Homes we inspect in Isleworth
Old Isleworth, by the Thames next to Syon Park, has Georgian and earlier houses in a conservation area. Inland there are Victorian and Edwardian terraces around the town centre, and large areas of interwar housing towards Spring Grove and Osterley.
Older riverside houses often show historic movement. The question is usually whether it is still active, which a careful inspection, and sometimes monitoring, can answer.
Common structural issues in Isleworth
- Historic movement in older riverside houses.
- Properties near the River Crane and the Duke of Northumberland's River, where ground conditions change.
- Cracks linked to trees near interwar houses.
- Junctions between extensions or loft conversions and the original house.
- Leaking drains softening the ground.
Ground conditions
Near the Thames and the River Crane, Isleworth has alluvium and made ground, with river terrace gravels and brickearth over London Clay further inland. Parts of Isleworth are in a flood zone, so we look at drainage and flood risk as well as the soil.
We check the British Geological Survey records for every address we inspect, because ground conditions can change from one street to the next.
Services in Isleworth
- Structural inspections: Specific (SSI) from £420*, General (GSI) from £540* and Comprehensive (CGSI) from £880*.
- Mortgage structural reports when your lender's valuer asks for an engineer.
- Insurance structural reports and subsidence investigations.
- Wall and chimney breast removal calculations for Building Control.
- Extension and loft conversion design.
- Freeholder consent reports for leasehold flats.
* Prices are a guide only and VAT may be added. Contact us for an accurate price.
Arranging an inspection in Isleworth
Send us the postcode, whether it is a house or a flat, how many bedrooms it has and a few photos of what you have noticed, or your valuer's letter. We will recommend the right service and give you a price in writing before you book. Our engineers travel to Isleworth from our office on Turnham Green Terrace in Chiswick, with weekday and weekend visits available. See our prices or request a quote.
Local guides
Nearby areas we cover
See all areas we cover across London.
Common questions
Do you have an office in Isleworth?
No. Our office is at Gable House, 18–24 Turnham Green Terrace, Chiswick, W4 1QP, and our engineers travel to Isleworth for inspections and site visits.
Do you need to monitor cracks before writing a report?
Not usually. Most reports are written after a single visit. Where it is not clear whether movement is still happening, we may recommend monitoring over several months, and we explain why before you commit.



