"High-density rental markets aren't going to experience this reform gradually; they'll absorb it all at once"
- Sián Hemming-Metcalfe
New analysis from property inventory software firm Inventory Base pinpoints which parts of England's housing market face the greatest exposure to the Renters' Rights Act, based on the share of local homes sitting within the private rented sector.
Sheffield city centre emerges as the most exposed postcode in England. In the S1 district, an estimated 77% of all dwellings are privately rented, with social housing accounting for a further 11%. London's EC3 follows at 73%, while Leeds city centre postcodes LS1 and LS2 come in at 71% and 68% respectively.
Manchester's M1 and M2 both register 68%, alongside B2 in Birmingham and L2 in Liverpool at 65%, EC4 in London at 64%, and NG1 in Nottingham at 64%.
Across England, 39 postcode districts have PRS concentrations of 50% or more. In these markets, the scale of rental stock means compliance changes won't phase in gradually but will hit at volume from day one.
The Renters' Rights Act reforms landlord practices and strengthens tenant protections across the private rented sector, most notably through the abolition of Section 21 'no-fault' evictions. It also creates the framework for stricter safety and quality standards, including the future application of Awaab's Law and the Decent Homes Standard to private rentals.
While these measures bring the PRS closer to the regulatory model seen in social housing, they do not fully align the two in practice or enforcement.
To produce the rankings, Inventory Base analysed housing stock at postcode district level, ordering areas by the proportion of privately rented homes.
"High-density rental markets aren't going to experience this reform gradually; they'll absorb it all at once," said Sián Hemming-Metcalfe, operations director at Inventory Base.
"When over half the housing stock sits in the PRS, every regulatory change scales instantly. More properties to inspect, more compliance points to evidence, and more opportunities for disputes if standards aren't met.
"The removal of Section 21 shifts the balance of risk, but the real pressure sits in execution. Meeting tighter safety expectations, maintaining consistent property standards, and evidencing that work properly (at volume) is where most operators will feel the strain.
"This is where operational cracks tend to show. Manual processes, inconsistent reporting, and poor audit trails don't hold up under this level of scrutiny.
"The agents who will cope are the ones who treat this as a systems problem early; tightening workflows, standardising reporting, and making compliance visible and repeatable. In high-density rental markets, preparation isn't just a competitive advantage; it's what will determine whether you stay compliant at all."
In practice, agents operating in high-PRS areas won't have the luxury of gradual adjustment. The volume of properties, inspections, and compliance requirements will scale immediately, exposing gaps in process, reporting, or record-keeping. For many, the challenge won't be understanding the legislation but keeping up with it.
