Short answer: usually not, but the exceptions matter. Here’s how to tell the difference, from engineers who look at cracked walls every working day.

Cracks that are usually harmless

• Hairline cracks in plaster, especially in new or recently altered homes
• Vertical cracks at plasterboard joints and above doorframes
• Cracks that appeared once, were filled, and never returned

Cracks worth an engineer’s inspection

• Diagonal cracks stepping through brick or stonework, inside or out
• Cracks wider than about 5mm, or wider at one end than the other
• Cracks that reopen after filling, or grow season on season
• Cracking with sticking doors/windows or sloping floors
• Cracks around bays, lintels, chimney breasts or where an extension meets the house

What an inspection costs you, and saves you

A single engineer’s visit and report settles the question. If the crack is harmless you stop worrying and stop spending; if it isn’t, you’ve caught it early, when repair is cheapest and insurers are most sympathetic.

Why an independent survey matters

We are an independent firm of structural engineers, not tied to any estate agent, lender or builder. Our only job is to tell you the truth about the building. Established in 1981, we have inspected thousands of homes across Leeds and West Yorkshire, and our reports are accepted by mortgage lenders, solicitors and insurers.

What you get

• A clear written report in plain English, with photographs
• A definite answer: is it serious, is it historic, does it need monitoring or repair
• Repair recommendations and, where needed, outline costs
• Fast turnaround, reports typically delivered within days of inspection

We survey across Leeds, Wakefield, Bradford, Harrogate and all of West Yorkshire, see all areas and services.