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COS Constructions specialises in home extensions, kitchen renovations, bathroom renovations, laundry renovations, fit-outs, decking, pergolas, and general residential construction projects.

Absolutely. COS Constructions is fully licensed and insured, giving homeowners peace of mind that their project is being completed professionally and in accordance with industry standards.

Every project is different. Timelines depend on the size and complexity of the work, but we provide a clear schedule upfront and keep you informed throughout the process.

Yes. We work closely with homeowners during the planning stage to ensure every project is functional, practical, and tailored to their vision and lifestyle.

Some projects may require council approval, while others may not. We can guide you through the process and advise you on any approvals required for your renovation or extension.

In many cases, yes. Depending on the scope of work, we can often complete renovations while homeowners remain in the property. We’ll discuss this with you before construction begins.

COS Constructions services homeowners across Sydney and surrounding areas. Contact our team to confirm if we service your location.

The cost depends on factors such as project size, materials, finishes, and complexity. We provide detailed, transparent quotes with no hidden surprises.

We combine quality craftsmanship, clear communication, reliable project management, and attention to detail to deliver exceptional results that add value to your home.

Yes. We stand behind the quality of our workmanship and provide warranties in accordance with Australian building standards and applicable regulations.