Party Wall Not Rendered Following Fire - Implications?

[Zutnip]

I have been looking at a property to purchase, that has been on the market for some time. I very much like the property and think it had good potential…however the agent has informed me that an issue raised by a surveyor previously was not the valuation but the fact that the party wall was not rendered following a fire to the adjacent property that was subsequently demolished back in 2012. A new property has gained planned permission and groundwork’s are currently underway.

Could someone please shed some light on what they think the potential pitfalls of this are? Is it simply a bank would not lend due to this?

Thank you in advance.