Construction Companies in Northern Ireland
Browse 5 construction companies in Northern Ireland. Read reviews from subcontractors, suppliers, and trade professionals.
All Regions
Northern Ireland's big contractors work far beyond it, across Great Britain and Ireland. The largest we list, by turnover in their latest accounts, are FP McCann in Magherafelt, Farrans and Gilbert-Ash in Belfast, and Heron Bros.
How they pay
All four file government payment reports under the same UK rules as the rest of the country, with average payment times from 15 to 39 days. Compare them on the payment league table, and check each company's page for the share of invoices paid late.
When a big contractor fails
Lagan Construction Group, one of Northern Ireland's best-known contractors, went into administration in March 2018. Its directors' statement of affairs showed about £22m owed to unsecured creditors, and only a small prescribed part was expected to be shared among them. See the biggest UK construction failures.
Before you take on a package, see how much of your money it would tie up with the cash tied up calculator.
Updated October 2026. Company figures from their accounts and government payment reports (see each company's page). Sources: Company figures from their accounts, payment reports and the Lagan statement of affairs, linked on each page.
Average days to pay suppliers, fastest first, from each company's latest government report.
| Company | Average days |
|---|---|
| Heron Bros. | 15 |
| FP McCann | 27 |
| Gilbert-Ash | 30 |
| Henry Brothers | 32 |
| Farrans | 39 |
Check Payment Practices (GOV.UK). Averages cover all suppliers, not only subcontractors.
Larger firms based in the region, by year. 2026 is the year so far.
| Year | Failures |
|---|---|
| 2018 | 2 |
| 2019 | 0 |
| 2020 | 0 |
| 2021 | 0 |
| 2022 | 0 |
| 2023 | 0 |
| 2024 | 1 |
| 2025 | 0 |
| 2026 | 0 |
Our failures register, from Companies House and The Gazette.
Showing 5 companies