What Makes a Property Unmortgageable in Flintshire?

In this two-minute read, we look at reasons why a property may be classified as unmortgageable. Alternatively click on the video link.

Selling a property can be tricky at the best of times, but when a property is deemed unmortgageable things can get complicated.
 
‘Unmortgageable’ means lenders won’t allow a potential buyer to borrow the money they need to buy a property. For many sellers, this can be a knockout blow and can significantly reduce their options.  
 
Here are five common reasons why lenders won’t finance a purchase.
 
1)     The property is uninhabitable
This applies to derelict properties, buildings that have been abandoned, that pose safety risks or are considered not weatherproof. In addition, properties without a kitchen or bathroom may also be classed as unmortgageable. 
 
As a buyer, you may have big plans to restore a dilapidated property, but a lender may take a different view. If this is the case, always seek financial advice to learn how else you could finance the purchase.
 
2)     Structural problems
If a property resembles the Leaning Tower of Pisa, chances are it’s got a bad case of subsidence – another big no-no for lenders. Other structural issues affecting whether or not a property is mortgageable include severe damp, dry or wet rot.
 
3)     Short lease
If you spot a flat on the market for well below market value, it may have a short lease (under 70 years). A short lease knocks thousands off the value of a property as a buyer may struggle to get a mortgage (if they can get one at all). They’d also have to pay for a lease extension. This is costly (and can take ages) and there are often restrictions around how long you can own a property before applying for a longer lease.
 
4)     Proximity to commercial or industrial sites
Lots of people live above shops so obviously these properties aren’t unmortgageable, but they aren’t always given regular residential mortgages. Particularly if they are above shops such as dry cleaners or restaurants (where there’s a high risk of fire/smoke damage). Similarly, if you buy near a factory or industrial site, a lender may be more reluctant to provide a mortgage as it may be difficult to sell on.
 
5)     Doesn’t comply with building regulations
Sometimes extensions or building work is carried out without the necessary approval, or doesn’t meet strict building regulations. This can hamper a sale as a lender will need to see the necessary permissions/certificates to provide a mortgage.
 
Speak to us at Keystone to find out how we can help you sell an unmortgageable property.
 
 


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November has been an outstanding month for Keystone — and the data is crystal clear. From 1st to 24th November, we’ve agreed 23 property sales, making this one of the strongest months we’ve ever recorded. It’s further proof that when a home is priced with precision and launched with purpose, the market responds quickly and decisively.

If you’re aiming to make your move in the first half of 2026, now is the perfect moment to start preparing. As the evenings draw in and the pace naturally slows, the homeowners who get ahead now are the ones who enjoy the smoothest, quickest, and most profitable moves come spring 🌿✨

When you’re selling your home, the last thing you want is guesswork. You want clarity, confidence and a strategy that attracts the right buyer — not just any buyer. And that’s exactly why we designed our brand-new website to work a lot like Netflix… but for property sellers. 🎬✨

The November Budget introduces financial changes that may influence affordability and confidence across the UK. But here in Flintshire—where £2 million homes are virtually non-existent—the impact is far more modest. For most local sellers, the focus remains on household budgets, buyer caution and getting pricing right for 2026.