The distinction that remains is the building, not the rulebook.
Neither of those is a return to 2015, and neither is the end of the sector. It is what an industry looks like after it stops being novel.
This article draws on publicly available historical sources and on our own research into current short-term rental regulation across fifteen jurisdictions. Regulatory details reflect the position at the time of writing and change frequently. Some historical attributions, particularly for ancient and medieval accommodation practice, are necessarily general. If you spot an error, please tell us and we will correct it.
