Cracks, Extensions and Red Flags: A Structural Engineer’s View for Ipswich Homebuyers
- Mark Weston (Director- Chartered Structural Engineer)

- Jan 27
- 3 min read

Buying a house in Ipswich often means buying history. Victorian terraces, 1930s semis, post-war housing and well-meaning extensions are all part of the local property landscape. But behind the charm, there can be structural issues that only become obvious once you know where to look.
As structural engineers carrying out inspections across Ipswich and East Anglia, we’re usually called in at the same moment: when a buyer is excited about a property, but something doesn’t quite add up.
Cracks: Cosmetic or Structural?
Cracks are one of the most common concerns for homebuyers, and also one of the most misunderstood.
Some cracking is purely cosmetic. Other cracking tells a very different story about movement, altered load paths, or foundation behaviour. In Ipswich, local ground conditions and older construction methods can make this distinction especially important.
A structural inspection doesn’t just note that cracks exist. It explains:
Why they’ve formed
Whether they’re historic or ongoing
If they affect the structural stability of the building
Whether repairs are necessary or simply advisable
That clarity can stop buyers walking away unnecessarily - or committing to a property with hidden problems.
Extensions: Not All Alterations Are Equal
Ipswich has seen decades of extensions, loft conversions and internal knock-throughs. Some are well designed and properly supported. Others rely on guesswork, outdated building standards, or missing structural elements.
Common red flags we see include:
Removed loadbearing walls without adequate support
Steel beams that are undersized or poorly installed
Extensions with foundations that don’t match the original house
Cracking where old and new structures meet
A structural engineer’s inspection looks beyond finishes and layouts to assess whether those alterations actually work as a structure - now and in the long term.
“Further Investigation Required” - What It Really Means
Many buyers come to us after receiving a homebuyer or building survey that includes the phrase “recommend further investigation by a structural engineer”. This wording can feel vague and unsettling.
What it usually means is that something structural has been identified, but the surveyor is not qualified to assess it fully.
A dedicated structural survey in Ipswich provides that missing piece. It turns uncertainty into informed decision-making, helping buyers understand:
The real level of risk
The likely scope of any remedial work
Whether the issue affects 'mortgageability' or future resale
Why a Structural Engineer Makes the Difference
A structural inspection carried out by a chartered structural engineer focuses on one thing: the safety and performance of the building’s structure.
At JMS Engineers, inspections are independent, unbiased, and written in plain English. Reports are designed to support buyers, not confuse them with unnecessary technical detail.
This is especially valuable when you’re making one of the biggest financial decisions of your life.
Local Knowledge Matters
Ipswich isn’t London, and it isn’t a generic housing market. Property age, ground conditions and construction methods vary widely across East Anglia. Local experience allows structural engineers to spot patterns - and problems - that might otherwise be missed.
That local insight often makes the difference between a confident purchase and an expensive surprise.
Book a Structural Inspection Before You Commit
If you’re buying a home in Ipswich and have concerns about cracks, alterations, or a surveyor’s recommendation, a structural inspection can provide clarity before contracts are exchanged.
Book your structural inspection today with JMS Engineers and move forward with confidence, not assumptions.
JMS Engineers are award-winning Consulting Structural & Civil Engineers with over 25 years experience in providing engineering solutions across residential, commercial and industrial projects.












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