Top 30 Construction Companies Northern Ireland 2027
Last updated: November 2026 | Source: Barbour ABI
The Top 30 Construction Companies Northern Ireland League Table shows you the top contractors working across the region in an easy-to-use interactive table. All company rankings are sourced directly from our leading Construction Project Leads Platform.
The top contractors league tables rank main contractors by the total value of the contract awards they have won. Only projects with a start date falling between six months before and six months after the dataset date are counted towards a contractor’s ranking. This dataset covers April 2026 to April 2027. Discover the biggest contractors shaking up the UK industry in our table below.
Graham (NI) is Top Construction Company in Northern Ireland
According to Barbour ABI’s extensive planning data, the top construction company in Northern Ireland is Graham (NI) with 3 projects valued at £88m.
2nd place – KWCL (Kevin Watson Construction Ltd) – 3 projects valued at £80m
3rd place – McAleer & Rushe Group – 1 project valued at £75m
Key findings: top construction companies in Northern Ireland
- The top 30 Northern Ireland construction companies are working on 43 projects worth a combined £583m.
- The top 5 contractors hold £312m, or 54% of the table’s total value, across 7 projects (16% of all projects).
- The largest main contractor by project value is Graham (NI), with 3 projects worth £88m.
- Two contractors tie for the largest by project count: P&K McKaigue Ltd and McCusker Contracts, each with 4 projects. P&K McKaigue’s are worth £23m and McCusker’s £5m.
View other top construction company rankings by region and city
Regional Tables: UK | London | South East | South West | East of England | East Midlands | West Midlands | Northern Ireland | 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
Top 30 Construction Companies Northern Ireland 2027 League Table
| Position | Contractor | Region | Number of Projects | Total Value | View Projects |
|---|---|---|---|---|---|
| 1 | Graham (NI) | Northern Ireland | 3 | £ 88,000,000 | View projects |
| 2 | KWCL (Kevin Watson Construction Ltd.) | Northern Ireland | 1 | £ 80,290,000 | View projects |
| 3 | McAleer & Rushe Group | Northern Ireland | 1 | £ 74,500,000 | View projects |
| 4 | Hagan Homes Ltd | Northern Ireland | 1 | £ 36,740,000 | View projects |
| 5 | Lagan Homes Ltd | Northern Ireland | 1 | £ 32,550,000 | View projects |
| 6 | DB Building Design | Northern Ireland | 2 | £ 30,720,000 | View projects |
| 7 | Braidwater Group Ltd | Northern Ireland | 2 | £ 27,900,000 | View projects |
| 8 | Felix O'Hare & Co. Ltd | Northern Ireland | 2 | £ 26,850,000 | View projects |
| 9 | P&K McKaigue Ltd | Northern Ireland | 4 | £ 22,880,000 | View projects |
| 10 | Woodvale Construction | Northern Ireland | 2 | £ 22,000,000 | View projects |
| 11 | Simpson Developments Ltd | Northern Ireland | 1 | £ 17,360,000 | View projects |
| 12 | LS Construction | Northern Ireland | 1 | £ 14,960,000 | View projects |
| 13 | Neptune Group | Northern Ireland | 1 | £ 10,230,000 | View projects |
| 14 | Alskea Ltd | Northern Ireland | 1 | £ 10,230,000 | View projects |
| 15 | McGrath Engineering | Northern Ireland | 1 | £ 8,700,000 | View projects |
| 16 | Hanmar Site Investigation Services Ltd | Northern Ireland | 1 | £ 7,480,000 | View projects |
| 17 | Martin & Hamilton Ltd. | Northern Ireland | 2 | £ 6,961,000 | View projects |
| 18 | RPK Construction Ltd | Northern Ireland | 1 | £ 6,380,000 | View projects |
| 19 | Arona Developments Ltd | Northern Ireland | 1 | £ 6,380,000 | View projects |
| 20 | Glasgiven Contracts Ltd. | Northern Ireland | 1 | £ 6,000,000 | View projects |
| 21 | Geda Construction Limited | Northern Ireland | 1 | £ 5,940,000 | View projects |
| 22 | Cleary Contracting Ltd | Northern Ireland | 1 | £ 5,800,000 | View projects |
| 23 | Roxborough Plant & Construction Ltd | Northern Ireland | 1 | £ 4,800,000 | View projects |
| 24 | McCallion Group | Northern Ireland | 1 | £ 4,700,000 | View projects |
| 25 | McCusker Contracts | Northern Ireland | 4 | £ 4,650,000 | View projects |
| 26 | Northland Construction Ltd | Northern Ireland | 1 | £ 4,400,000 | View projects |
| 27 | JJ Rafferty and Sons Ltd. | Northern Ireland | 1 | £ 4,400,000 | View projects |
| 28 | MDK Construction | Northern Ireland | 1 | £ 4,200,000 | View projects |
| 29 | Abcord Buildings Services | Northern Ireland | 1 | £ 3,520,000 | View projects |
| 30 | Brendan Loughran & Sons Ltd. | Northern Ireland | 1 | £ 3,500,000 | View projects |
| Position | Contractor | Region | Number of Projects | Total Value | View Projects |
|---|---|---|---|---|---|
| 1 | Graham (NI) | Northern Ireland | 3 | £ 88,000,000 | View projects |
| 2 | KWCL (Kevin Watson Construction Ltd.) | Northern Ireland | 1 | £ 80,290,000 | View projects |
| 3 | McAleer & Rushe Group | Northern Ireland | 1 | £ 74,500,000 | View projects |
| 4 | Hagan Homes Ltd | Northern Ireland | 1 | £ 36,740,000 | View projects |
