County Antrim · Northern Ireland
Structural surveys and crack monitoring in County Antrim
We arrange surveys and price structural surveys and crack monitoring throughout County Antrim. Most of County Antrim is on firmer ground than the clay belts of the south-east, and we take that into account before recommending a method.
Guide price from£440per property inc VAT
- Area
- County Antrim
- Pricing region
- Northern Ireland
- Ground
- Mostly firmer ground
- Towns listed
- 8
How do local ground conditions affect structural surveys and crack monitoring in County Antrim?
County Antrim is largely basalt over chalk, with soft estuarine 'sleech' along Belfast Lough that is notorious for settlement. Historic salt mining is recorded near Carrickfergus.
Historic brine and salt working has caused ground movement in parts of County Antrim in the past. Housing stock in County Antrim: Red-brick terraces in Belfast, Victorian villas, and post-war and newer estates.
Methods for structural surveys and crack monitoring
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
Engineer’s structural inspection and report
A chartered structural engineer visits, records the cracks, checks the walls, floors, drains and nearby trees, and writes a report on the likely cause and next steps. It may recommend monitoring, investigations such as trial pits, or a repair specification.
Best for: A first expert opinion on any significant cracking
From first photo to finished repair
Free initial assessment
Send photos of the cracks with something for scale and tell us when they appeared. We give a free view on whether an engineer’s inspection is worthwhile, and whether your insurer should be told first.
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.
Seasonal readings
Readings are taken at intervals across the seasons, typically including late summer when clay is driest and late winter when it is wettest. The engineer checks each set against the base reading and decides whether more visits are needed.
Symptoms that point to structural surveys and crack monitoring
- A crack you are unsure is old or new
- An insurer or loss adjuster asking for monitoring
- A mortgage valuation recommending a structural engineer’s report
- Doors and windows sticking at some times of year only
Guide prices for structural surveys and crack monitoring in County Antrim
The ranges below reflect typical Northern Ireland costs for structural surveys and crack monitoring, including VAT. Scaffold, access and making good can push a job to the top of the range.
| Item | Guide price | Per |
|---|---|---|
| Structural engineer's inspection and report | £440 – £1,750 | per property |
| Crack monitoring: installation and three seasonal readings | £1,300 – £2,100 | per programme |
| Extra monitoring visit | £370 | per visit |
Do you need approval for structural surveys and crack monitoring in Northern Ireland?
In Northern Ireland, minor repairs usually need no approval, but structural work comes under the Building Regulations (Northern Ireland) 2012 and council building control. There is no Party Wall Act in Northern Ireland.
Towns in County Antrim we cover for structural surveys and crack monitoring
Frequently asked questions
Is the ground in County Antrim prone to subsidence?
County Antrim is largely basalt over chalk, with soft estuarine 'sleech' along Belfast Lough that is notorious for settlement. Historic salt mining is recorded near Carrickfergus. Historic brine and salt working has caused ground movement in parts of County Antrim in the past. Only an investigation on site can say why a particular building has moved.
How much will structural surveys and crack monitoring cost in County Antrim?
On Northern Ireland rates, structural surveys and crack monitoring starts from about £440 per property, including VAT. The written price depends on the extent of the damage, access and whether an engineer or building control is needed.
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.
What happens after the monitoring ends?
If the readings show the building is stable, the engineer specifies a repair, usually crack stitching and making good. If movement continues, further investigation and a foundation repair design follow. Either way, we confirm a fixed price in writing once the repair is specified.