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A law built for the general tenant, tested hardest on student housing

The Renters' Rights Act 2025 has been framed, rightly, as the biggest shake-up of the private rented sector in a generation. Section 21 "no-fault" evictions are gone. Fixed-term assured shorthold tenancies (ASTs) no longer exist for new lettings. Since 1 May 2026, every qualifying tenancy is an open-ended assured periodic tenancy (APT), terminable by the tenant on two months' notice and by the landlord only on specified statutory grounds.

For the general rental market, this is a redistribution of power towards tenants that most professional landlords can absorb, if not welcome. For student housing, which has run for decades on a rigid September-to-June cycle, the reform lands differently. The economics of a student HMO — refurbishment timing, certainty of re-letting, the marketing calendar for the next cohort — depended on a fixed end date that no longer exists by default.

Three tiers of exposure: PBSA, HMOs and the gap in between

Not every student let is affected equally, and that distinction is the first thing investors and lenders need to map onto their portfolios.

University-owned accommodation and purpose-built student accommodation (PBSA) operating under an approved code of practice (ANUK/Unipol) remain largely exempt. These providers can continue using fixed-term common law tenancies aligned to the academic calendar, sidestepping the APT regime entirely. For institutional PBSA investors, this is the closest thing to business as usual.

Non-PBSA student HMOs — the traditional three-plus-bedroom shared house let by a private landlord — get a purpose-built lifeline in Ground 4A. This new possession ground lets landlords recover a property between 1 June and 30 September to re-let to the next cohort, provided the tenancy wasn't granted more than six months before move-in, four months' notice is given, and every joint tenant is a full-time student. It's workable, but narrow, and it pushes the traditional "sign in October for next September" early-bird letting model later into the calendar.

The real exposure sits with non-PBSA, non-HMO student lets: one- and two-bedroom flats or studios let to postgraduates, couples or small groups within general private-rented blocks. These fall outside Ground 4A entirely. They convert to standard periodic tenancies with no student-specific possession route, meaning a landlord can no longer guarantee getting the property back for the next academic year. Given how much smaller student stock — particularly postgraduate and international-student housing — sits in this category, this is where REalyse-style comparables data becomes genuinely useful for reading the market in real time, rather than waiting months for national statistics to catch up.

Where the supply squeeze is likely to show up first

Our rental listings data tracks live asking rents, days on market and HMO status at postcode and local authority level, which means the university towns most exposed to this change can be flagged now rather than retrospectively. Cities with a high concentration of small, non-HMO-licensed student lets sit outside Ground 4A's protection entirely. In these markets, expect landlords to either exit the student segment altogether or convert stock towards larger, licensable HMOs where the re-letting ground still applies — a shift with obvious implications for refurbishment and planning demand in those districts.

Early signals worth watching in local rental supply data include:

• Falling new-listings volume in traditionally student-dense postcode districts ahead of the 2026/27 academic year, as landlords hesitate to commit to lettings they can no longer guarantee ending on time.

• Rising average days on market for student HMOs re-let mid-cycle, since periodic tenancies remove the predictable September changeover that let agents relied on to batch viewings and minimise voids.

• A pickup in landlord-owned HMO stock coming to market for sale, echoing the wider trend where research in early 2026 suggested around four in ten landlords were weighing an exit from the private rented sector within the year — a dynamic that matters as much for buyers assessing HMO comparables as for vendors pricing an exit.

• Widening gaps between asking and achieved rent in exposed postcode districts, where landlord caution on relet timing may translate into softer pricing power despite persistent student demand.

Compliance load adds a second layer of friction

Beyond possession mechanics, non-exempt student landlords now face a ban on rent in advance beyond one month — a direct hit to the common practice of taking six or twelve months upfront from overseas students as a credit-risk buffer — alongside mandatory registration on a national landlord database, an ombudsman scheme, and compliance with the Decent Homes Standard and Awaab's Law timeframes for hazard repairs. For portfolio landlords and smaller operators without in-house compliance teams, this stacks operational cost onto an already tighter margin picture, and is a plausible accelerant for the "at least 15% below market" refurbishment-opportunity segment REalyse tracks in undervalued, description-flagged stock.

Outlook

The Renters' Rights Act's effect on student and wider rental supply won't be uniform. PBSA-heavy cities with strong exemption coverage should see limited disruption, and institutional investors with exposure there can likely treat this as a compliance footnote rather than a strategic risk. University towns dominated by small private landlords letting outside the HMO-qualifying threshold — smaller cathedral cities, or towns with a large postgraduate and international cohort housed in general PRS stock — are the ones to watch for genuine supply tightening, longer void periods and a widening gap between properties that can use Ground 4A and those that cannot.

For investors, lenders and developers, the immediate opportunity is informational: identifying which local markets carry the highest concentration of exposed private student stock, and whether that gap is being filled by PBSA delivery or simply left unmet. Comparables, HMO stock data and planning pipeline visibility, read together, are the fastest way to answer that before the next academic year's letting cycle confirms it in the numbers.