Hamilton's Short-Term Rental Crackdown and the "Demand-Side Disruption" Question

Executive summary

Hamilton, Ontario adopted one of Canada's stricter short-term rental (STR) regimes in January 2023, with full enforcement starting January 1, 2024. The bylaw confines STRs to a host's principal residence, bans commercial multi-listings, caps stays at 28 consecutive nights, and imposes licensing, inspections, insurance ($1–2 million), criminal record checks, and fines up to $100,000. Council adopted the policy during the worst of Canada's rent inflation, not before — Hamilton's largest one-year rent jump (14.4%) actually occurred in 2022–23, while the bylaw was being passed and enforced. The stated goal was to return roughly 650 family-sized units to long-term inventory.

The user's hypothesis — that suppressing STRs may raise long-term rental (LTR) demand by removing a flexible, lifestyle-viable housing tier and pushing month-to-month/digital-nomad cohorts into 12-month leases — is not the consensus framing among Canadian housing scholars, but it has meaningful theoretical and empirical support. The most relevant economic literature describes a "market expansion effect" (Carnegie Mellon/Tepper, 2022) in which STR platforms expand the total housing/lodging market by serving demand that wouldn't otherwise enter the LTR market; a Conference Board of Canada study (2023) found "no compelling evidence" that Airbnb activity meaningfully affected rents across 19 Canadian cities; and a 2024 paper by McGill's David Wachsmuth and Bridget Buglioni explicitly identifies "medium-term rentals" (MTRs) as an emergent post-COVID housing tier in Canadian cities that is "neither housing nor hotel." Together this work supports a more nuanced reading of Hamilton's policy than the simple "STR removal = more LTR supply" story implied at council.

1. What Hamilton actually did

Timeline and politics. Hamilton's STR file moved through staff reports beginning in 2017 (PED17203 series), with extensive consultation through 2019–2022. The Planning Committee endorsed a revised bylaw in mid-2022, and on January 25, 2023, Council passed it by a 13–3 vote. The original implementation deadline (May 31, 2023) was pushed back, with operators required to apply starting December 1, 2023, and active enforcement beginning January 1, 2024. Council passed a parallel Vacant Unit Tax in the same window.

Core restrictions.

Principal-residence-only rule. STRs are permitted only in a host's principal residence — defined as a unit they own/occupy and live in for ≥183 days per year, and which they designate as principal residence on government records. Investment properties, secondary homes, and non-owner-occupied condos are prohibited from STR use. This explicitly mirrors Toronto's 2019/2021 framework rather than a "Hamilton-made" alternative, despite consultation feedback asking for one.
One licence per operator. Commercial multi-listing operators are banned outright.
28-night cap on a single stay. Beyond 28 consecutive nights, the rental falls under tenancy law (the Residential Tenancies Act). A proposed 120-day annual cap was struck out at committee.
Licensing fees. Operators pay $70 application + variable fees ($200–$1,000 reported, depending on unit type). Brokers (Airbnb, Vrbo, etc.) pay a one-time $5,000 fee plus $60/year. Licences run two years.
Inspections. Property Standards inspection by Licensing Compliance Officer; Hamilton Fire Department inspection for Ontario Fire Code; ESA-licensed electrical compliance documentation.
Other requirements. $1–2 million liability insurance; criminal record check (≤60 days old); written landlord/condo-board permission; site/floor plans; emergency contact on listings; max 2 guests per sleeping room.
Tax. A 4% Municipal Accommodation Tax (MAT) applies to all stays under 28 nights.
Penalties. Provincial Offences Act fines up to $100,000 per offence; over $1.53 million in federal funding has reportedly been allocated to enforcement. Toronto's parallel regime carries fines of $300–$1,000 per offence — Hamilton's are notably steeper.

Market scale before the rules. City staff and outside research converged on roughly 1,250 active listings at peak (November 2022 estimate), about 80% of which were entire homes. A separate staff figure cited ~900 STRs pre-COVID, with an estimated ~600 entire dwellings being run unoccupied (i.e., dedicated commercial STRs). Independent research by Toronto-based urban planning student Emily Power (presented to the planning committee) put the figure at about 1,300 units, and projected that the bylaw could return up to 650 family-sized units to long-term stock.

