Not every purchase needs a structural engineer - but when one does, it really does, and usually at the worst possible moment: mid-transaction, with a lender waiting. Here's how to know which situation you're in and what to do about it.
The clear triggers
- Your valuation or RICS survey says 'further investigation by a structural engineer' - the lender usually won't proceed without it
- You can see cracking, sloping floors, bulging walls or a leaning chimney at viewing
- The property has been altered - walls removed, loft converted - with no Building Regulations paperwork
- The seller's documents mention subsidence, underpinning or structural repair, or the property is being sold cheap for 'structural issues'
What the engineer's report changes
It converts a vague fear into a priced fact. 'Possible movement' might mean stable Victorian settlement needing nothing, or active subsidence needing investigation - the report tells you which, what any work costs in scale, and gives you the evidence to renegotiate or walk away. Buyers usually recover the fee many times over in the first conversation with the seller after the report lands.
Fitting it into a purchase timeline
Speed is the whole game. Send the engineer the address, the surveyor's wording and any photos on day one; access is arranged through the estate agent (routine); and a focused inspection with a fast-turnaround report follows. We prioritise purchase-deadline surveys across Leeds and West Yorkshire for exactly this reason - ask for the timescale when you get your quote, and hold the practice to it.
Frequently asked questions
Should I get the survey before or after my offer is accepted?
Usually after, once you know the property is yours to investigate - but for a property with visible structural questions, an early inspection (with consent) can save a wasted conveyancing spend.