Sevenoaks · Kent
Structural surveys and crack monitoring in Sevenoaks
Ground across Sevenoaks and Kent varies, and on clay the same crack can open in summer and close in winter. Readings taken in both seasons show the engineer which pattern applies before anyone decides on a repair.
Guide price from£560per property inc VAT
- Postcodes
- TN13
- Population
- about 30,000
- Area
- Kent
- Pricing region
- South East
Why does the ground in Kent matter for structural surveys and crack monitoring?
Sevenoaks, Kent: about 30,000 residents across postcode districts TN13. We also take enquiries from nearby Tonbridge (6 miles), Swanley (9 miles) and Bromley (10 miles).
Shrinkable clay is widespread in Kent. Parts of Kent lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. What you mostly find across Kent: Victorian terraces in the Medway towns, weatherboarded and Wealden houses, 1930s semis and seaside bungalows.
What to expect when we carry out structural surveys and crack monitoring
Engineer’s inspection
We can arrange an independent chartered structural engineer to inspect. They record the damage, assess likely causes and recommend whether monitoring, drain surveys or trial pits are needed before any repair decision.
Install monitoring points
Tell-tales, measuring studs or level points are fixed at the locations the engineer chooses. A base reading is taken on the first visit, so every later reading can be compared against it.
Repair or close
If the readings show the house is stable, the engineer specifies the repair and we confirm a fixed price in writing. If movement continues, the cause is investigated further before a foundation repair is designed.
Is it time for structural surveys and crack monitoring? Common signs
- Cracks reopening after being filled and decorated
- An insurer or loss adjuster asking for monitoring
- Doors and windows sticking at some times of year only
What should you budget for structural surveys and crack monitoring in Sevenoaks?
Prices in Sevenoaks are worked out on South East rates. They include VAT and are a starting point: access, the extent of the damage and whether an engineer or building control is involved all move the figure.
| Item | Guide price | Per |
|---|---|---|
| Structural engineer's inspection and report | £560 – £2,250 | per property |
| Crack monitoring: installation and three seasonal readings | £1,600 – £2,700 | per programme |
| Extra monitoring visit | £470 | per visit |
Repair options we may recommend
Level monitoring
Survey points are fixed around the building and their heights measured against a stable datum on each visit. This shows whether one part of the house is dropping or rising compared with the rest, which crack widths alone cannot reveal.
Best for: Suspected subsidence or heave across a whole house
Tell-tales and crack-width monitoring
Gauges are fixed across key cracks and read at set intervals, or reference studs are measured with callipers to a fraction of a millimetre. The readings show whether each crack is widening, closing or stable, and whether any change follows the seasons.
Best for: Tracking individual cracks over the seasons
Rules for structural surveys and crack monitoring in England
Like-for-like repairs such as crack stitching and repointing do not usually need building control approval in England, but anything that changes or strengthens the structure, such as underpinning or rebuilding a wall, does. If the work touches a party wall, the Party Wall etc. Act 1996 may apply.
Your structural surveys and crack monitoring questions
How much should I budget for structural surveys and crack monitoring in Sevenoaks?
Guide prices for structural surveys and crack monitoring in Sevenoaks start from about £560 per property, including VAT, on South East rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Can you survey a property in Sevenoaks?
We do. Sevenoaks and the surrounding area are covered, including nearby Tonbridge and Swanley. A free initial assessment from your photos is the first step.
Why do houses in Kent crack?
North Kent sits on London Clay, central Kent on Gault and Weald Clays and the Downs on chalk, so shrinkable clay is widespread. East Kent around Deal and Dover had a small deep coalfield, worked until the late 1980s. Only an investigation can say why a particular building has moved.
What do BRE crack categories mean?
BRE Digest 251 groups damage by typical crack width. Category 0 is under 0.1 mm, 1 up to 1 mm, 2 up to 5 mm, 3 from 5 to 15 mm or several of about 3 mm, 4 from 15 to 25 mm, and 5 usually over 25 mm. It is a guide to severity, not a diagnosis of cause.
Who carries out the crack monitoring?
An independent chartered structural engineer designs the monitoring and interprets the readings. We can arrange the engineer for you. We are the repair contractor, so we carry out the repair the engineer specifies once the monitoring has shown what is needed.
Related work in Sevenoaks
- Concrete repairs
- Resin injection ground stabilisation
- Boundary and garden wall repairs
- Gable end wall repairs
- Extension pulling away repairs
Structural surveys and crack monitoring near Sevenoaks
Send photos of the cracks at your Sevenoaks home, and we will give a free initial assessment and say whether an engineer’s inspection is worth arranging.