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We provide remedial building and construction services across South Sydney and the Illawarra region, including suburbs such as Wollongong, Bulli, Oak Flats, Woonona, and surrounding areas. Our team is available for both strata-managed buildings, commercial properties, and residential homes needing professional repair or refurbishment.

Waterproofing is one of the most common issues we address. At MJ Reilly Constructions, we use negative membranes, balcony membranes, and wet area systems to stop water ingress in apartments, townhouses, and homes. Our waterproofing services cover balconies, bathrooms, basements, planter boxes, and podiums — all designed to withstand the Illawarra and South Sydney climate

Yes. Our team is experienced in façade restoration, protective coatings, cladding replacement, and external rendering. Whether it’s a strata apartment block in South Sydney or a coastal property in the Illawarra, we provide durable solutions that enhance both safety and appearance while ensuring compliance with current regulations.

Absolutely. We regularly partner with strata managers, remedial engineers, consultants, and owner corporations. Our role is to deliver clear communication, technical expertise, and compliant project outcomes for multi-unit strata complexes and commercial properties. From inspections to full remediation, we ensure minimal disruption for residents and tenants.

Concrete spalling (often called concrete cancer) shows as cracks, flaking, or rust stains on walls, soffits, and balconies. This is common in coastal areas like Wollongong, Bulli, and South Sydney, where salt and moisture accelerate steel reinforcement corrosion. If you notice these signs, our team can inspect and provide cost-effective concrete remediation to restore structural integrity before the damage spreads.