Levels of inspection
We offer three levels of inspection for homes, and a fourth for mortgage lenders. If you are not sure which fits, describe what you have seen when you get in touch and we will recommend one before you book.
Specific Structural Inspection (SSI)
One crack or one problem area
From£420*One issue, in one area
A visual inspection of one structural issue or crack, in one specific area of the property.
- The issue or crack you have asked about
- Its likely cause, and what to do next
- Findings and recommendations sent by email
Other rooms and areas are not inspected.
Recommended for buyers
General Structural Inspection (GSI)
Buying a house, or several concerns
From£540*Standard mid-terrace house
A visual inspection of the main structure, inside and out, for severe cracks, subsidence and movement.
- Walls, floors, lintels, beams, columns and openings
- Nearby trees and shrubs, assessed under NHBC guidance
- Soil type from British Geological Survey records
- A written report with remedial advice and any further investigation needed
Covers up to five significant structural issues. The loft and roof structure, cellar and outbuildings are not included.
Comprehensive General Structural Inspection (CGSI)
Older or altered homes
From£880*Standard mid-terrace house
Everything in a GSI, and not restricted to a set number of issues.
- Roof structures, the cellar and outbuildings
- Internal alterations, and whether they appear to comply with Building Control
- Earlier structural changes to the property
- No limit on the number of cracks inspected
The whole property is reviewed for signs of severe movement. It is not a record of every crack.
Mortgage Structural Inspection (MSI)
Your lender's valuer wants a report
PriceQuotedSend us the valuer's letter
The specific structural points your lender's valuer has raised.
- Reviewed by MICE or MIStructE qualified engineers
- A report in the form lenders expect, with photographs
- Repair advice if defects are found
Other parts of the property are not inspected unless you or your lender ask.
- Fast trackReport within 48 hours of the inspection, from £120*
- Weekend inspectionSaturday or Sunday visit, from £80*
- Larger homesPriced by size, and confirmed with you before you book
These prices are a guide. Your price depends on the size of the property and what needs looking at. We confirm your price in writing before you book. Our recommendations for remedial work do not include detailed design or calculations, unless we confirm this with you in writing before the site visit.
* Prices are a guide only and VAT may be added. Contact us for an accurate price.
When to book a structural inspection
- Cracks have appeared in walls, ceilings or brickwork, or an old crack has opened again after filling.
- Doors or windows have started to stick, or floors feel uneven or sloping.
- Your mortgage lender has asked for a structural engineer's report.
- Your insurer suspects subsidence or structural movement.
- You are buying an older property, such as a Victorian or Edwardian house.
- You plan to remove a load-bearing wall, convert the loft or build an extension.
- The property has suffered subsidence before.
- There are visible signs of movement or distortion, or a large tree close to the house.
Finding a defect early can stop a minor problem becoming a costly repair.
What a structural engineer inspects
- Foundations
- Usually hidden, so they are assessed through the signs they leave: stepped cracking, differential settlement, distortion, subsidence and heave. Trial pits or soil investigations may be recommended.
- Walls and roof
- Cracks, bulging or bowing walls, deteriorated mortar, brick movement, failed lintels, sagging rafters, roof spread and overloaded purlins.
- Floors
- Deflection, settlement, rot, damp-related deterioration and movement.
- Chimneys
- Leaning stacks, cracking, separation from the building and deteriorating masonry.
- Structural alterations
- Removed walls, steel beams, loft conversions and extensions, to judge whether the support appears adequate.
Trees near the house are assessed against NHBC guidance, and ground conditions are checked against British Geological Survey records, because shrinkable clay under much of London is the most common cause of movement here.
What your report includes
- A description of the property
- A summary of what we observed
- Details of the structural defects
- Their probable causes
- How severe they are
- Photographs
- Our recommendations
- Whether monitoring is needed
- Whether further investigation is needed
- Suggested remedial works
Reports for mortgage lenders and insurers also answer the points those organisations have raised. For a Specific Structural Inspection, findings and recommendations are sent to you by email.
If we find a structural problem
Depending on what we find and how serious it is, we may recommend:
- Crack monitoring
- Trial pits to expose the foundations
- A CCTV drain survey
- A soil investigation
- Structural calculations
- Localised repairs
- Strengthening works
- Further specialist investigation
Our recommendations for remedial work do not include detailed design or calculations, unless we confirm this with you in writing before the site visit.
