Our Vision

At O'Neill & Brennan, our goal is to maintain a standard of excellence in all that we do. This is made possible by our exceptional team of talented individuals, who embody a strong team ethic and foster an inclusive culture within the company.

In our quest to be the best, we strive to attract, retain, and reward staff who share our vision and can contribute to its realisation.

Our Mission

At O'Neill & Brennan, we are committed to delivering top-notch construction and industrial services to our valued customers. We accomplish this by upholding the highest standards of safety, integrity, and efficiency.

Our dedication to environmental responsibility remains unwavering as we strive to foster growth within our employees and the communities we serve.

Our Core Values


We aim to exceed our client’s expectations through teamwork and trust, by ensuring we deliver on our promises.


We believe respect forms the basis of all our relationships with clients and workforce.


Our aim is to never compromise our brand's trusted reputation


O'Neill & Brennan use sustainable resources to meet the expectations of our customers, staff and communities.

Social Value Driven

Through our Social Value activity, we aim to increase equality, improve wellbeing, and provide opportunities for everyone via a culture of fairness and inclusion.


We insist all our operatives work in a safe environment.

Why Join?

Become part of a long-standing, trusted brand

Nationwide Offices

Room for progression

The company is continually growing

Competitive salary and commissions

Excellent Benefits Package

Up to 24 days of annual leave

Regular Team Building Staff Social Events

Training and personal development

Giving Back

The O&B Foundation is our way of giving back to the communities and regions where we operate.

At O'Neill & Brennan, we take pride in sponsoring charities that resonate with both our employees and clients, and that we feel passionately about. Over the years, we have supported a diverse range of charitable events, including a charity 5-a-side tournament in support of the Lighthouse Club.

Through the O&B Foundation, we are committed to ensuring that the efforts we make today will have a positive impact on future generations.


At O'Neill & Brennan, we are dedicated to playing a pivotal role in promoting sustainable resource usage within the construction industry. Our aim is to meet the needs and expectations of communities without compromising future generations and the planet.

To ensure that we achieve this goal, we have developed a strategy based on five key pillars:

  1. Establishing partnerships to drive impact.
  2. Providing good employment opportunities.
  3. Encouraging innovation and skills development.
  4. Supporting communities.
  5. Decarbonising the construction process.

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Become part of a long-standing, trusted brand