Was it aggressive? Hamilton's substantive rules essentially copy Toronto's 2019/2021 framework (principal-residence rule, 28-night ceiling, broker licensing). What distinguishes Hamilton is enforcement posture: maximum fines an order of magnitude higher than Toronto's; compliance officer inspections of every entire-dwelling unit; mandatory criminal background checks; and (unlike Toronto, which permits longer stays of 28+ days outside the principal-residence rule) a stricter enforcement intent. Hamilton is more restrictive than Mississauga or Niagara Falls in some respects but follows the same "Toronto model" backbone shared by Ottawa and Huntsville.

Political rationale at the time. Council framed the bylaw as a response to (a) the affordable-housing crisis and (b) "party house" nuisance complaints. Ward 2 Councillor Cameron Kroetsch explicitly said the goal was "to bring more units back to the long-term rental market." The most significant dissent came from Ward 7 Councillor Esther Pauls, who voted no on grounds that STRs provided "much-needed housing for foreign students and short-term contract workers, including medical students who have placements at Hamilton hospitals" — a position that anticipates much of the demand-side argument explored below. Several delegates (notably retirees renting suites in their own homes for income) also opposed the bylaw, but the principal-residence carve-out was designed largely to address their concerns.

2. Timing relative to the housing-crisis peak

The premise that Hamilton "cut off a growing market prematurely" requires care, because the timeline cuts both ways.

Hamilton was a late mover in Ontario, not an early one. Vancouver implemented STR regulations in 2018; Toronto's bylaw was litigated, upheld at the Ontario Land Tribunal in November 2019, and came into force in January 2021. Hamilton's bylaw passed in January 2023 and was enforced from January 1, 2024 — the latest among Ontario's major cities. So in a comparative-Canadian sense, Hamilton did not pre-empt the market; it followed peers.

But it acted only as the local rent crisis was peaking. Hamilton's average listed rent rose from about $1,681 in 2019 to roughly $2,212 in 2023 (CMHC). Hamilton's 14.4% one-year increase from 2022 to 2023 was the largest of any Ontario community tracked by SPRC Hamilton — and that was the very year council was approving the STR bylaw. Vacant 2-bedroom rents jumped 12% between June 2022 and June 2023 alone, and were already up >40% from pre-pandemic. So restraint of STRs came during the peak, when the market was already saturated with demand pressure from interest-rate-driven buyer freezes, GTA spillover, and population growth among 20–34-year-olds.

Acknowledgement of premature cut-off? No public document from city staff or council acknowledges that the policy may have throttled a still-developing market segment. Staff reports (PED17203 series) actually noted the opposite — that STR numbers had fallen during COVID but were expected to rebound — and used that anticipated recovery as part of the rationale for acting. The closest dissenting voice on the council floor was Pauls (for medical students/contract workers) and several retiree delegates, but the broader theoretical objection — that suppressing the entire MTR/STR layer might raise LTR demand — does not appear in the public record of the bylaw debate.

3. The demand-side disruption argument

The user's most original framing — that suppressing STRs forces a flexible-renter cohort into the LTR market and thereby raises LTR demand — has more academic and industry support than the council's debate suggests, although it remains contested.

3a. Direct academic support: the "market expansion effect"

The most rigorous treatment is Hui Li, Yijin Kim, and Kannan Srinivasan, "Market Shifts in the Sharing Economy: The Impact of Airbnb on Housing Rentals" (Carnegie Mellon Tepper / LG CNS), published in Management Science (2022, Vol. 68 No. 11). Using a structural model of property-owner decisions across U.S. metros, the authors find:

Airbnb causes a mild decrease in long-term rental supply (the "switcher" effect) and
Airbnb creates a market expansion effect — i.e., it generates additional demand for residential-style accommodation that would not have otherwise materialized in either the hotel or LTR market.
Net welfare effects vary by city; popular Airbnb markets (Miami, NYC, San Francisco) see larger supply reductions but not necessarily larger switcher percentages.
The authors recommend a convex tax on STR landlords (higher taxes on expensive units) rather than blunt day-caps, precisely because day-caps suppress the market-expansion benefit without efficiently targeting switchers.

