Private Building Certification Specialists servicing residential developments throughout NSW.
Expert Certification.
Every Step.
From first lodgement to final certificate, one accredited team carries your project through every statutory gate.
Experience You Can Trust
- 90% Repeat Clients
- Fast Turnaround
- Experienced Certifiers
- Residential Specialists
- Direct Access To Decision Makers
Simple. Transparent. Efficient.
Five clear stages. One point of contact. You always know exactly where your project sits.
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01
Submit Plans
Upload your drawings and documents through the client portal.
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02
Assessment
Rapid compliance review against the NCC and planning controls.
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03
Approval
Your certificate is issued and registered on the NSW Planning Portal.
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04
Inspections
Mandatory critical-stage inspections booked around your build schedule.
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05
Occupation Certificate
Final sign-off. Your project is approved for occupation.
Your Project. Live. 24/7.
Our secure client portal lets you track approvals, book inspections and download certificates the moment they are issued. To register, email our office with your project details and we'll set up your access.
- Upload plans & documents securely
- Track project progress in real time
- Book critical-stage inspections
- Download certificates instantly
- View outstanding requests at a glance
| File | Record Type | Title | Type | Status |
|---|---|---|---|---|
| 260118 | Application Opened | 14 Rowe Street, Eastwood | CDC & OC | Open |
| CDC-118204 | Active Project | 7 Hampden Road, Lakemba | CDC & OC | Assessment in Progress |
| CDC-22861 | Active Project | 203 Woodville Road, Merrylands | CDC & OC | Open |
Ready To Start Your Project?
Get expert certification advice today.
Certification Services
Accredited private certification for residential development across NSW, with clear advice, statutory rigour and turnaround times that keep your project moving.
Not Sure Which Approval You Need?
Send us your plans and we'll map the fastest compliant pathway.
The Keystone Story
The keystone is the one stone that locks every other stone in place. That is the role we play on your project.
Built On Rigour.
Run On Relationships.
Keystone Building Certifiers is an independent, NSW-accredited private certification practice specialising in residential certification for new homes, duplexes, secondary dwellings, swimming pools, and major alterations and additions.
Founded by experienced certifiers who saw too many quality projects delayed by slow processes and poor communication, Keystone was built around a simple principle: deliver rigorous certification without unnecessary bureaucracy.
Our clients deal directly with the registered certifier responsible for their project, receiving practical advice, timely decisions and clear communication from start to finish. Today, more than 90% of our work comes from repeat clients and referrals, a reflection of the trust we've built with builders, developers and homeowners across NSW.
What We Stand For
Integrity First
We certify what complies, and explain clearly what doesn't, with a pathway to fix it.
Speed With Care
Fast turnaround should never mean shortcuts. Our processes deliver both.
Direct Access
You speak with the registered certifier on your job. Every time.
Accountability
Clear documentation, transparent decisions and a full audit trail on every certificate.
Registered. Experienced. Approachable.
George Chidiac
Director, Registered Certifier BDC2729Restricted Class 1 and 10 buildings.
Arthur Dassakis
Director, Registered Certifier BDC2147Restricted Class 1 and 10 buildings.
Work With A Team That Answers The Phone
Talk directly to a registered certifier today.
Resources & Forms
Download the forms you need to get started with Keystone Building Certifiers.
Request A Quote
Tell us about your project. Most quotes are returned within one business day. Already building? Request an inspection instead.
Request a Quote Online
Our quote requests are now handled through our online portal. Click below to submit your project details and we'll get back to you, with most quotes returned within one business day.
Request a QuoteOpens our secure quote portal in a new tab.
Contact Details
- 0422 234 257
- info@thecertifiers.com.au
- 5, 31 Maclaurin Avenue
East Hills NSW 2213 - Mon–Fri 9:00am – 5:00pm
Request an Inspection
Book a critical-stage inspection for your project. All fields are required.
Inspections Team
- 0422 234 257
- inspections@thecertifiers.com.au
- Mon–Fri 9:00am – 5:00pm
Before You Book
Have your project address and the relevant construction stage ready. Remember the statutory 48-hour minimum notice when choosing your preferred date. Requests inside that window may need to be rescheduled.
Access the Keystone Client Portal
Every Keystone client gets secure portal access to track approvals, book inspections and download certificates the moment they are issued.
- Upload plans & documents securely
- Track project progress in real time
- Book critical-stage inspections
- Download certificates instantly
- View outstanding requests at a glance
Not registered yet? Email us at info@thecertifiers.com.au with your project details and we'll set up your access.