What would be a deal breaker?

[rentnotsub]

If you were buying an old terraced house that looked ok to move in to, but you hadn't got much spare cash?

High damp readings on the front wall of house but it's been dry lined (possibly covering something up?)

Roof repairs required (some tiles have lifted, "coming to the end of its useful life")

Bulging of some brickwork to the kitchen extension (cavity wall) suggesting some cable tie degeneration.

Walk away please. The tie issue is a biggie.

Get a surveyor to estimate the costs of the work. If you can’t afford to spend the money on a surveyors cost assessment you cannot afford the house and should walk away.

I'd go ahead with the first two issues, but not the bulging - unless I was getting it really cheaply as a fixer-upper!

Yeah that's what I thought. The cavity wall tie thing is only on the small kitchen extension if that makes any difference.
It's not a case of not being able to afford the survey, it's more not wanting to throw good money after bad.

These things always turn out worse than you think in old houses. Will you not redecorate when you move in? What's the wiring like?
How long will it take to save up to do the works? Don't underestimate the stress and poor health houses like that can cause if you live in it without sorting.

When was the extension built? From the mid-eighties the ties should have been stainless steel and good for a very long time. Replacing them and capping the old ones so they don’t cause more damage is a fiddly job but on a small expanse of wall it might not be horribly expensive.

A new roof might be though.

If you love the house it would be worth investigating further and getting repairs costed up. You could renegotiate on price based on quotes for repairs. If you do t have much spare cash though, it might be better not to pursue it further - roof damage and cable tie failure are not things that can really wait long. If you do t put them right soon, the damage will be even more extensive and expensive to correct.