In many cases we need to sensitively manage complex construction activities around occupied residential strata buildings or commercial office space. We work closely with commercial property managers, strata managers, owner’s corporations, and Home Owners Warranty insurers across NSW and ACT.

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Remedial Building Services

All building, repairs & maintenance

From major structural repairs to subtle aesthetic restorations, trust CJ Duncan to complete your projects to the highest standards every time.

Facade restoration & upgrades

Maximise the street appeal of your property and increase its value with a high quality facade restoration.

Concrete repairs & protection

Proven concrete repairs using long-established treatment methods and special mortars to build out the repair. The distressed area will
look as good as new.

Structural repairs

Structural repairs require highly specialist skills and full-time project management to minimise disruption and comply with all relevant
design codes.


Every waterproofing project is unique, so we apply expert knowledge to assess, select and prepare the correct type of floor and wall membranes.

Home warranty claims

Working collaboratively to rectify defective workmanship with minimal fuss, we pay strict attention to every last detail to ensure owners and insurers are completely satisfied.

Fire safety orders / BCA compliance

Flexible, low-cost services to ensure compliance with relevant laws and insurance requirements in relation to safety, building and environmental codes.

What our
Clients Say
About Us

CJ Duncan prides itself in having long standing relationships with a number of clients, customers, consultants and architects, as well as skilled tradespeople and suppliers.

Remedial Projects