Mannion Passive House Builders, founded by Galway native, Cyril Mannion, provides building contractor services from Dublin to Galway and throughout the West of Ireland.


We have earned the reputation for being the forefront of constructing A Rated, Low Energy and Passive buildings, achieving high-performance energy efficiency at cost effective prices.

Mannion Passive House Builder

Why Choose Us?


We are passionate about bringing Architectural drawings to life, managing every project to deliver the highest quality of work on schedule and within budget.

  • Experienced team with 35 years plus in the industry
  • Range of tailored services and building systems
  • Reputation for being at the forefront of low energy building
  • Project management to delivery highest quality finish
  • Quality Constructor

Contact us today to discuss your project

Our Services


We offer full Building Contractor services with a range of building system and building finish options for construction to a number of low energy building standards to guarantee satisfaction for our clients.


We offer Building Contractor services with the expertise to retrofit appropriate key components of an energy efficient build, also to suit any project striving to achieve certification to EnerPhit standard.


We also provide contracting services for commercial projects, please see our sister company Mannion Build Expertise for further information.

Building Contractor Company in Galway

Mannion Passive House Builder has over 35 years’ experience in the construction of buildings and houses in Galway, West of Ireland and beyond. We have delivered various project sizes.  Our company is one of the best-known Galway Construction Companies providing new construction, refurbishments, upgrades, groundworks for residential, business and the commercial sectors. Among all the leading and expertise Construction Companies in Galway, Mayo, Clare, Limerick, and the west of Ireland, we are a one-stop solution for all kinds of A2 rated NZEB Building Services in Galway providing increased energy efficiency buildings at cost-effective rates.

At Mannion Passive House Builder, we directly monitor every project established by our House Builders in Galway and nothing is accepted unless it reaches our highest expectations. All the buildings, designed by our A2 House Contractor in Galway, are of modern design and have an A2 Energy Rating. Our team of professional and reputable Builders in Galway includes architects, developers, and manufacturers to ensure that the building is of outstanding quality, forming the vision of innovation that is desired. Our team of professional plumbers, architects, craftsmen, interior designers, and engineers are all willing to assist with the project twenty-four seven.

With us, you can also employ a highly skilled Commercial Building Contractor in Galway to facilitate you to make your perfect workspace. We are a full-service business, that can take account of every detail of workplace remodeling, adding extensions or refurbishing the premises. Also, our School Building Contractor in Galway has the required experience, skills, resources, knowledge, and dedication to provide an outstanding school building project.

Our experienced Construction Contractor in Galway team is prepared to support you by developing customized project management approaches and ideas both for macro and micro building projects. As a Client-focused company, we seek to achieve and exceed the Customers’ expectations for all contracts we undertake. Also, we are amongst the largest Building Contractors in Galway, well known for offering the most affordable and high-quality facilities.

Bringing Architectural drawings
to life since 2007

Working with Architects and their clients to deliver superior levels of comfort and low running costs
through our expertise and passion for building to the highest standards.