Ballymoney · County Antrim
Subsidence repairs in Ballymoney
Subsidence in Ballymoney, as anywhere in County Antrim, usually comes back to the ground beneath the footings: clay drying out, a drain leaking or roots taking water. Knowing which applies decides whether the repair is a few days of crack work or a longer foundation scheme.
Guide price from£2,200per property inc VAT

- Postcodes
- BT53
- Population
- about 10,000
- Area
- County Antrim
- Pricing region
- Northern Ireland
Is County Antrim prone to ground movement?
Ballymoney, County Antrim: about 10,000 residents across postcode districts BT53. Neighbouring towns we cover: Coleraine (7 miles), Ballymena (17 miles) and Limavady (17 miles).
Most of County Antrim is on firmer ground than the clay belts of the south-east. Historic brine and salt working has caused ground movement in parts of County Antrim in the past. What you mostly find across County Antrim: red-brick terraces in Belfast, Victorian villas, and post-war and newer estates.
How much will subsidence repairs cost in Ballymoney?
For Ballymoney we use Northern Ireland rates. Treat the table as a budget guide, inc VAT; the price you pay is the one on your written quote.
| Item | Guide price | Per |
|---|---|---|
| Structural engineer's investigation and report | £440 – £1,750 | per property |
| CCTV drain survey (common first check) | £130 – £310 | per survey |
| Typical repair once the cause is dealt with: crack stitching and making goodest. | £2,200 – £10,600 | per property |
| Foundation strengthening where it is needed (see underpinning) | £880 – £3,100 | per metre of wall |
Which repair method suits a home in Ballymoney?
Remove the cause, then repair
Most subsidence is dealt with this way. The drain is repaired or the vegetation managed, the house is watched to confirm it has stabilised, and then the cracks are stitched, repointed and made good inside. It is the least disruptive route and usually the cheapest.
Best for: Clay movement or drain leaks where the cause can be removed
Crack stitching and making good
Once movement has stopped, cracked brickwork is cut along the bed joints, stainless helical bars are bonded in to tie the wall together, and the joints are repointed to match. Inside, plaster is renewed along the crack line before redecoration.
Best for: Category 1 to 3 cracking in walls that are otherwise sound
What happens when we carry out subsidence repairs in Ballymoney?
Send photos or call
Send photos of the cracks with a coin or tape for scale, and say when you first noticed them. We give a free initial assessment and suggest whether an engineer, a drain survey or your insurer comes first.
Find the cause
An independent chartered structural engineer inspects the house and, where needed, arranges a drain survey, trial pits or soil tests. We can arrange the engineer. The aim is to know what is moving, and why, before money goes on repairs.
Repairs and making good
Cracks are stitched and repointed outside, plaster is renewed along the crack lines inside, and sticking doors are eased. Where the work needs it, we deal with building control and hand over the paperwork.
Signs you may need subsidence repairs
- Wallpaper rippling or tearing where the wall meets the ceiling
- Fresh cracks showing on both the inside and outside of one wall
- A gap opening between the skirting board and the floor
Rules for subsidence repairs in Northern Ireland
In Northern Ireland, the Building Regulations (Northern Ireland) 2012 apply and the council’s building control service approves structural work such as underpinning; minor like-for-like repairs usually need no approval. The Party Wall Act does not apply in Northern Ireland, so work to shared walls depends on deeds and agreement with neighbours.
Subsidence repairs in Ballymoney: questions and answers
How much should I budget for subsidence repairs in Ballymoney?
Guide prices for subsidence repairs in Ballymoney start from about £2,200 per property, including VAT, on Northern Ireland 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 Ballymoney?
We do. Ballymoney and the surrounding area are covered, including nearby Coleraine and Ballymena. A free initial assessment from your photos is the first step.
Why do houses in County Antrim crack?
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. Only an investigation can say why a particular building has moved.
How long should I wait before repairing subsidence cracks?
Usually until the cause has been dealt with and the engineer is satisfied that movement has stopped. On clay that can mean watching the house through a summer and a winter. Repairing too early risks the same cracks opening again.
How do I know if cracks are subsidence?
Subsidence cracks are usually tapered, run diagonally from door and window corners, and show on both faces of the wall. Fine vertical cracks in new plaster are more often shrinkage. An engineer’s inspection, sometimes with monitoring, is the reliable way to tell.
Related work in Ballymoney
- Floor joist repairs
- Bay window subsidence repairs
- Extension pulling away repairs
- Subsidence insurance claim repairs
- Crack stitching
Subsidence repairs near Ballymoney
Get a free initial assessment for subsidence damage in Ballymoney: send photos or call, and a written quote follows once the repair is specified.