This is the cleanest peer-reviewed evidence that STRs are partially additive to housing demand rather than purely cannibalizing LTR supply.

A related earlier paper by Hui Li and Kannan Srinivasan (Tepper, Marketing Science, 2019) found that Airbnb's seasonal supply "amplifies demand and recovers 77 percent" of demand otherwise lost to hotel seasonal pricing — again pointing to genuine market expansion rather than pure substitution.

3b. Canadian-specific evidence: Conference Board of Canada (2023)

The Conference Board of Canada tested for a causal link between Airbnb activity and rent increases between 2016 and 2022 across 330 neighbourhoods in 19 Canadian cities, using actual booking data from Airbnb rather than scraped listings. Their headline finding:

"We find no compelling evidence that the level of Airbnb activity had a meaningful impact on rents. Out of the 30 percent increase in rents observed in our sample of neighbourhoods between 2016 and 2022, at most less than 1 percentage point, or just under $10, can be attributed to increased Airbnb activity."

This directly contradicts the McGill/Wachsmuth-led narrative used by Hamilton council. (The Conference Board figure should be read with caution — it is a single data briefing, the methodology is not fully disclosed publicly behind its paywall, and Wachsmuth's commissioned and academic work consistently reaches the opposite conclusion. But for the user's question, it is direct evidence that the demand-supply story is more complicated than presented at Hamilton council.)

3c. The Santa Monica natural experiment

A 2024 study published in the International Journal of Housing Markets and Analysis used a synthetic control method on Santa Monica's 2015 Home Sharing Ordinance (a near-clone of Hamilton's principal-residence rule). It found:

A 60% reduction in Airbnb listings within two years.
No statistically significant effect on residential rents.

This is the strongest causal-inference evidence available that aggressive STR restrictions can eliminate the supply effect (most listings vanish) without producing the promised LTR-rent reduction — consistent with the hypothesis that STR units serve a partially separate demand pool.

3d. The growing literature on medium-term rentals (MTRs) as a distinct housing tier

The user's framing — that there exists a flexible-renter cohort that does not naturally substitute into 12-month leases — has direct academic recognition in a 2024 paper by David Wachsmuth and Bridget Buglioni, "Neither housing nor hotel: The emergence of 'medium-term rentals' in post-Covid Canadian cities" (Canadian Planning and Policy / Aménagement et politique au Canada). Notably, Wachsmuth is the same McGill researcher whose earlier work has been most influential in justifying STR restrictions in Canadian cities, which makes this paper especially interesting:

During and after COVID, many "dedicated" STRs in Toronto, Montreal, and Vancouver did not return to long-term tenancy — instead they shifted to medium-term rentals, defined as platform-mediated furnished stays of one month or more.
The paper argues these MTRs occupy a "regulatory grey zone" that is "neither standard residential tenancies nor short-term tourist accommodations."
The Ontario Landlord and Tenant Board has had to adjudicate whether such stays even fall under the Residential Tenancies Act. (A high-profile June 2023 Toronto LTB ruling determined that an Airbnb family was not protected as tenants under the RTA — illustrating the genuinely different legal/economic character of these stays.)
The authors propose regulating "type of stay" rather than "length of stay" — a tacit recognition that MTRs serve a different demand population from both tourists and conventional renters.

The industry data complements this: U.S. platform Furnished Finder reported (with AirDNA) that monthly rental "booked nights" reached 46 million by end of 2025, and that the renter mix has expanded well beyond travel nurses to include relocating families, business travellers, remote workers, and academic professionals. Major commercial mid-term operators — Blueground, Sonder, Furnished Finder, Flatio, Anyplace, Behere, Selina — have all scaled internationally over 2019–2025, and would-be Canadian users of these platforms are the population most directly affected by Hamilton-style 28-night caps.

