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Over 1.5 Million UK Homes Impacting the Mortgage Market

Over 1.5 million UK homes are classified as ‘unmortgageable’ by lenders, impacting buyers and investors navigating the mortgage market.

By David Sampson
1 August 2026
3 min read
UK residential mortgage article image for Over 1 5 Million UK Homes Impacting the Mortgage Market

TL;DR

  • More than 1.5 million UK homes are deemed ‘unmortgageable’ by high street lenders.
  • this affects buyers and investors seeking financing for unique properties.

Written by David Sampson for Mortgage118. Last updated 1 August 2026. Reviewed against our editorial standards. Editorial standards. Mortgage118 is a directory — not FCA-authorised and not a mortgage adviser.

Recent research indicates that over 1.5 million homes in the UK are classified as ‘unmortgageable’ by mainstream lenders. This situation arises due to various factors including construction types, lease lengths, and property conditions, which fall outside traditional lending criteria. Understanding these challenges is important for buyers and investors looking to navigate the mortgage market.

What Makes a Property Unmortgageable?

Properties can be classified as unmortgageable for several reasons. High street lenders often reject homes that are unconventional in construction, such as thatched cottages or high-rise flats. Additionally, properties located near commercial premises or those lacking essential amenities like functioning kitchens or bathrooms also face challenges securing financing. The study highlights that around 6% of the UK’s 28 million residential properties could struggle to obtain mainstream mortgage finance due to these criteria.

Why Are Buyers Interested in Unmortgageable Properties?

Despite the challenges, many buyers are drawn to unmortgageable properties for various reasons. Approximately 44% of respondents who considered such homes believed they offered better value for money compared to traditional properties. Renovation opportunities are also appealing, with 31% motivated by the chance to restore a property, while 28% aim to add value before selling it for profit. This interest reflects a growing trend among buyers willing to undertake projects that others might avoid.

What This Means for the Mortgage Market

For landlords and investors, the mortgage market is shifting. The potential for lower purchase prices is a significant draw, particularly for buy-to-let investors, 35% of whom cite rental income as their primary incentive. However, the challenges of obtaining financing remain evident, with 21% of respondents reporting previous mortgage application rejections and 32% facing a limited pool of lenders willing to consider their applications. This situation necessitates a strategic approach for investors looking to capitalize on the opportunities presented by unmortgageable properties.

How Can Buyers Navigate the Mortgage Market?

Understanding the intricacies of the mortgage market is essential for prospective buyers of unmortgageable properties. Engaging with specialist lenders who are more open to unconventional properties can be beneficial. Additionally, buyers should be prepared for a potentially lengthy and challenging process, as indicated by the 31% who acknowledge the risk-to-reward ratio involved. Being informed about current mortgage rates and exploring options through mortgage rate comparison tools can also aid in making well-rounded decisions.

Frequently asked questions

What types of properties are typically unmortgageable?

Common examples include thatched cottages, high-rise flats, and homes lacking essential amenities like kitchens or bathrooms. Properties near commercial premises may also face challenges.

How can buyers secure financing for unmortgageable properties?

Buyers should consider engaging with specialist lenders who are more willing to finance unconventional properties. Researching current mortgage rates and comparing options can also help in securing the best deal.

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.