The North West posted 4.7% annual house price growth, strongest in England. London fell 2.5%. That seven-point regional gap is not noise. When rents are also rising faster in Liverpool and Manchester than in inner London, the investment case for Northern BTL is about as clearly stated as official data can put it.
What Has Happened?
The ONS published its September 2026 Private Rent and House Prices bulletin on Thursday, covering rental data through August 2026 and house price data through June 2026. The UK-level figure for private rent growth is 4.6% annually. That compares to a recent low of 1.6% in February 2026 and a peak above 9% in 2024. The direction of travel is clear: the rental market is tightening again after a period of relative calm.
England's average monthly rent reached £1,459 in August 2026, up 4.0% from £1,403 a year earlier. The Scotland and Wales figures also showed acceleration, but England is the primary market for the bulk of UK BTL investors, and the £1,459 figure reflects a market that has absorbed two years of Renters' Rights Act transition without rents falling.
The house price data in the same bulletin is where the regional picture sharpens. The North West recorded 4.7% annual house price growth in the year to June 2026, the strongest of any English region. London recorded an annual fall of 2.5%. The UK national average house price stood at £273,000 in July 2026, up just 1.4% over the year, masking a much wider range of regional outcomes underneath that national average.
The supply picture sitting behind the rent figures is equally important. Homes available to rent across the UK are running 3% below year-ago levels, reversing a three-year improvement that had been gradually easing rental pressure. In inner London, that supply gap is 13%. There are now 5.3 enquiries per rental listing nationally, the highest for almost two years. The flow of new properties coming onto the rental market is also 6% lower than this time in 2025.
Separate Rushbrook research published in September 2026 provides a landlord-portfolio perspective on what rent growth is doing at the income level. The average UK landlord holds 7.3 properties with a combined estimated value of £1.7 million and is now generating £88,454 in gross annual rental income, up from £71,978 a year ago. Per-property gross income has risen 22.9%, from £9,860 to £12,117. Portfolio-level costs have risen in parallel, and arrears remain a significant factor in some portfolios, which I will come back to in the risk section.
Why This Matters to UK Property Investors
The rent-to-price ratio is the number that determines whether a BTL acquisition makes sense. And that ratio is moving in opposite directions in London versus the North right now.
Take London. House prices are down 2.5%. Rents in inner London are up 3% to 4%. Mathematically, gross yields on London property are improving because prices have softened while income is holding. But the starting yield remains too low for a mortgaged acquisition in most London postcodes. A property at £520,000 in East London letting at £2,300 per month delivers a 5.3% gross yield. At the current market average five-year BTL fix of 5.64%, that is already a deficit position before management fees, service charges, or void periods. Yield improvement from price falls matters only once you reach a level where the income clears the finance cost. In most London postcodes, that level is not yet in reach.
Northern cities offer a different calculation. Liverpool L6 has properties in the £200,000 to £260,000 range generating rents of £950 to £1,200 per month, producing gross yields of 5.7% to 6.6%. Manchester M14 runs similarly. The North West's 4.7% house price growth has not yet eliminated the yield advantage over London; property prices in these cities are rising from a lower base, and rental growth (running at 5.4% to 6.8% in Liverpool and Manchester specifically) is keeping pace. On a 75% LTV BTL mortgage at 5.64%, these markets leave a positive margin. The margin is not wide, and it depends on the specific postcode and purchase price. But it exists in the North in a way that it does not in most of London.
The Rushbrook income data adds another layer. A gross income figure of £88,454 across 7.3 properties sounds like a strong outcome after several years of landlords being told the sector is unviable. Per-property income up 22.9% in a year is real money. For portfolio landlords reviewing their position before the October 2026 Budget or remortgaging onto new fixed rates, the income trajectory matters for serviceability calculations and for decisions about whether to expand or hold.
The Risks Investors Need to Understand
The five-year fix at 5.64% is the constraint against which every Northern yield figure needs to be tested. Five-year swap rates hit 4.52% in early September 2026, the highest in three years, and BTL product pricing has followed. An investor who locked in a 3.5% BTL fix two years ago and is now refinancing faces a jump of 2.14 percentage points. On a £200,000 mortgage, that is an additional £4,280 in annual interest. For a small portfolio, that kind of refinancing event can turn a modestly profitable set of properties into a break-even or loss-making position in year one of the new rate.
The gross-versus-net distinction in the Rushbrook data deserves careful reading. The £88,454 gross income figure is before mortgage costs, management fees, maintenance and compliance. The Rushbrook research estimated annual portfolio management costs at £12,207 across the average 7.3 properties. Average outstanding borrowing was £736,000. At a blended rate of 5.5% on that borrowing, mortgage interest alone runs to about £40,500 per year. Those two costs bring net income down to roughly £35,747 before any maintenance spend, void periods, or compliance costs. The research also flags arrears as significant across some portfolios. A single difficult tenancy can take net income considerably lower than the gross headline suggests.
