The number of new landlord companies being registered each year has risen by more than 1,700% since 2000, according to an analysis of Companies House records.
And the pace has not slowed: nearly 14,000 were incorporated during the first five months of this year, landlord insurance provider Just Landlords reveals.
Its research shows that 1,882 businesses were registered in 2000, compared with a record 34,128 during 2025.
The figures show 141,292 landlord companies were incorporated between 2020 and 2025, exceeding the 101,095 registrations recorded across the previous two decades combined.
Between 2000 and 2009, 23,998 businesses were formed, an annual average of about 2,400.
That increased to 77,097 during the following decade, averaging 7,710 a year.
The annual average rose again to 23,549 between 2020 and 2025.
Remarkable rise in incorporation
The firm's managing director, Clark Ross, said: "The scale of this shift is remarkable.
"We're seeing clear evidence of the continued professionalisation of the private rented sector, with a growing number of landlords now operating through formal business structures."
The company said several factors may have encouraged landlords to incorporate.
These include:
- Changes to mortgage interest tax relief
- Higher stamp duty costs on additional properties
- Regulatory requirements
- Longer-term portfolio planning.
Landlord incorporation rockets
The data shows that landlord company registrations increased by nearly 59% during the two years after the 3% stamp duty surcharge on additional properties was introduced in April 2016.
London has accounted for almost a third of all landlord company registrations since 2000.
However, its share of new incorporations has fallen as the number established elsewhere has increased.
Scotland recorded the largest rise between 2020 and 2025, with annual registrations increasing by 171%.
More than 2,100 landlord companies are now being registered there each year, compared with fewer than 400 in 2015.
Northern Ireland recorded growth of 148% over the five-year period, followed by Wales at 144%.
England landlord incorporation
Across England, registrations rose by 95.3%, with the West Midlands experiencing the strongest increase at 108%.
Registrations also rose by 106% in both the North West and Yorkshire and the Humber.
London recorded a 104% increase, while the East Midlands saw growth of 99%.
The East of England recorded an increase of 92%, followed by the North East at 79%, the South East at 75% and the South West at 70%.
Growth is strong outside London
Mr Ross said: "What's particularly interesting is that growth is no longer concentrated in London alone.
"Some of the strongest increases have been seen across Scotland, the Midlands and the North of England, suggesting that professional landlord businesses are becoming an increasingly important part of regional housing markets across the UK."
He added: "There are a number of factors that may be driving this shift.
"London's property values have long made it the dominant market, but the comparatively lower entry costs in regional cities mean landlords can build a more diversified portfolio for the same initial outlay and potentially see stronger yields in the process.
"Rising house prices in the South have also pushed more renters into regional markets, increasing demand and making those areas more attractive to professional investors."
Landlords choose limited companies
The managing director of Accommodation for Students, Simon Thompson, said: "The fact more landlords are choosing limited companies to manage portfolios, is a reflection of the growing complexity of operating in the sector.
"Tax changes, tighter regulation and longer-term planning appear to be influencing how investment activity is structured."
He added: "Opportunities are also spreading beyond the capital as regional markets attract greater attention.
"There's no doubt that for many landlords, though not for everyone, formal business arrangements do benefit them, but there are added administrative, compliance and insurance responsibilities."