| 5 | Lagan Homes Ltd | Northern Ireland | 1 | £ 32,550,000 | View projects |
| 6 | DB Building Design | Northern Ireland | 2 | £ 30,720,000 | View projects |
| 7 | Braidwater Group Ltd | Northern Ireland | 2 | £ 27,900,000 | View projects |
| 8 | Felix O'Hare & Co. Ltd | Northern Ireland | 2 | £ 26,850,000 | View projects |
| 9 | P&K McKaigue Ltd | Northern Ireland | 4 | £ 22,880,000 | View projects |
| 10 | Woodvale Construction | Northern Ireland | 2 | £ 22,000,000 | View projects |
| 11 | Simpson Developments Ltd | Northern Ireland | 1 | £ 17,360,000 | View projects |
| 12 | LS Construction | Northern Ireland | 1 | £ 14,960,000 | View projects |
| 13 | Neptune Group | Northern Ireland | 1 | £ 10,230,000 | View projects |
| 14 | Alskea Ltd | Northern Ireland | 1 | £ 10,230,000 | View projects |
| 15 | McGrath Engineering | Northern Ireland | 1 | £ 8,700,000 | View projects |
| 16 | Hanmar Site Investigation Services Ltd | Northern Ireland | 1 | £ 7,480,000 | View projects |
| 17 | Martin & Hamilton Ltd. | Northern Ireland | 2 | £ 6,961,000 | View projects |
| 18 | RPK Construction Ltd | Northern Ireland | 1 | £ 6,380,000 | View projects |
| 19 | Arona Developments Ltd | Northern Ireland | 1 | £ 6,380,000 | View projects |
| 20 | Glasgiven Contracts Ltd. | Northern Ireland | 1 | £ 6,000,000 | View projects |
| 21 | Geda Construction Limited | Northern Ireland | 1 | £ 5,940,000 | View projects |
| 22 | Cleary Contracting Ltd | Northern Ireland | 1 | £ 5,800,000 | View projects |
| 23 | Roxborough Plant & Construction Ltd | Northern Ireland | 1 | £ 4,800,000 | View projects |
| 24 | McCallion Group | Northern Ireland | 1 | £ 4,700,000 | View projects |
| 25 | McCusker Contracts | Northern Ireland | 4 | £ 4,650,000 | View projects |
| 26 | Northland Construction Ltd | Northern Ireland | 1 | £ 4,400,000 | View projects |
| 27 | JJ Rafferty and Sons Ltd. | Northern Ireland | 1 | £ 4,400,000 | View projects |
| 28 | MDK Construction | Northern Ireland | 1 | £ 4,200,000 | View projects |
| 29 | Abcord Buildings Services | Northern Ireland | 1 | £ 3,520,000 | View projects |
| 30 | Brendan Loughran & Sons Ltd. | Northern Ireland | 1 | £ 3,500,000 | View projects |
How are these tables ranked?
The top contractors league tables are ranked by total contract award value won by the main contractor. The projects that influence the ranking have a start date from 6 months back through to 6 months forward.
How to use this league table
Top construction companies are ranked by value by default, but you have several ways to customise your view:
- Number of results: Use the display toggle to show between 10 and all 100 companies at once.
- Project value: Click the value column to switch between highest and lowest.
- Search: Use the search bar in the upper right hand corner of the table to search for project names, values, start dates, or positions.
- Number of projects: Click the number of projects column to switch between the highest and lowest project count for each company
- Alphabetical sorting: Click the project name, sector, or location columns to sort A–Z or Z–A.
Want to see the projects behind the rankings?
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View more top construction companies in 2027
Get a free monthly update on the top performers in the industry
Barbour ABI produces a Top 50 report every month directly on our website that highlights the top performers in construction. It showcases the top:
- Contractors
- Architects
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The report is published each month and provides a 12 month review to see who’s consistently in the top rankings.
Top Construction Projects League Tables
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.
View the Top Construction Tenders League Tables
FAQs
- Graham (NI)
- KWCL (Kevin Watson Construction Ltd.)
- McAleer & Rushe Group
- Hagan Homes Ltd
- Lagan Homes Ltd
- DB Building Design
- Braidwater Group Ltd
- Felix O’Hare & Co. Ltd
- P&K McKaigue Ltd
- Woodvale Construction
By project value: Graham (NI), with £88m across 3 projects. KWCL (Kevin Watson Construction Ltd.) follows at £80m.
By project count: A tie between P&K McKaigue Ltd and McCusker Contracts, each with 4 projects. P&K McKaigue’s are worth £23m and McCusker’s £5m.
A tier 1 contractor is the main contractor appointed directly by the client to deliver a construction project, taking overall responsibility for programme, cost, quality and safety. It manages the supply chain beneath it, appointing and coordinating the tier 2 subcontractors and tier 3 suppliers who carry out the specialist works.
No, it is ranked by the value of total projects reported on Barbour ABI’s Construction Project Leads Platform.
The League Tables produced by Barbour ABI are updated on a quarterly basis.
Clients of Barbour ABI can view the companies and projects behind our rankings directly on the platform. If you’re not a client and would like to see how you could use our advanced construction data to help win more work, book a free demo today.