The supply contraction is supporting rents right now, but part of it has an uncomfortable origin. Some of the 3% national fall in rental supply reflects landlords who are declining to re-let between tenancies rather than operate under the post-Renters' Rights Act possession framework. If Section 8 court delays (currently averaging 33 weeks) worsen further, more landlords will withdraw stock. That structural supply reduction supports rents in the short term. It also creates a policy risk: if rent growth accelerates toward 5% by year end as Zoopla forecasts, the political pressure for some form of rent control mechanism increases. Scotland and Wales have both attempted rent controls in the recent past. The possibility that England follows is not fanciful, even if it is not the current government's stated intention.
For investors specifically eyeing the London data, the 2.5% annual price fall has not yet created a genuine buying opportunity in most postcodes. Inner London gross yields at 5% to 5.5% remain below the finance cost for most leveraged investors. Cash buyers in London face a different calculation, but cash-buy yields are thin enough that other assets offer comparable or better income returns. The improving yield story in London is real but insufficient.
Where the Opportunity Could Be
The ONS data, read alongside the Zoopla September forecast and the Rushbrook portfolio income research, points toward Northern and Midlands residential BTL in the £150,000 to £280,000 price bracket as the area of strongest fundamentals in September 2026.
Liverpool is the city I keep returning to when looking at this data. L6 and L7 postcodes, within a 20-minute walk of the University of Liverpool campus, have shown consistent rental growth and remain accessible on purchase price relative to other major English cities. A three-bedroom terrace at £220,000 achieving £1,050 per month delivers a 5.7% gross yield, which clears the finance cost on a 75% LTV mortgage with a modest margin. The same property converted to a professionally managed five-room HMO, letting at £480 to £520 per room, generates £2,400 to £2,600 per month: a gross yield of 13% or above against the same acquisition price. The HMO premium in Liverpool remains one of the widest in any major English city. The licensing complexity and management requirements are real, but for investors who have those elements in place, the numbers are difficult to argue with.
Manchester M14 (Fallowfield, Withington) and M19 (Levenshulme, Gorton) are markets I watch closely because the North West's headline 4.7% house price growth has not fed through evenly. Levenshulme in particular still has sub-£200,000 two-bedroom terraces achieving rents of £900 to £1,000 per month. That is a 5.4% to 6.0% gross yield from a city with a diverse employment base, a growing professional rental market, and direct tram connections to the city centre. It is not as high-yielding as Liverpool L6 at its best, but the tenant profile is less concentrated in a single sector, which reduces void risk.
Newcastle is the market the September 2026 data keeps placing in front of me. NE4, NE5 and NE6 postcodes run at 6.5% to 7.5% gross yield for standard two-to-three bedroom residential BTL. The North East as a region recorded solid house price growth while maintaining yield levels that work on a mortgaged basis. Sunderland SR4 and SR5 are yielding above 9% in parts, which is exceptional for standard residential, though the lower absolute price points and tenant market depth differ from Newcastle itself. For investors who want Northern yield without the concentration risk of a single-sector tenant market, Newcastle NE4 to NE6 is the most balanced set of options in the current data.
Arsh's Investor View
I have been tracking the ONS rent and house price bulletin month by month since this format launched. The September 2026 edition makes the north-south case as clearly as I have seen it in a single government dataset. North West at plus 4.7%, London at minus 2.5%, and rents accelerating across the same period. Seven percentage points of regional house price divergence in a single monthly release is not noise. It is a structural shift playing out in real time.
I want to be honest about the Rushbrook income data, because I think the headline gets misread. £88,454 gross across a 7.3-property portfolio is a positive signal on income trajectory. But that number includes the mortgage interest, the management fees, the compliance costs, the voids. Once you strip those out, you are looking at net figures that are serviceable but not spectacular. The investors who do well in this environment are the ones running tight operations: company structures for tax efficiency, specialist HMO mortgage products where appropriate, management agents who actually manage rather than just collect rent, and EPC work done ahead of the 2030 deadline rather than as a panic spend in 2029. The gross income improvement is real. The net improvement depends on how well the portfolio is run.
On the regional opportunity: I would be buying in Northern cities right now, with two conditions. The first is that the specific purchase price needs to work at current finance costs. Not all properties in Liverpool L6 or Manchester M19 are equally well priced. I run the calculation at the actual mortgage rate, not an optimistic rate, before any offer. The second condition is that I want a clear tenant market for the specific product. A four-bedroom HMO in Liverpool L7 has a clear student and young professional market. A four-bedroom HMO in a peripheral Northern postcode where I cannot identify the tenant profile before acquisition is a different risk entirely.
