Precision Plumbing at Any Scale
Residential, Commercial, and Landmark Projects
Grantham Group
Plumbing Services
Grantham Plumbing provides high-quality plumbing solutions across New Zealand, supporting residential building projects, multi-unit developments, commercial buildings, and large-scale infrastructure projects.
With over 30 years of experience we combine technical expertise, industry knowledge, and commercial insight to deliver reliable, compliant plumbing systems.
Precision Plumbing Solutions Across New Zealand
Expert plumbing solutions, over 30 years experience, and a dedicated team.
What Sets Grantham Plumbing Apart
Grantham Plumbing delivers expert plumbing solutions by leveraging, industry best practices, innovative project management, we ensure every system is efficient, compliant, and tailored to client needs.
Commercial & Large-Scale Projects:
We thrive on complexity. Multi-storey apartments, hotel developments, retail precincts, and high-demand hospitality fit-outs are where our expertise shines. Grantham Plumbing coordinates with architects, engineers, and main contractors to deliver seamless, end-to-end plumbing solutions.
Residential & Multi-Unit Expertise:
From bespoke homes to Kāinga Ora housing subdivisions, our team ensures systems are durable, compliant, and designed for modern living. Every detail from hot water reticulation to sanitary plumbing is executed to exacting standards.
Nationwide Reach:
We have successfully delivered projects throughout New Zealand, managing logistics, product supply, and compliance requirements for nationwide projects with the same precision and efficiency as local builds.
From planning and design through installation and handover, our teams manage every stage with efficiency, clarity, and attention to detail.
New Build Installations
Comprehensive plumbing systems for residential, commercial, and specialised builds, installed to meet the demands of today and the longevity expectations of tomorrow.
What we do:
Full system design and installation
Multi-unit residential developments and commercial builds
Hot and cold water reticulation, sanitary systems, and fixtures
Integration with Grantham Drainage for complete underground works
Commercial Projects
High-performance plumbing for large-scale commercial environments
From amenity blocks to specialised compliance-driven systems, our team delivers fit-outs that support heavy use, complex requirements, and strict industry standards.
What we do:
Plumbing systems for commercial apartments, hotels, gyms, and hospitality spaces
Trade waste design and installation
Backflow prevention and ongoing testing
High-capacity hot water systems
Seamless coordination with Grantham Drainage & Hydro for multi-service delivery
Maintenance & Repairs
Proactive care and rapid response to keep your assets running.
Flexible service programs designed to reduce downtime, prevent failures, and extend the life of your systems.
How we can help:
Urgent repairs and troubleshooting
Preventative maintenance schedules
Plumbing upgrades and optimisations
Option to bundle Hydro jetting, CCTV, or drainage services for ongoing site coverage
Scale & Capability
From planning and design through installation and handover, our teams manage every stage with efficiency, clarity, and attention to detail.
Grantham Plumbing delivers expert plumbing solutions by leveraging modern technology, industry best practices, and innovative project management, we ensure every system is efficient, compliant, and tailored to client needs.
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We thrive on complexity. Multi-storey apartments, hotel developments, retail precincts, and high-demand hospitality fit-outs are where our expertise shines. Grantham Plumbing coordinates with architects, engineers, and main contractors to deliver seamless, end-to-end plumbing solutions.
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From bespoke homes to Kāinga Ora housing subdivisions, our team ensures systems are durable, compliant, and designed for modern living. Every detail from hot water reticulation to sanitary plumbing is executed to exacting standards.
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We have successfully delivered projects across New Zealand, managing logistics, product supply, and compliance requirements for nationwide projects with the same precision and efficiency as local builds.
Innovation & Project Delivery
Advanced project management systems for planning and scheduling.
BIM-assisted spatial planning and complex installations.
Connected site systems for monitoring and reporting.
Coordinated solutions with Grantham Hydro and Drainage.
on time, on budget, and with zero compromise on quality-
![Double Tree Karaka Modern multi-story office building with glass windows and landscaped parking lot. Grantham Group Project]()
Double Tree by Hilton, Karaka
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![A digital rendering of a multi-story residential building with brick exterior, balconies, and large windows, situated on a sloped street. Grantham Group Project]()
Potiki Apartments, 42 Units
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![Line drawing of a large, multi-story suburban house with multiple windows and a staircase at the front entrance. Grantham Group Project]()
St Stephens Tipene College
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![Rendering of a modern commercial building with large glass windows and a sign reading 'SIGNAGE' on the facade. Grantham Group Project]()
Waiata Shores Medical Centre & Retail Units
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![A digital rendering of modern townhomes with gray and black exterior siding, surrounded by landscaped lawns, trees, and sidewalks, with people walking and cars parked. Grantham Group Project]()
Leybourne Crescent Subdivision
Residential Homes • Apartment Buildings • Commercial buildings & retail • Medical centres • Schools & community facilities • Industrial sites & processing plants • Food outlets • commercial kitchens
We’ve got you covered Nationwide.
Licensed, experienced, and fully compliant teams
End-to-end project delivery from design to handover
Scalable resources for residential, commercial, and large-scale projects
Nationwide services and project coordination expertise
Commitment to safety, quality, and innovation.
Whether you’re planning a new build, fit-out, or large-scale commercial project, our specialist team is ready to help.
At Grantham Group, we believe great infrastructure goes hand-in-hand with environmental responsibility. We integrate sustainable practices across our projects, from material selection to energy- and water-efficient systems, ensuring our work supports both client goals and a healthier environment.
Our approach reflects our commitment to positive impact, balancing innovation, efficiency, and long-term performance with care for the communities and spaces where we work.
