Weak price growth, rising ownership costs and valuation pressures are reshaping remortgage and lending conversations across the flat market
Flats are becoming an increasing concern within the mortgage market as weak price growth, valuation pressures and rising ownership costs reshape lending and remortgage conversations.
Analysis of the ONS UK House Price Index for February 2026 shows the gap between flats and houses continuing to widen. In England, flat prices fell 3.8 per cent year-on-year to £215,753, while detached and semi-detached homes continued recording positive annual growth.
The longer-term divergence is more pronounced still. Over the decade to February 2026, average English flat prices rose 16.0 per cent, compared with 40.9 per cent growth for detached homes and 45.1 per cent for terraced properties.
ONS data tracking annual price growth by property type since mid-2024 shows flats and maisonettes falling steadily behind houses, with the gap widening sharply from spring 2025 onwards.
Source: ONS UK House Price Index. UK averages. Flats: £189,690 (-2.6% yr/yr). Detached: £438,522 (+1.6% yr/yr) as of February 2026.
The concern is not simply weaker price growth, but what prolonged underperformance means for equity accumulation, remortgage eligibility and future mobility for borrowers concentrated in urban flat markets.
Katrina Horstead of Versed said the trend was becoming more visible in day-to-day broking activity.
“It’s definitely something we’re seeing more of in the market, particularly in larger cities where flat prices have been slower to recover compared to houses,” she said.
“We are seeing more cases where flat owners are facing challenges at remortgage due to down valuations or limited price growth since purchase. In some instances, clients who expected to have moved into lower LTV brackets are finding they have built far less equity than anticipated, which can affect both product availability and pricing.”
The issue is increasingly extending beyond refinancing alone. Brokers say weaker equity growth is beginning to affect flat owners attempting to move up the housing ladder, particularly where affordability pressures remain elevated.
“It is also having a knock on effect for clients looking to move up the ladder,” Horstead said. “A number of flat owners are struggling to generate enough equity for a meaningful deposit on their next purchase, especially when house prices in their target areas have continued to rise more strongly.”
Recent industry data has reinforced the structural nature of the shift. Nationwide has previously pointed to rising service charges, maintenance costs and changing post-pandemic housing preferences as persistent pressures on parts of the flat market, particularly in urban areas where leasehold stock dominates.
Brokers say lenders and valuers are becoming increasingly selective around certain categories of flats. Sam Fox of UK Mortgage Centre said city-centre apartments, developments with higher service charges and some leasehold properties were attracting closer attention from lenders and valuers.
He noted that flat owners who bought during the post-pandemic market surge were increasingly finding that values had stagnated while surrounding house prices continued rising.
“We are also seeing more scrutiny from lenders and valuers on certain types of flats, particularly smaller city-centre apartments, higher service charge developments, and some leasehold properties where affordability is being impacted by rising management costs. In some cases, that is leading to down-valuations or reduced borrowing potential on remortgages.”
Operational and legal complications continue to weigh on parts of the sector as well. Jennifer Highton of The Mortgage Lady said flats were creating “loads of problems”, citing issues ranging from RPI-linked leases and EWS1 requirements to owner-occupier ratios and solicitor reluctance around some high-rise properties.
The shift is changing the nature of advice conversations, with greater emphasis now placed on long-term suitability, resale prospects and ongoing property costs rather than simply initial affordability.
“We are spending more time helping clients understand how property type, leasehold considerations and future saleability may impact their options later on, rather than focusing purely on the initial purchase,” Horstead said.
Fox said buyer priorities had shifted away from simply securing a lower entry price towards longer-term growth, running costs and resale considerations.
Despite the pressures, brokers do not describe the flat market as universally weak. Instead, many see an increasingly fragmented market where building quality, service charges, lease terms and location are playing a larger role in lending outcomes and resale performance.
Fox said lower-deposit lending initiatives such as Halifax’s recent £5,000 deposit mortgage could help support demand among younger buyers struggling to save while paying high rents, potentially stabilising activity at the lower end of the flat market over time.
“Overall, I think the market is becoming much more selective rather than universally weaker,” he said. “Well-located, sensibly priced flats continue to perform, but brokers and borrowers are having to pay far closer attention to property type, lease terms, service charges and future resale prospects than they perhaps did a few years ago.”
