Demolition & Decommissioning

Safe, efficient and innovative demolition and decommissioning services.

McMahon Services operates the largest privately-owned industrial demolition fleet in the Southern Hemisphere. Our demolition services team have delivered over 3,000 demolition and decommissioning projects averaging 95% recycling of materials, and are recognised as one of the world’s top 20 demolition companies.

Industrial, Commercial and Residential Demolition Services

For three decades McMahon Services has been a leading provider of demolition services, and decommissioning services. Internationally we are recognised as one of the world’s top twenty demolition companies.

Our team of demolition contractors’ expertise covers all markets from small residential demolitions with around 100m³ of materials moved to the largest industrial demolition projects moving 100,000m³ or more of material including steel, concrete, bricks, timber, asbestos and other hazardous waste, vegetation, soils, and everything in between.

We have demolished and decommissioned industrial and commercial infrastructure in some of the toughest conditions including remote locations, isolated islands, geographically disperse worksites, extreme climatic conditions and in restricted access urban environments.

New Zealand Demolition and Decommissioning

Our demolition contractors’ expertise includes asbestos demolition, fuel storage tanks, multi-level buildings, substations, electrical transformers, rail, sleeper and ballast, ship loaders, primary crushers, conveyor belts, commercial and industrial buildings, defence facilities, airside and non-airside airport works, port and marine facilities, sporting stadiums, bridges, naval vessels and chimney stacks.

We have New Zealand demolition and asbestos removal licences, are proficient in working within the requirements of WorkSafe New Zealand and the Environmental Protection Authority. Many of our projects include provisions of material recycling and reuse, where we have achieved recycling targets of up to 98% on many sites, and an average of 95% across all projects.

We provide industrial demolition services and commercial demolition services across Auckland, Christchurch, and New Zealand wide.

Our Demolition Services Capability

  • Demolition and decommissioning of obsolete industrial and commercial sites.
  • Multi-level and high-rise demolition.
  • Internal demolition, refurbishment and structural modifications.
  • Explosive charge felling solutions.
  • Housing and residential demolition.
  • Vessel dismantles and disposal.
  • Emergency response demolition.
  • Mine site decommissioning.
  • Total or partial demolition of buildings and structures erected by tilt-up construction.
  • Heritage works and partial demolition of buildings and structures, including the removal of brittle or fragile roof material.
  • High-risk crane and rigging deconstruction projects.
  • Engineered structural modifications and propping.
  • Recycling and resource recovery.
  • Dust, debris, noise, odour and vibration monitoring and control.
  • Removal, decontamination and remediation of hazardous materials including asbestos, lead, mercury, polychlorinated biphenyls (PCBs) and radioactive material.

Deconstruction of Pt Augusta Power Station site

McMahon Hero Shot


McMahon Services has been recognised internationally for our outstanding performance in the demolition and recycling industries.

We have been acknowledged in the Demolition and Recycling International publication’s Top 100 listing of the world’s largest demolition contractors for the last six years.


  • 2018: Position 17
  • 2017: Position 15
  • 2016: Position 20
  • 2015: Position 14
  • 2014: Position 11
  • 2013: Position 10
  • 2012: Position 6
  • 2011: Position 14
  • 2010: Position 17
  • 2009: Position 21
  • 2008: Position 20
  • 2007: Position 19
  • 2006: Position 18
  • 2005: Position 18
Do you have an upcoming demolition project? Contact the expert team at McMahon Services to assist you with your estimating and project delivery requirements.
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Lubes Terminal Demolition – Stage 1
  • Asbestos & Hazardous Waste Management
  • Demolition & Decommissioning
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Adelaide Oval Redevelopment
  • Asbestos & Hazardous Waste Management
  • Demolition & Decommissioning
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PC1250 Ultra High Reach Demolition Excavator

Model: PC1250
Type: Excavator
Capacity / Size: 125 tonne
Manufacturer: Komatsu

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Explosive milestone for the Augusta Power Station Decommissioning project

On Friday 9th September the Playford A stack was planned for demolition, reaching the first major milestone in the two yea...

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