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, QLD 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.

Waterproofing

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.


Issues were never brought to me without a solution. The team was always available, responsive and nothing was too hard or a bother for them. They were fantastic to deal with.


PETER GEISSLER

Geicon Construction Management

CJ Duncan | Building Strong
2019-10-03T07:15:04+00:00

PETER GEISSLER

Geicon Construction Management

Issues were never brought to me without a solution. The team was always available, responsive and nothing was too hard or a bother for them. They were fantastic to deal with.

I have worked with CJ Duncan for many years and on various remedial projects. They are professional, friendly and focused on solving building problems. They have the right attitude to making sure that the work is fit for purpose and executed to a high level with care and skill.

Paul Ratcliff

General Manager | Building and Waterproofing Inspections

CJ Duncan | Building Strong
2020-09-08T11:23:49+00:00

Paul Ratcliff

General Manager | Building and Waterproofing Inspections

I just wanted to write a quick note to say thank you to you and your team for the completed works at Mantra on Kent. The team were very professional and completed the job on time are very happy with the final works.

I would like to call out the professionalism and expertise that was demonstrated consistently by CJ Duncan on our project to ensure the owners requirements were not only met but exceeded.

SHANE ALLEN

Owners Corporation Pavillions Glebe

CJ Duncan | Building Strong
2019-10-03T07:13:44+00:00

SHANE ALLEN

Owners Corporation Pavillions Glebe

I would like to call out the professionalism and expertise that was demonstrated consistently by CJ Duncan on our project to ensure the owners requirements were not only met but exceeded.

I worked closely with the CJ Duncan team on the rectification of the Zenix Residential Complex at Alexandria. It was delivered by a team with a positive attitude who always presented well, and managed themselves and their subcontractors professionally.

Danielle Hynard

Jackson Teece

CJ Duncan | Building Strong
2019-10-03T07:15:38+00:00

Danielle Hynard

Jackson Teece

"I worked closely with the CJ Duncan team on the rectification of the Zenix Residential Complex at Alexandria. It was delivered by a team with a positive attitude who always presented well, and managed themselves and their subcontractors professionally."

CJ Duncan's support and dedication was outstanding. The team repeatedly demonstrated their willingness to go out of their way to ensure they delivered the outcome required. The support on site was a stand-out point for CJ Duncan. They did a great job managing tradesmen, owners and tenants to ensure all works were completed to a high standard.

STEPHEN GILCHRIST

Masters Management Australia

CJ Duncan | Building Strong
2019-10-03T07:14:27+00:00

STEPHEN GILCHRIST

Masters Management Australia

The support on site was a stand-out point for CJ Duncan. They did a great job managing tradesmen, owners and tenants to ensure all works were completed to a high standard.

I just wanted to write a quick note to say thank you to you and your team for the completed works at Mantra on Kent. The team were very professional and completed the job on time are very happy with the final works.

Emma Soutter

Area General Manager - NSW | Mantra on Kent

CJ Duncan | Building Strong
2020-08-26T17:02:47+00:00

Emma Soutter

Area General Manager - NSW | Mantra on Kent

I just wanted to write a quick note to say thank you to you and your team for the completed works at Mantra on Kent. The team were very professional and completed the job on time are very happy with the final works.

Thank you very much for assisting us with not only replacing the combustible cladding from our building, but also your assistance with the complicated council sign off process. Additionally, thank you for your patience, help and support. You cannot possibly imagine the relief that this closure brings me and the owners group.

Darren Windus

OC Chairman, Marquis Apartments – Killara

CJ Duncan | Building Strong
2020-08-26T17:01:11+00:00

Darren Windus

OC Chairman, Marquis Apartments – Killara

Thank you very much for assisting us with not only replacing the combustible cladding from our building, but also your assistance with the complicated council sign off process. Additionally, thank you for your patience, help and support. You cannot possibly imagine the relief that this closure brings me and the owners group.
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CJ Duncan | Building Strong

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.