Unite Group (LSE:UTG) and Grainger (LSE:GRI) are both residential landlords and both FTSE 250 constituents, collecting rent from individuals rather than businesses. That is largely where the resemblance ends. Unite houses students in purpose-built blocks let around the academic year; Grainger lets homes to working households on ordinary tenancies.

That difference answers the headline's "why". The two are exposed to different Demand drivers: university admissions and international student flows on one side, wages, household formation and a long-running housing shortage on the other. They also let on different rhythms and under increasingly different rules.

Their 2026 updates sharpen the contrast. Unite has cut its rental growth expectations and is shrinking its portfolio; Grainger is reporting steady rental growth under the new Renters' Rights regime while working to reduce debt. This explainer draws on both companies' own announcements.

Two rental markets

Purpose-built student accommodation (PBSA) is housing designed for students, usually let room by room on contracts tied to the academic year. Build-to-rent (BTR) is housing designed and professionally managed for long-term letting rather than sale.

Both companies are real estate Investment trusts (REITs), a regime that exempts qualifying property income from UK corporation tax in exchange for distributing most of it to shareholders.

Regulation is where the paths diverge. Grainger reports that the Renters' Rights Act came into force on 1 May 2026, describing it as the biggest regulatory change to the rental market in 40 years. Student housing, with its fixed academic-year cycle, operates on a different letting model, so the reforms do not bear on the two businesses in the same way.

Unite: a smaller, more focused student landlord

Unite, which trades as Unite Students, is a large UK owner-operator of PBSA. Its financial year runs to 31 December. It completed the Acquisition of Empiric Student Property, now operated as Hello Student, on 28 January 2026 for £502.3m in shares.

Its interim results for the six months to 30 June 2026, published on 28 July, showed adjusted Earnings Per Share (EPS) down 8% to 27.1p and an unchanged Interim Dividend of 12.8p. EPRA net tangible assets (NTA), a standard measure of underlying net asset value, fell 9% to 865p per share, while the portfolio (Unite's share) was valued at £6.7bn after a 6.4% like-for-like decline. Loan-to-value (LTV) rose to 36% from 26%, following the acquisition and a £165m share buyback. Unite has raised its expected cost synergies from the Empiric deal to £18m a year from FY2027.

Strategy is now about focus. Unite plans to reduce its estate from about 72,000 beds in 29 cities to 55,000–60,000 beds in around 20, concentrating on higher-demand universities, and targets £300m–£400m of disposals (its share) in 2026.

The letting season has since closed with softer pricing. In its reservations update on 17 September, Unite said 95% of Unite Students beds were reserved for 2026/27, matching the prior year, and Hello Student reached 91% (2025/26: 84%). However, it now expects rental growth to be broadly flat, against earlier guidance of 1% to 2%, and like-for-like income growth of 0.5% to 1.0%. It reiterated FY2026 adjusted EPS guidance of 41.5p to 43.0p.

Grainger: rolling tenancies and a deleveraging plan

Grainger describes itself as the UK's largest listed residential landlord and a leader in BTR, alongside a smaller portfolio of legacy regulated tenancies. Its financial year ends on 30 September.

Its half-year results to 31 March 2026 showed net rental income up 7.8% to £66.1m, EPRA EPS of 4.2p (4.1p) and an interim dividend up 3.0% to 2.94p. Like-for-like rental growth was 2.9% for BTR and 5.9% for regulated homes. EPRA NTA was 290p per share, down 3%, and LTV was 40.2%, with net Debt of £1,524m at an average cost of 3.2%.

Grainger's plan targets EPRA earnings of £72m by FY29, 35% above FY25, while cutting LTV towards about 30% and reducing net debt by £300m–£350m.

Its trading update for the 11 months to August, published on 7 September, reported BTR like-for-like rental growth of 3% and occupancy of 96%. Grainger said demand remained firm, averaging about 1,400 customer enquiries a week, with no increase in notices to leave or rent challenges since the Renters' Rights Act took effect, and it identified a pool of about £850m of non-core assets for accelerated recycling. Full-year results are scheduled for 19 November 2026.

How the two models compare

The student model concentrates letting risk into one window each year. Once a year is let, income is largely fixed, but pricing is also locked in, which is why Unite's cut to rental growth matters for 2027 earnings as well as 2026.

The BTR model spreads risk across the calendar. Tenancies turn over continuously, so rents can be reset gradually, but rent-setting is now subject to the new tenancy rules.

On our reading, both companies are prioritising balance-sheet repair: Unite through disposals after a debt-funded buyback and acquisition, Grainger through asset recycling to bring LTV down from above 40%. Both are carrying more Leverage than they intend to hold long term.

Risks and dates to monitor

For Unite, the main sensitivities are international student recruitment, UK visa policy, university finances and new Supply in individual cities, together with delivery of its disposal programme.

For Grainger, the watch points are its full-year results on 19 November 2026, the pace of non-core disposals, delivery of pipeline schemes and any change in tenant behaviour under the Renters' Rights Act.

Both are exposed to interest rates, which influence valuations and refinancing costs.

Two routes, not one trade

Unite (LSE:UTG) and Grainger (LSE:GRI) both offer exposure to UK rental demand, but through different doors. Unite's results hinge on one annual letting season shaped by higher education, and 2026 has brought flat pricing; Grainger's rest on steady household demand and a plan to grow earnings while cutting debt.

Understanding which demand driver, letting cycle and regulatory regime sits behind each company is the starting point for interpreting their next results.