Commercial Construction.
SGB carries out commercial construction and maintenance work, including seismic strengthening, difficult sites and facade remediation, for government, local council, body corporate and commercial clients. We love complex projects that need detailed project management and seamless co-ordination of sub-trades. We are Licensed Building Practitioners, Tōtika prequalified and SiteWise Gold 2026/27, so we come prequalified for council, government and head contractor work.
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Water enters a building long before anyone sees it, and the damage is usually worse than the report predicted. At SGB we can remediate these issues:
Weathertightness investigation, moisture testing and invasive inspections
Leaky building and leaky home remediation
Full and targeted recladding: monolithic, plaster, weatherboard, fibre cement
Drained and vented cavity systems
Deck substrates, waterproof membranes and balcony remediation
Membrane and metal roof replacement
Window and door replacement, head and sill flashings
Structural timber repair and framing replacement
Encapsulated scaffold for year round work
Apartment and body corporate building remediation
Remedial architectural design and building consent through to Code Compliance
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Most strengthening work happens in buildings that are still being used, so the programme matters as much as the structure and design.
Earthquake strengthening to an engineer's design
%NBS upgrades for earthquake prone buildings
Strengthening work arising from a Detailed Seismic Assessment
Structural steel framing and portal frame installation
Concrete shear walls, core drilling and epoxy anchoring
Foundation underpinning and new concrete footings
Floor and roof diaphragm strengthening
Unreinforced masonry securing, parapet and chimney bracing
Facade and veneer tie fixings
Heritage building strengthening
Staged programmes in occupied and tenanted buildings
Making good to linings and finishes after structural work
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SGB has extensive experience carrying out government work.
Local Council and government property maintenance and upgrades
School and early learning centre building work
Coucil community halls, pavilions and public facilities
Changing rooms, public toilets and amenity upgrades
Asbestos management and licensed removal coordination
Site security and public separation on occupied sites
Heritage and listed building work
Tōtika prequalified, SiteWise Gold, Licensed Building Practitioners
Health and safety documentation and site reporting
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On a difficult site, most of the cost and the risk sits in getting to the work rather than in the work itself. Logistics management can ensure projects are delivered smoothly.
Steep site and hillside construction
Restricted and difficult access sites
Island and offshore project delivery
Barge, boat and helicopter logistics
Biosecurity controlled sites and quarantine procedures
Site establishment and temporary works
Scaffolding and access on steep terrain
Craneage and materials handling on constrained sites
Piled foundations and retaining structures
Remote and coastal building projects
Demolition on restricted access sites
Helicopter only access sites
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We can maintain commercial buildings and body corporate properties, from the planned programme through to the repairs.
Planned and reactive building maintenance
Body corporate maintenance contracts
Long term maintenance plan costing and delivery
Apartment and multi unit residential maintenance
Commercial property and portfolio maintenance
Leak investigation and repair
Roof, gutter and downpipe maintenance
Carpentry repairs and making good
Interior and exterior repaint programmes
Tenancy fitout alterations and make good
Remedial work arising from building warrant of fitness inspections
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We take emergency and make safe work for insurers and property managers. We respond to building damage at short notice, secure the building first and document the damage as we go.
Emergency make safe and building securing
Temporary weatherproofing, propping and shoring
Storm, wind and flood damage repairs
Fire and smoke damage reinstatement
Water damage and burst pipe repairs
Impact and vehicle damage repairs
Earthquake damage reinstatement
Emergency strip out and drying
Damage documentation and scope of works for claims
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Structural work often gets found rather than planned, usually once something else has been opened up. SGB can move quickly to fix:
Rotten and decayed framing replacement
Bearer, joist and pile replacement
Subfloor repairs and re-levelling
Foundation repairs and underpinning
Beam, lintel and post replacement
Load bearing wall removal and structural alterations
Floor levelling and subsidence repair
Borer and decay damaged timber replacement
Retaining wall repair and replacement
Concrete work
Structural repairs to an engineer's design
Building consent for structural work