BLOGS

A supply squeeze meets a regulatory reset

The UK's private rented sector is entering a new phase. With no-fault "Section 21" evictions being phased out under the Renters' Rights framework and landlords facing tighter Energy Performance Certificate (EPC) targets, licensing requirements and right-to-rent checks, the calculus for owning and letting residential property has shifted markedly since 2024.

For institutional investors and portfolio landlords, the question is no longer just "what yield can this asset generate?" but "what is the total cost of compliant ownership, and does the supply response change the demand-pricing dynamic in the meantime?" REalyse market data across major urban centres suggests the answer is playing out unevenly by city and property type — with rents firming in some markets even as time-to-let stretches in others.

What the numbers show: rents re-accelerating, lettings taking longer

REalyse's tracking of asking rents across London, Manchester, Birmingham, Edinburgh, Bristol and Glasgow over the past 24 months shows a market that dipped through mid-2025 before rents began climbing again into early 2026. Birmingham, for example, moved from broadly flat or negative year-on-year rent growth in mid-2025 to +8.3% growth by January 2026, alongside average days-on-market stretching from the high-30s to around 50 days late in 2025 — a signal that landlords who remain in the market are able to hold out for higher rents even as void periods lengthen.

Bristol tells a similar story: after a run of negative year-on-year comparisons through late summer and autumn 2025, asking rent growth turned positive again by October 2025, even as days-on-market pushed toward 50. This pattern — firmer pricing power paired with slower absorption — is consistent with a market where the pool of available rental stock is thinning relative to tenant demand, even if individual transactions are taking longer to close.

This is the crux of the post-Section 21 story. Landlords facing higher compliance costs, longer and more procedurally complex routes to regaining possession, and tighter EPC minimum standards are not necessarily listing more slowly-turning stock — some are exiting the sector altogether, selling into the owner-occupier market or consolidating portfolios. REalyse's listings volume data shows meaningful month-to-month swings in active rental stock across all six cities tracked, consistent with churn from both new-instruction agents and landlords testing an exit via sale rather than re-let.

Reading the yield picture

Gross rental yield data from REalyse's active listings shows Glasgow and London's outer boroughs delivering some of the strongest headline yields among the cities tracked — Glasgow flats averaging in the high-7% range and select London flat-share and room-based stock reaching into the 5-8% band — while core London houses and semi-detached stock sit closer to 5%. Birmingham and Edinburgh cluster in a 6-7% range across most mainstream property types.

For institutional investors and lenders underwriting new acquisitions, this matters because compliance costs (EPC upgrades, licensing fees, more rigorous documentation for possession claims) compress net yield more than they compress gross yield — meaning headline figures increasingly overstate achievable returns relative to two or three years ago. REalyse comparables at the postcode level remain the most reliable way to stress-test whether an advertised yield still clears an acceptable return once compliance capex and voids are priced in.

Portfolio strategy: a tilt toward flats, HMOs and BTR

The compliance shift is also visible in how landlord stock is composed. REalyse's active listings data shows flats forming the overwhelming majority of rental stock in every major city tracked, with Birmingham alone carrying several thousand active flat listings versus a few hundred detached or bungalow instructions. HMO concentration is highly localised — some flat-share segments in Edinburgh and Glasgow show HMO shares above 65%, while HMO representation elsewhere is negligible — reflecting how licensing regimes and local authority Article 4 directions have pushed HMO activity into specific submarkets rather than spreading it evenly.

Build-to-Rent (BTR) share remains a small but persistent slice of active listings in every city, running roughly 2-13% of flat stock depending on location, with London and Birmingham showing some of the higher concentrations. For developers and institutional capital, this is the structural opportunity implied by the compliance squeeze: BTR platforms are built for regulatory compliance from the ground up — EPC-ready, professionally managed, licensed where required — and are better positioned to absorb tenant demand displaced by smaller landlords exiting single-let stock. Development managers assessing new BTR sites should be cross-referencing REalyse's planning pipeline data with local rent and yield comparables to identify where displaced demand from landlord exits is least likely to be met by existing supply.

Outlook: a bifurcating market

The data points to a rental market bifurcating along two axes: cities and submarkets where supply is tightening fastest (evidenced by rising days-on-market alongside reaccelerating rents), and portfolio types — HMO, BTR, professionally managed multi-let — that are structurally better placed to absorb compliance costs than small, single-property landlords.

For lenders, this means underwriting models should weight local compliance exposure (EPC bands, licensing status, HMO article 4 areas) alongside traditional yield and void assumptions. For investors and developers, the opportunity lies in identifying high-demand postcodes where landlord attrition is creating a supply gap that professionally managed stock — BTR or purpose-built HMO — can fill. REalyse's comparables, yield and planning pipeline data together offer the clearest read on where that gap is opening fastest, and where it is likely to close first.