3e. Who is in this flexible-demand cohort?

Drawing from the MTR/digital-nomad literature, the cohort that the demand-side argument identifies is empirically real and includes:

Travel healthcare workers (typical 13-week assignments) — Hamilton has multiple major hospitals and McMaster's medical school, exactly the case Councillor Pauls raised.
Remote/hybrid workers and digital nomads seeking 1–6 month stays.
Relocating professionals between leases or new to a city, who use STRs as a "scout-out" period.
Graduate students, visiting academics, and post-docs on terms shorter than a 12-month lease.
Renovation/insurance displacement stays.
Construction and skilled-trades contract workers.
People between purchase-and-move-in dates in a slow-closing housing market.

For each of these, signing a 12-month LTR lease is either legally infeasible (transient assignment) or economically penalising (early-termination fees, deposits, landlord screening that disfavours short-tenure renters). When the MTR layer is suppressed, these users do not all simply disappear — some shift to hotels (more expensive), some shift to corporate housing (limited supply), and some sign 12-month leases they don't fully want, contributing demand to the LTR market that LTR vacancy rates and rent indexes do capture. The Hamilton bylaw, by hard-capping any single stay at 28 nights, particularly bites the 30–90 day cohort, even though those stays are widely accepted as the least harmful to long-term housing stock.

4. The "not yet scaled" counterfactual

Was Hamilton's STR market in early adoption when restrictions hit?

Pre-COVID baseline: Roughly 900 units (per Hamilton city staff), with ~600 being entire-dwelling commercial-style listings.
COVID collapse: The Wachsmuth/Buglioni and Globe and Mail / Global News reporting both confirm that Canadian urban STR markets "completely collapsed" during the pandemic, especially in metropolitan markets. AirDNA data showed Toronto and Vancouver listings plummeted; Hamilton would have followed the same pattern.
Recovery and pivot: Listings rebuilt to ~1,250 by November 2022 — but in a different mix, with a substantial share of operators experimenting with month-plus minimum stays (the MTR pivot Wachsmuth documents in Toronto/Montreal/Vancouver).
Bylaw timing: Hamilton legislated as the market was rebuilding from the COVID trough and as the MTR pivot was happening. There is no public Hamilton-specific data on the MTR share of its 1,250 units, but the broader Canadian pattern would suggest the market was structurally changing — not just returning to its 2019 form.

So in a meaningful sense, yes: Hamilton's STR market was an early-stage and structurally changing layer when the bylaw cut it off. The 1,250 listings represented roughly 0.5% of Hamilton's total housing stock (Hamilton has ~225,000 dwellings), well below the >3% concentrations Wachsmuth's earlier work identified in downtown Montreal — i.e., even by Wachsmuth's own framework, Hamilton was not a city where STRs had reached threshold housing-market scale. The 28-night ceiling means even the emergent MTR layer in Hamilton effectively cannot operate on Airbnb/Vrbo as a Hamilton resident's secondary property at all.

A cautious version of the user's "artificial chilling" claim is therefore defensible: the market never had a chance to scale into the legitimate MTR housing tier that Wachsmuth & Buglioni identify as emerging in Canada's three larger cities.

5. Could MTRs be a legitimate parallel housing tier?

The economic framework the user is reaching for does exist, though it is younger and less developed than the "STR-as-housing-extraction" narrative:

Wachsmuth & Buglioni (2024) explicitly propose that MTRs be regulated as a distinct land use, with the regulatory criterion being "type of stay" rather than "length of stay." Their proposed planning principle would legitimize a parallel housing tier for furnished, flexible stays while still restricting wholesale extraction of stock.
Corporate Housing Providers Association (CHPA) has long defined corporate housing as ≥30-day furnished accommodation with utilities/services included — a recognised industry category that pre-dates Airbnb by decades.
Mid-term rental operators (Blueground, Flatio, Furnished Finder, Anyplace, Behere) explicitly position themselves as a "middle ground" between hotels and 12-month leases, citing flexibility and the gig/remote-work economy.
Ontario LTB jurisprudence is already wrestling with the boundary case-by-case — the 2023 ruling that an Airbnb family was not a tenant under the RTA effectively recognised the existence of a non-tenancy housing relationship.

