Landlords Are Quietly Abandoning Buy-to-Let for HMOs — Here's the Data

The FOI Data That Should Alarm Every Buy-to-Let Landlord

Specialist landlord insurer Just Landlords submitted Freedom of Information requests to councils across the UK and published their findings in April 2026. The headline figure: annual HMO licence applications climbed from 41,162 in 2018 to a record 57,725 last year — a 40% increase in under a decade, reported by [propertyportfolioinvestor.co.uk](https://propertyportfolioinvestor.co.uk/investment-insights/hmo-applications-surge-40-percent-landlords-shared-housing/).

That's not a blip. That's a structural shift.

Clark Ross, managing director of Just Landlords, called it a "major evolution" in the UK rental market. I'd go further. What the data shows is a rational, market-driven exodus from a model — the traditional single-let buy-to-let — that has been systematically squeezed by rising mortgage rates, Section 24 tax changes, and a regulatory tide that shows no sign of turning.

The landlords who are pivoting aren't panicking. They're calculating.

The Yield Gap Is the Whole Story — And It's Widening

Here's the maths that's driving the pivot. Standard buy-to-let properties in the UK are currently delivering gross yields of roughly 5–6%. HMOs, where you let individual rooms to multiple tenants rather than the whole property to one household, are delivering 8–12% gross, according to analysis published by Quartico in April 2026.

That gap — call it 4 to 6 percentage points — sounds manageable in isolation. But stack it against the context: a landlord who remortgaged at 2% in 2021 is now refinancing at 5–6%. Their net margin on a standard BTL has been effectively wiped out or turned negative. The same property, converted to an HMO, can flip that equation entirely.

And demand isn't the problem. SpareRoom's most recent Demand Report recorded a 27% year-on-year rise in shared-room searches. Tenants are actively choosing shared living — not because it's glamorous, but because affordability is forcing it and, increasingly, because purpose-built HMOs are genuinely better places to live than they were ten years ago.

I've watched landlords resist this for years, usually citing the management complexity. That's a legitimate concern. But when the yield differential is this wide, complexity becomes a solvable problem — not a dealbreaker.

The Regional Story Nobody Is Talking About Loudly Enough

London dominates the HMO conversation — Edinburgh tops the raw application league table at 5,158 per year, Oxford sits second at 2,458, Bristol third at 1,491, according to [moneystreetnews.com](https://moneystreetnews.com/buy-to-let/landlords-pivot-to-hmo-as-shared-housing-demand-rises/). But the growth story is emphatically not in those cities.

Sandwell in the West Midlands recorded a 964% increase in HMO licence applications between 2018 and 2024 — from 28 applications to 298. West Lancashire posted 886% growth. Tower Hamlets 750%. Guildford 742%. Waltham Forest 481%.

Nearly 1,000% growth in some Midlands and Northern areas. That is not a footnote.

What it tells me is that professional investors — the ones running portfolios, not just one or two properties — have already identified the yield arbitrage in these markets. Property prices are lower, so the capital required to acquire and convert is lower, which means the yield on cost is even more attractive than the headline 8–12% gross figure.

If you're still fixated on London and the South East for HMO opportunities, you're fishing in an overfished pond. The Midlands and the North are where the numbers actually work right now.

Regulation Is Tightening — and That's Actually Good News for Serious Investors

The Just Landlords data contains a figure that gets less attention than the application surge: council inspections of HMOs are up 83% since 2018, and enforcement actions — improvement notices, prosecutions — have jumped 180%.

Some landlords read that and see threat. I read it and see opportunity.

Tighter enforcement means the casual, under-invested operators — the ones running damp shared houses with questionable fire safety — are being pushed out or forced to invest. That raises the floor quality of the sector and, critically, reduces the supply of compliant HMO stock. Less compliant supply plus rising demand equals stronger occupancy rates and more pricing power for landlords who are running their properties properly.

Clark Ross put it well: "Higher standards protect the reputation of the sector and ensure that dedicated, professional landlords aren't being undercut by sub-standard operators."

He's right. The professionalisation of HMOs is not a burden on good operators. It's a moat.

That said — and this matters — getting the compliance right from day one requires expertise. Licensing conditions vary significantly by local authority. Article 4 directions restrict permitted development rights in many areas. If you're entering the HMO market for the first time, consider consulting a qualified solicitor familiar with housing law before you commit capital.

The Financing Problem Nobody Warns You About

Here's where the pivot gets genuinely hard, and where I see investors stall out.

HMO mortgages are a different product from standard BTL mortgages. Lenders assess them differently — they want to see licensing compliance, room counts, Article 4 status, and in many cases they'll stress-test at higher rental coverage ratios. For a first-time HMO investor, getting a mortgage approved at a rate that actually makes the yield maths work is not straightforward.

For experienced portfolio landlords, the problem is often the opposite: equity is sitting locked inside existing BTL or HMO properties, and freeing it up to fund the next acquisition is harder than it should be. Mainstream lenders are cautious about complex portfolios. The product range that actually fits — specialist HMO mortgages, portfolio refinancing, bridging to fund conversions — sits mostly with lenders that don't show up on comparison sites.

This is genuinely one of the more frustrating structural problems in UK property investment. The deals are there. The financing knowledge gap is what stops most investors from executing.

ZARSK's regulated mortgage partners work specifically in this space — HMO financing and equity release from existing portfolios. If you're trying to work out how to fund your next move, [zarsk.co.uk/finance-property](https://www.zarsk.co.uk/finance-property) is the right starting point. These aren't generalist brokers; they're specialists with over a decade of experience placing exactly these kinds of deals.

Where to Find HMO Stock — and Why This Is Harder Than It Looks

Sourcing HMOs is genuinely difficult. They don't sit neatly on Rightmove or Zoopla the way standard residential properties do. Existing licensed HMOs — properties already configured, already compliant, already tenanted — are often sold off-market or through specialist channels. By the time a decent one appears on a mainstream portal, it's either overpriced or already under offer.

This is the sourcing problem I've seen trip up otherwise competent investors repeatedly. They know the yield maths. They've done the due diligence on their target area. But they can't find the actual stock.

ZARSK exists specifically to solve this. It's a constantly updated database of HMO opportunities across the UK — and I believe it's the largest of its kind in the country. The Midlands and Northern coverage is particularly strong, which maps directly onto the regions where the Just Landlords FOI data shows the highest growth trajectories.

If you're serious about acting on the trend this data describes, [zarsk.co.uk](https://zarsk.co.uk) is the practical first step. Not a research exercise — an actual search for live opportunities in the markets where the numbers work.

The 40% surge in HMO applications isn't the story. The story is what happens next. Pepper Money research suggests around 220,000 rental properties could leave the private rented sector by end of 2026 — roughly 5% of England's rental stock, per [investforproperty.co.uk](https://www.investforproperty.co.uk/student-landlords-exiting-market-in-growing-numbers/). Hamptons data from May 2026 shows landlord purchases are already back to 13.3% of all transactions — a level last seen in early 2016, per [mpamag.com](https://www.mpamag.com/uk/mortgage-types/buy-to-let/landlord-to-landlord-sales-hit-record-share-of-buy-to-let-transactions/575617). Larger, better-capitalised investors are absorbing what smaller landlords are selling. The consolidation is already underway. The question isn't whether the HMO market is growing — the FOI data settled that. The question is whether you're positioned to participate in it, or watching from the sidelines while better-financed operators take the stock.