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GP Friel Ltd. are the market leader in delivering complex Underground Infrastructure in the Wellington region.

Our objective is to safely deliver on our promises and produce a high quality, resilient product of which we can be proud.

Our core business is in installing Water, Wastewater & Stormwater networks by trenched and trenchless solutions. We are approved to work on the Wellington Water network. We also offer ducting and chamber installation for other underground infrastructure particularly where it is packaged with one or more of the three waters.


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Over the last few weeks, we have been working on the connection for a new 450OD rising main in Bowen St, Wellington CBD on behalf of @wellingtonwater. The connection is approximately 6m deep from a new 2.55m diameter shaft into Wellington’s main intercepting sewer – a hand tunneled structure from the 1930’s.

Our team put in a couple of big shifts at the weekend on the Jervois Quay Stormwater Repair alongside E Carson & Sons, EN Ramsbottom, ATMS and a heap of other Wellington Contractors.

A very productive couple of weeks on our Featherston, Whitmore & Bowen St Rising Main Upgrade project has seen us ram a pipe 50m across Lambton Quay. Amazing to think that a critical piece of this project has now been installed underneath the ground without digging any holes in this busy intersection

Wallace St - 3 Waters Diversions & Renewals

Renewal & diversion of water, wastewater and stormwater assets in the Wallace St Corridor.

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Cuba St (Farmers) - 3 Waters Connection

This project included challenging commercial CBD connection work inside a busy construction site and outside the site in the pedestrianised section of Cuba St in Wellington’s CBD. 

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Brookside Subdivision New Network

This project included some challenges associated with working on a busy construction site in a greenfield environment. 

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G.P. Friel Ltd has been operating in the greater Wellington region since 1999 and is a well established firm in the installation of underground infrastructure.

We are a privately owned, family business that has worked hard to build strong, long term relationships with our clients based on mutual trust, honesty and our ability to deliver quality projects on time and to budget. We specialize in using innovative ideas, client partnering and trenchless techniques. We are experienced in working in a variety of environments, including confined and deep excavation works, high voltage sub-stations, state highways and the unique Wellington street environment. Our projects include sewer, stormwater and water renewal and maintenance for local government, stormwater upgrades for roading companies, drainage work for commercial construction firms and providing connections for new properties.

Our clients rely on our knowledge of the relevant codes and regulations required to carry out infrastructure work. We value and invest in our people and are proud that our success is based on their skills, determination and hard work.

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phone 04 473 5830


map Landfill Rd, Wellington