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Through the three generations of Dempsey family leadership, Grammar Group has grown and changed with industry. We have dedicated ourselves to staying on the forefront of technology and delivering on our family values of exceptional service to our community and customers.
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Since 1948, Grammar Group has provided trusted trade solutions built on care, systemized execution, and accountability. By integrating electrical, plumbing, roofing, and HVAC services, we deliver the full value of a single, coordinated partner across all facility needs.
Having one dedicated partner eliminates subcontractor chaos, providing predictable delivery, clear communication, and single-source accountability. From same-day responsive maintenance callouts to complex commercial, industrial, and project work, we ensure your operations run smoothly without interruption. Focused on long-term relationships over short-term transactions, Grammar Group delivers reliable quality-getting the job done once, done right.
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Our leadership team brings decades of industry experience - not just on the tools, but across project management, compliance, business operations, and client relationships.
They’re hands-on, forward-thinking, and committed to delivering high-quality work and a strong team culture.
Our team of tradesmen are all New Zealand registered and bring a broad range of experience across residential, commercial, and industrial work. Whether it’s a complex site install or a quick call out, they show up on time, work safely, and deliver high standards - every time.
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