Structural survey or RICS Level 3? An RICS Level 3 survey looks at the whole home, including plumbing and electrics, and gives only a brief overview of the structure. When it finds something structural, it usually recommends a structural engineer. Our inspection is the specialist look at that structure: if the Level 3 survey is the GP check-up, we are the specialist. A structural inspection is not a RICS Building Survey and does not replace one.
Who carries out the inspection
Our in-house engineers, each of whom holds a master's degree in structural engineering. If you need the inspection carried out by a chartered structural engineer, ask when you book and we will confirm it in writing before the visit. Mortgage Structural Inspections are reviewed by MICE or MIStructE qualified engineers.
If your lender needs the report, tell us before the inspection, so it is prepared in the form they expect.
What an inspection does not include
- Visual only. We do not lift floors, open up walls or dig unless this is agreed beforehand.
- Remedial design. Our recommendations for remedial work do not include detailed design or calculations, unless we confirm this with you in writing before the site visit.
- Structure only. Electrics, plumbing, heating, gas, drainage, asbestos, damp, rot, ventilation, fire safety and pests are not inspected.
- Japanese knotweed is excluded. A RICS surveyor should check for it before you buy.
- Trees are identified by eye. Our engineers are not arboriculturists, so have the species confirmed by a tree specialist before relying on that part of the report.
- Ground conditions come from public records, including British Geological Survey maps. Only a site investigation with laboratory testing can confirm them.
- Time on site. A standard inspection covers what can reasonably be seen and reached in about 45 minutes. Tell us before the visit if the property has been empty for a long time, or not painted or maintained for more than ten years, as it may need longer.
The full terms are in our conditions of engagement.
Examples from our reports
- Front porch pulling away from a 1930s semi in Greenford. Cracks and a 10 mm gap where a rebuilt porch meets a 1930s house in Greenford, UB6. What we found, the likely cause and the repair we recommended.
- Conservatory separating from a house in Uxbridge. A rear conservatory in Uxbridge, UB8, with a history of movement and an 8 to 20 mm gap at the house wall. What we found and why removal was the sensible option.
- Collapsed lath and plaster ceiling in a converted house, Crystal Palace. A hallway ceiling that came down after a year-long leak in a period house divided into flats in SE19. What we found in the floor structure and how to repair it.
- Party wall cracking in an Edwardian terrace divided into flats, East Dulwich. Cracks up to 20 mm in the party wall of an Edwardian terrace in East Dulwich, SE22, with three different causes, a gap in the fire separation and a staged repair.
Common questions
How quickly will I get the report?
Usually within 5 working days of the inspection. This is our normal turnaround, not a guarantee: at busy times, or when we are waiting for information, it can take longer, and we will tell you if it will. If you are working to a deadline, fast track brings it to within 48 hours of the inspection, from £120*.
Will I get a written report for a Specific Structural Inspection?
An SSI is a focused visit for one issue, so the engineer's findings and recommendations are sent to you by email rather than as a formal report. If you need a full written report, for example for a lender, a GSI or a Mortgage Structural Inspection is the right choice.
Do I need to be at the property?
Someone needs to let the engineer in. If you are buying and access is through an estate agent, send us the agent's contact details, especially their email address, and we will arrange it with them.
Can you inspect at the weekend?
Yes. Saturday and Sunday inspections are available, from £80* extra.
Can I share the report with my solicitor, lender or the seller?
You can share your report in confidence with your own professional advisers, such as your solicitor, and a Mortgage Structural Inspection report with your lender. Before sharing it with anyone else, such as the seller, an estate agent or a party wall surveyor, please ask us first. Extra copies or confirmation that someone else can rely on the report carry an administration fee, which we will tell you first.
Will the report help me renegotiate on a purchase?
It can. The report explains whether a problem is cosmetic or structural and what putting it right involves, which is what you need to get builders' quotes and decide whether the price still makes sense.
My home is bigger than a standard house. How does the price change?
The prices shown are for a standard house. For larger homes we confirm the price in writing before you book, so you know the cost before the engineer visits.



