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Over 1.5 Million UK Homes Are Unmortgageable

Over 1.5 million UK homes are classified as unmortgageable, impacting buyers and investors seeking affordable options.

By David Sampson
3 August 2026
3 min read
UK residential mortgage article image for Over 1 5 Million UK Homes Are Unmortgageable

TL;DR

  • More than 1.5 million UK homes are classified as unmortgageable due to factors like construction type and property condition.
  • this affects buyers seeking affordable options and investment opportunities.

Written by David Sampson for Mortgage118. Last updated 3 August 2026. Reviewed against our editorial standards. Editorial standards. Mortgage118 is a directory — not FCA-authorised and not a mortgage adviser.

New research indicates that over 1.5 million homes in the UK are deemed “unmortgageable” by mainstream lenders, significantly impacting potential buyers and investors. This situation arises from various factors that fall outside the typical lending criteria of high street banks.

What Makes a Home Unmortgageable?

According to the findings, approximately 6% of the UK’s 28 million residential properties are considered unfinanceable by mainstream lenders. Key factors include thatched roofs, short leases, solid-wall construction, high-rise locations, proximity to commercial premises, and the absence of essential amenities like kitchens or bathrooms. These characteristics often lead to rejection from standard mortgage applications.

Who Is Affected by This Issue?

Potential buyers who are interested in properties that do not meet standard lending criteria are significantly impacted. Among those who have considered purchasing such homes, 44% believe these properties offer better value compared to conventional homes. Additionally, 31% are looking for renovation projects, while 28% see these homes as opportunities to increase their value before resale.

What This Means for Buyers and Investors

For buyers and investors, the unavailability of standard mortgages can limit options significantly. More than a quarter of those surveyed indicated that lower purchase prices were the primary incentive for pursuing these properties. However, 21% reported having their mortgage applications rejected, and 32% faced a reduced choice of lenders willing to consider their applications. This trend highlights the necessity for alternative financing solutions, especially for buy-to-let investors, 35% of whom cited rental income potential as their main motivation for pursuing these properties.

What Should You Watch Next?

As the property market evolves, it is important for borrowers and investors to stay informed about changing lending criteria and explore alternative financing options. The growing number of unfinanceable properties may lead to an increased demand for specialist lenders who can accommodate unique property types. Keeping an eye on these trends will be essential for making informed investment decisions.

Frequently asked questions

What types of properties are considered unmortgageable?

Properties with thatched roofs, short leases, solid-wall construction, or lacking essential amenities like kitchens and bathrooms are often deemed unmortgageable.

How can buyers finance unmortgageable properties?

Buyers can explore specialist lenders who cater to unique property types or consider renovation loans that allow for financing based on the property’s potential after improvements.

About David Sampson

David Sampson writes about the UK mortgage market for Mortgage118, covering specialist lending, market trends, and practical advice for borrowers. All content is reviewed for accuracy against FCA guidelines and current market data.