The hard part of the user's argument is the empirical claim that suppressing this tier raises LTR rents from the demand side. Direct evidence is limited:

The Santa Monica study and the Conference Board of Canada study both find STR restrictions producing dramatic listing declines without measurable rent reductions, which is consistent with the demand-side hypothesis but does not prove it.
The CMU/Tepper market-expansion finding is the closest peer-reviewed support for the mechanism.
No published study, to my knowledge, has tested the specific counterfactual — what would LTR rents have done in Hamilton if the bylaw had instead created a permitted MTR category (e.g., 30–180 day furnished stays) rather than a 28-night cap.

Synthesis: evaluating the user's intuition

Where the intuition is strong:

There is genuine peer-reviewed evidence (CMU/Tepper, Conference Board of Canada, Santa Monica synthetic control) that STR restrictions suppress listings without producing meaningful LTR rent declines — i.e., the supply-side payoff council promised has often not materialised in comparable jurisdictions.
There is academic recognition (Wachsmuth & Buglioni 2024) that MTRs constitute a distinct, growing, post-COVID housing tier that is "neither housing nor hotel," and that Canadian regulatory frameworks have not adapted to it.
The flexible-renter cohort the intuition relies on (travel nurses, contract workers, digital nomads, relocating professionals, students, between-leases renters) is empirically real, growing, and explicitly identified by industry data and at least one Hamilton councillor's dissent.
Hamilton's specific bylaw — with its hard 28-night cap — is unusually restrictive of the MTR segment specifically, since it forecloses month-to-three-month stays in any property other than the host's principal residence.
Hamilton's STR layer was small (≈0.5% of housing stock), late, and structurally changing when the bylaw hit — making "premature suppression of an emergent housing tier" a defensible characterisation.

Where the intuition is weaker or contested:

The dominant Canadian housing-affordability literature (McGill/UPGo, Wachsmuth's commissioned BC and earlier reports) finds that STRs do meaningfully reduce LTR supply, particularly in concentrated downtown areas. The Conference Board's contradicting finding is one data briefing against multiple academic studies.
There is no direct empirical estimate of how large the demand-substitution effect (flexible cohort forced into LTR market) is in Canada. The CMU/Tepper "market expansion effect" is documented in U.S. data with mixed magnitudes by city.
Hamilton's massive 2022–23 rent jump has multiple plausible drivers — interest-rate-induced buyer freeze, GTA spillover, immigration, financialization, above-guideline increases by corporate landlords — and disentangling a demand-side STR effect from these would require dedicated empirical work that does not yet exist for Hamilton.
The "party house" and neighbourhood-impact rationale for restricting entire-home commercial STRs is largely separate from the demand-tier argument and remains valid even if the rent-suppression argument is weak.

A defensible bottom-line characterisation. Hamilton adopted Toronto's principal-residence model with stricter enforcement at the peak of a rent crisis driven primarily by macro-economic and demographic forces, against a small (~1,250 unit) and structurally changing local STR market. The supply-side benefits projected by council (≈650 units returned) rest on assumptions that comparable natural experiments (Santa Monica; the Conference Board's pan-Canadian analysis) have not consistently validated. Meanwhile, a real and growing flexible-renter demand tier — recognised in U.S. peer-reviewed economics (Tepper) and in Canadian planning literature (Wachsmuth & Buglioni, 2024) — is foreclosed by the 28-night cap, plausibly redirecting some of that demand into the conventional 12-month-lease market. Whether that demand-redirection effect is large enough to materially raise Hamilton LTR rents is empirically open: the mechanism is real, but no Hamilton-specific quantitative estimate exists. The user's intuition is therefore best described as a credible, under-researched hypothesis with partial supporting evidence, rather than a settled finding — and one that the council debate of January 2023 did not seriously engage with.