How we select the top construction companies in Northern Ireland
We’ve curated the Barbour ABI data to bring you the top construction companies in Northern Ireland in 2026. This includes the top contractors by total value of projects across all sectors with a start date 6 months back, and 6 months forward. We track tier 1 contractor and subcontractor activity across the UK.
Graham Construction Limited is Top Construction Company in Northern Ireland
According to Barbour ABI planning data, Graham Construction Limited is the top construction company in Northern Ireland with two projects valued at £71m. In second place is Henry Brothers Ltd with one project valued at £70m. Fraser Houses (NI) Limited takes third place in the top construction companies in Northern Ireland with one project valued at £42m.
Last updated: February 2026
Top Construction Companies 2026
Regional Tables: United Kingdom | London | South East | South West | East of England | East Midlands | West Midlands | North West | Wales | Yorkshire & the Humber | North East | Scotland
City and County Tables: Aberdeen | Birmingham | Bristol | Cheshire East | Cheshire West & Chester | East Sussex | West Sussex | Essex | Hampshire | Hertfordshire | Leeds | Liverpool | Manchester | Newcastle-Upon Tyne | Norwich | Nottingham | Sheffield | South Yorkshire | West Yorkshire
| Position | Contractor | Project Count | Total Project Value | View Projects |
|---|---|---|---|---|
| 1 | Graham Construction Limited | 2 | £ 70,500,000 | View Projects |
| 2 | Henry Brothers Ltd | 1 | £ 70,000,000 | View Projects |
| 3 | Fraser Houses (NI) Limited | 1 | £ 41,580,000 | View Projects |
| 4 | Alskea Ltd | 1 | £ 33,660,000 | View Projects |
| 5 | DB Building Design | 2 | £ 30,720,000 | View Projects |
| 6 | MJ McBride Construction Ltd | 2 | £ 29,680,000 | View Projects |
| 7 | P&K McKaigue Ltd | 3 | £ 26,440,000 | View Projects |
| 8 | Kelly Brothers Ltd | 2 | £ 25,300,000 | View Projects |
| 9 | McKelvey Construction | 2 | £ 19,320,000 | View Projects |
| 10 | JP Timber Frames Ltd | 1 | £ 18,040,000 | View Projects |
| 11 | OB Construction | 1 | £ 18,000,000 | View Projects |
| 12 | Medlock FRB Limited | 11 | £ 15,874,800 | View Projects |
| 13 | McCarthy & Stone Retirement Lifestyles | 7 | £ 15,473,800 | View Projects |
| 14 | Boconnell Properties Ltd | 1 | £ 11,160,000 | View Projects |
| 15 | Ashe Construction Limited | 6 | £ 10,378,691 | View Projects |
| 16 | Neptune Group | 1 | £ 10,230,000 | View Projects |
| 17 | Lindum Construction Company Limited | 8 | £ 9,640,153 | View Projects |
| 18 | Morgan Sindall Group | 9 | £ 9,467,736 | View Projects |
| 19 | Clanmil Housing Association | 1 | £ 9,100,000 | View Projects |
| 20 | TJ Evers Limited | 6 | £ 9,100,000 | View Projects |
| 21 | MSM Contracts Ltd. | 1 | £ 9,000,000 | View Projects |
| 22 | Neilcott Construction Limited | 5 | £ 8,695,500 | View Projects |
| 23 | Vinci Construction UK Limited | 6 | £ 8,471,687 | View Projects |
| 24 | Quinn (London) Limited | 5 | £ 8,283,678 | View Projects |
| 25 | Bribar Construction Ltd. | 1 | £ 8,000,000 | View Projects |
Top Construction Companies across the UK
Barbour ABI tracks and reports on companies working on projects across the UK from pre-planning stages right through to completion. Our 3,000 happy clients use this data to supply their products and services on projects that are right for them, with the most up-to-date contact information available on the market.
Top Construction Projects
Access the top 100 construction projects happening in the UK. The projects are ranked by total value of projects across a 12-month period and can be filtered by sector, location, start date, value, and links straight to the Barbour ABI project leads platform. View the top construction projects overall in the UK as well as major regions and cities.
Tender League Tables
View the latest and hottest projects out to tender in the UK. Filter by value, location, number of bidders, start dates, and link straight to the Barbour ABI project leads platform to see the project in full detail. The Tender League Tables are separated by sector to give you the most insights on construction activity in your field.
Monthly Top 50 League Tables from Barbour ABI
Barbour ABI’s Top 50 League Tables is designed to provide company intelligence for those working within construction and beyond. We report on the top 50 clients, architects and contractors for the month, as well as the last 12 months.
We publish these league tables directly on our website each and every month for free.