How Property Investor App Can Help
Property Investor App lists sourced residential BTL opportunities in the Northern and Midlands markets that the ONS September 2026 data highlights. PIA's pipeline includes two and three-bedroom terraces in Liverpool L6, Manchester M14 and M19, and Newcastle NE4 and NE6, priced from £140,000 to £280,000, alongside HMO stock in student and professional sharers' corridors in Liverpool and Leeds. PIA connects investors with specialist BTL mortgage advisers working across lenders including Paragon, Foundation Home Loans and The Mortgage Works, and with sourcing specialists who know these markets at postcode level. Browse current UK property investment opportunities on Property Investor App.
Key Takeaways
- ONS September 2026 bulletin: UK private rents rose 4.6% annually to August 2026, up from a 1.6% low in February. England's average monthly rent reached £1,459, a 4.0% year-on-year increase. Rental supply is 3% below year-ago levels nationally, with 5.3 enquiries per listing, the highest for almost two years.
- The North West was the strongest English region for house price growth at 4.7% annually in the year to June 2026. London recorded a 2.5% annual fall. The UK average house price stood at £273,000 in July 2026, up 1.4%. The seven-point gap between the North West and London is the largest regional spread in recent ONS data.
- Gross yields in Liverpool, Manchester and Newcastle run from 5.7% to 7.5% on standard residential BTL and above 10% on professionally managed HMOs. At a market average five-year BTL fix of 5.64%, those Northern yields leave a positive margin over finance cost. London gross yields of 5% to 5.5% do not clear the finance cost on most mortgaged acquisitions in September 2026.
- Rushbrook September 2026 research shows the average UK landlord portfolio (7.3 properties, £1.7 million estimated value) generating £88,454 gross annual income, up 22.9% per property year-on-year. Portfolio management costs run to £12,207 annually. Average outstanding borrowing is £736,000. Net income after mortgage interest and management costs is substantially below the gross headline, and arrears remain a significant factor across some portfolios.
- Inner London rental supply is 13% below year-ago levels, supporting rents there. The national 3% supply reduction partly reflects landlords declining to re-let between tenancies under the post-Renters' Rights Act possession framework. If rental growth reaches Zoopla's 4% to 5% year-end forecast, political pressure for some form of rent control mechanism increases.
Frequently Asked Questions
What did the ONS September 2026 Private Rent and House Prices bulletin find?
The ONS September 2026 bulletin, published covering data through August 2026 for rents and June 2026 for house prices, found UK private rents up 4.6% annually. England's average monthly rent was £1,459, up 4.0% year-on-year. UK average house prices were £273,000, up 1.4%. The North West was the strongest English region for house price growth at 4.7% annually. London was the weakest at minus 2.5%.
Why is the North West showing the strongest house price growth while London falls?
Several factors have been building since around 2018. Manchester and Liverpool have attracted sustained employment growth in life sciences, technology, and professional services, bringing younger workers who rent and buy in those cities at accessible price points. London faces the opposite dynamics: high absolute prices put the market out of reach for many buyers at current mortgage rates, ongoing cladding remediation costs depress flat values, and a long period of affordability pressure has pushed buyer demand to the ceiling. Northern cities offer entry prices that work for buyers using mortgages. That sustains demand and supports house prices. London's high base means even modest sentiment shifts produce falls.
How does 4.6% UK rent growth affect buy-to-let investor calculations?
Rent growth of 4.6% improves income returns on existing portfolios. A landlord generating £1,000 per month gains around £46 per month in additional rental income over twelve months at that growth rate, improving cashflow and serviceability on remortgaging. For new acquisitions, the growth rate improves yield projections over the holding period, but does not rescue markets where the starting gross yield is already below the finance cost. London at 5% to 5.5% gross yield plus 4.6% rent growth trajectory still does not clear a 5.64% five-year BTL fix on most properties. Northern markets at 6% to 7.5% gross yield with similar rent growth trajectory produce a workable and improving position.
Is the Rushbrook £88,454 gross income figure a good indicator of BTL profitability?
Gross income and net profit are different numbers. The Rushbrook September 2026 research shows average gross income across a 7.3-property portfolio at £88,454. Annual portfolio management costs add up to £12,207. Average outstanding borrowing is £736,000; at a blended rate of 5.5%, mortgage interest alone runs to around £40,500 per year. After those two costs, net income is approximately £35,747 before maintenance spend, void periods, and compliance obligations. The 22.9% per-property income improvement over the past year is a real and positive signal for the sector. It is not a signal that net returns are equivalent to gross ones.
Which UK cities offer the best buy-to-let yields in September 2026?
Based on current ONS data and September 2026 market pricing, the strongest gross yields for standard residential BTL are found in the North East (Sunderland SR4 and SR5 at above 9%, Newcastle NE4 to NE6 at 6.5% to 7.5%) and in Liverpool (L6 and L7 at 5.7% to 6.6% for standard residential, significantly higher for professionally managed HMOs). Manchester M14 and M19 run at 5.4% to 6.0% for standard residential. All of these markets clear the current market average five-year BTL fix of 5.64% on a 75% LTV basis, with varying margins. London's 5% to 5.5% gross yield on most residential BTL stock does not clear that finance cost.
