Thirteen's Not Enough! Housing Giant Eyes Another Landlord as Questions Grow Over Its Expanding Empire
Teesside Landlord Becoming Too Big to Challenge: Thirteen's Proposed Merger With Another Housing Corporation Raising Questions Over Social Housing Market Dominance.
17th October 2026
One of the North East’s largest so called 'social housing landlords' could be about to get even bigger, after its emerged the Middlesbrough-based Thirteen Housing Group is considering joining forces with another housing association — raising questions about the increasing concentration of social housing being brought under the control of just one single major provider..
Thirteen Group, which already owns or manages approximately 36,000 homes, is said to be exploring a potential merger with Railway Housing Association, a smaller landlord responsible for around 1,620 properties across 20 local council areas across the region.
If the proposals go ahead, the combined organisation could control approximately 37,620 homes, further extending Thirteen's already considerable presence across Teesside, County Durham and beyond raising fears the Landlord is becoming too big to challenge with the development raising questions from some critics of the proposals as to just how big one housing landlord should be allowed to become?
From Thirteen to Fourteen?
The prospect of Thirteen absorbing another landlord into its already 'bloated' & controversial corporate structure is likley to leave some tenants wondering whether the organisation is attempting a 'Hostile takeover' to monopolise the areas social housing sector, with the issue surrounding the continued expansion of major housing associations like Thirteen who continue to dodge their Corporation Tax liabilities as well as the diminishing number of independently operated social landlords.
Railway Housing Association has a history stretching back more than a century. Originally established following the First World War, with support from the Homes for Heroes campaign, the organisation provided accommodation for returning railway workers and their families.
Today, its properties are spread across the North East, Yorkshire and other parts of England, including Darlington, Hartlepool, Stockton, Middlesbrough and County Durham.
Unlike Thirteen, Railway operates on a comparatively small scale and has maintained its own identity and relationships with local communities.
However, under the proposals currently being explored, Railway could become part of the much larger Thirteen organisation with both landlords confirming that discussions are taking place, although no final decision has been made.
Is Thirteen Housing Group becoming too powerful?
For social housing applicants and existing tenants across Teesside, the proposed merger raises wider questions about how much influence a single housing provider should hold over the region's affordable housing stock, esopecially when their cortporate structure means the orgainsation, whilst generating significant financial surplusses contributes nothing to the UK taxation system.
Thirteen already has a substantial presence in communities including Hartlepool, Middlesbrough, Stockton and Redcar.
Its expansion into another housing association would place an additional 1,620 properties within the same corporate group, potentially reducing the number of independently governed landlords operating in areas where affordable housing is already in short supply.
While mergers between housing associations are not unusual, they can create legitimate concerns about accountability, competition and the ability of tenants to challenge decisions made by increasingly large organisations.
Housing giant already generating millions, with no Corporation Tax being paid...
The proposed expansion comes just weeks after the Teesside & Durham Post published reports revealing the enormous scale of Thirteens existing operations.
For the 2025/26 financial year, Thirteen reported:
Turnover of £234.9 million.
An overall annual surplus of £38.8 million.
The completion of 668 new homes.
Investment of £126.4 million in its existing properties.
Approximately 36,000 homes within its portfolio.
On the back of this, Thirteen paid ZERO Corporation Tax to the UK treasury, depriving the government coffers of money that could have been channeled into schools, hotpitals and defence.
More than 1,000 Thirteen homes standing empty
The merger discussions also come against a backdrop of questions about Thirteen's management of its existing housing stock.
As previously highlighted by The Teesside & Durham Post, the landlord's own performance figures showed that 1,017 properties were empty at the end of the 2025/26 financial year.
That figure subsequently increased to 1,082 empty homes at the end of June 2026, against a target of 800.
It means the organisation was holding 282 more vacant properties than its own target permitted at that point against the backdrop of it being nearly a year since the controversial Hartlepool Homesearch Scandal emerged, revealing the scale of housing corruptuion being found by a housing choice based lettings scheme operated by Hartlepool Borough Council.
Critics of large-scale housing consolidation such as the proposals being mooted by Thirteens bosses argue that the priority should be making existing homes available to those who need them, rather than simply increasing the number of properties controlled by a single organisation.
Railway Housing chief executive Matt Sugden said the association remained proud of its heritage and longstanding relationships with local communities.
He explained that joining an organisation with similar values could help Railway continue investing in its homes and services while protecting what makes the association distinctive.
Thirteen chief executive Matt Forrest also welcomed the possibility of closer cooperation, highlighting Railway's approach to resident engagement.
The organisations believe a merger could strengthen their ability to invest in properties and deliver improvements for residents.
Neither organisation has yet published a detailed assessment demonstrating the precise financial savings, additional investment or measurable improvements tenants could expect, however the plans are likley not to be of any significant benefit to Thirteens tenants, who are nervously awaiting a report set to be published int he coming months as to what increase is likley to be seen on their already hefty rents.
What happens to tenants if the merger goes ahead?
According to information released by both organisations, Railway would continue operating under its existing name for the first 12 months following any approved merger.
During that period, tenants would continue using their normal arrangements for reporting repairs, paying rent and accessing support.
The organisations say they would then work with residents to determine how services could be brought together.
However, questions remain over the longer-term implications, including whether Railway would eventually lose its separate identity, whether staffing arrangements would change and how existing tenants would retain a meaningful voice within the heavily bloated Thirteen corporate trough.
Railway has confirmed that residents will be given an opportunity to provide feedback before any final decision is reached.
Bigger doesn't necessarily mean better
There are potential advantages to housing association mergers.
Larger organisations can sometimes secure better borrowing terms, reduce duplicated administrative costs, invest more heavily in repairs and finance new developments that smaller providers would struggle to deliver independently.
However, size alone provides no guarantee of better services being delivered.
For tenants, the real measures of success are likley to be whether repairs are completed promptly, complaints are handled fairly, homes are properly maintained and vulnerable residents receive appropriate support.
For now, Thirteen remains Thirteen, and Railway Housing remains an independent association while the proposals are considered.
But should the merger receive the necessary approvals, the Teesside housing giant could soon become larger still & questions over whether its market dominance in the region & whether the firm has simply become 'too big' will likley wrangle on for some time to come.
