Registered Design Practitioner for Class 2 Remedial Works | Sydney NSW
Why Strata Managers Need a Registered Design Practitioner for Class 2 Remedial Works in NSW
If you are a strata manager, owners corporation, building manager or strata committee planning remedial works on an apartment building in Sydney or anywhere throughout NSW, understanding the requirements of the Design and Building Practitioners Act (DBP Act) is essential.
Many strata projects that appear to be straightforward maintenance works can legally require Declared Designs prepared by a Registered Design Practitioner before construction can commence.
Failure to comply may delay projects, affect approvals, create insurance complications and expose the Owners Corporation to unnecessary risk.
This article explains when a Registered Design Practitioner is required, the types of remedial works commonly affected, and how Y.G. Architects assists strata managers across NSW.
What is a Registered Design Practitioner?
A Registered Design Practitioner is a professional registered under the Design and Building Practitioners Act 2020 (NSW) who is authorised to prepare Regulated Designs and provide Design Compliance Declarations for regulated building work.
For many Class 2 apartment buildings, remedial work involving building elements cannot proceed until compliant declared designs have been prepared and lodged through the NSW Planning Portal by the registered building practitioner.
What is a Class 2 Building?
Class 2 buildings include most residential apartment buildings throughout Sydney and NSW.
This includes:
Residential apartment buildings
Residential strata developments
Mixed-use buildings containing residential apartments
Multi-storey residential developments
If your Owners Corporation manages one of these buildings, there is a good chance the DBP legislation applies to many remedial projects.
Typical Remedial Works Requiring Declared Designs
Many strata managers are surprised that remedial projects—not just new buildings—can require a Registered Design Practitioner.
Typical examples include:
Balcony Waterproofing Replacement
One of the most common remedial projects throughout Sydney.
Typical works include:
Removal of existing tiles
Removal of failed waterproof membrane
New falls to drainage
New waterproofing system
New screed
New tiles or pedestal pavers
Door threshold detailing
Drainage modifications
Balcony waterproofing often affects regulated building elements and may require declared designs depending on the scope of work.
Rooftop Waterproofing Remediation
Common works include:
Replacement of membrane systems
Torch-on membranes
Liquid applied membranes
Trafficable roof systems
Green roof upgrades
Roof drainage modifications
Skylight waterproofing
Parapet waterproofing
Plant room waterproofing
Podium Deck Waterproofing
Large strata developments frequently require remediation of:
Podium slabs
Courtyards
Landscaped podiums
Planter box waterproofing
Vehicle ramps
Accessible pathways
Concrete Cancer Repairs
Including:
Concrete spalling
Corroded reinforcement
Structural repairs
Protective coating systems
Façade Remediation
Including:
External wall repairs
Render replacement
Façade waterproofing
Expansion joint replacement
Masonry repairs
Window flashing replacement
External Cladding Replacement
Where building envelopes are modified, declared designs are commonly required.
Roof Replacement
Examples include:
Tile roof replacement
Metal roof replacement
Roof insulation upgrades
Roof drainage modifications
Fire Safety Upgrades
Examples include:
Passive fire protection
Fire-rated walls
Fire doors
Fire penetrations
Fire stopping systems
Building Envelope Remediation
This may include:
Water ingress investigations
Flashing replacement
Waterproof junctions
Window waterproofing
Balcony door threshold redesign
Does Exempt Development Mean a Design Practitioner Is Not Required?
Not necessarily.
This is one of the most misunderstood parts of the legislation.
Some work may qualify as exempt development under planning legislation while still requiring compliance with the Design and Building Practitioners legislation.
Waterproofing is a common example where additional consideration is required, and it is not automatically excluded simply because the work is exempt development.
How the Process Typically Works
For most Class 2 remedial projects the process generally includes:
Site inspection
Existing condition investigation
Preparation of regulated construction drawings
Coordination with structural, hydraulic or waterproofing consultants where required
Design Compliance Declaration
Declared Design package
Lodgement through the NSW Planning Portal by the registered building practitioner
Construction
Variation declarations (if required)
Project completion
Early engagement of a Registered Design Practitioner helps reduce delays during construction and assists builders in obtaining the documentation needed before work begins.
Why Strata Managers Should Engage a Design Practitioner Early
One of the most common causes of project delays is appointing a Registered Design Practitioner after the contractor has already been selected.
Early involvement allows:
Review of the proposed scope
Identification of regulated building elements
Coordination with consultants
Better tender documentation
Reduced construction variations
Improved cost certainty
Faster approval process
Our Experience in Class 2 Remedial Projects
Y.G. Architects has extensive experience delivering Design Practitioner services for Class 2 remedial projects throughout Sydney and NSW.
Our experience includes:
Apartment waterproofing remediation
Balcony replacement projects
Roof waterproofing
Podium waterproofing
Façade remediation
Building envelope repairs
Government housing upgrades
Owners Corporation remedial projects
Social housing remediation
Heritage apartment buildings
Declared Designs under the DBP Act
Principal Design Practitioner services
NSW Planning Portal documentation
We regularly coordinate with:
Strata managers
Owners Corporations
Building managers
Waterproofing contractors
Structural engineers
Hydraulic engineers
Certifiers
Project managers
Registered Building Practitioners
Servicing Sydney and NSW
We provide Registered Design Practitioner services throughout:
Sydney CBD
North Sydney
Eastern Suburbs
Inner West
Northern Beaches
Sutherland Shire
Hills District
Parramatta
Western Sydney
Newcastle
Wollongong
Central Coast
Regional NSW
Many projects can be undertaken using existing drawings, surveys or LiDAR capture, allowing efficient delivery throughout New South Wales.
Need a Registered Design Practitioner?
If your Owners Corporation, strata manager or project manager is planning remedial works on a Class 2 building, we can advise whether your project requires Declared Designs under the Design and Building Practitioners legislation.
We provide:
Design Practitioner services
Principal Design Practitioner services
Declared Designs
Design Compliance Declarations
Waterproofing remedial design
Architectural regulated designs
NSW Planning Portal documentation
Coordination with consultants and builders
Whether your project involves balcony waterproofing, roof replacement, façade remediation or broader building envelope repairs, engaging a Registered Design Practitioner early can help ensure your project proceeds smoothly and complies with NSW legislation.
Contact Y.G. Architects to discuss your Class 2 remedial project anywhere in Sydney or NSW.