Class 2 - Residential
High-Rise Residential Towers
Approvals typically in ~35 days
A certifier who shows up on time, every time.
"Certification delays and no-show inspectors kill your margin and damage client relationships. We treat your programme with total professionalism. We provide the certainty you need to move forward."
Compliance assurance,
at every build stage.
Professional certifications for townhouses, duplexes, and multi-unit complexes.
Pre-Construction
Fast Approval Before You Break Ground
We assess your plans, issue your Construction Certificate or CDC, and confirm your inspection schedule — all before your first subcontractor arrives on site.
Active Construction
On-Time Inspections at Every Stage
Your certifier conducts all mandatory inspections with just 24–48 hours' notice, with reports issued the same day.
Completion
A Smooth Handover for Your Clients
We complete the final inspection and issue your Occupation Certificate. If your project includes a pool, we certify the barrier at the same time.
Have a question about the process? Call us - we're happy to walk you through it.
What actually happens, and what you need to do
Your effort is minimal. Ours is total.
SEND YOUR PLANS
You:
Submit architectural plans and engineering documentation via email or the agreed document-sharing channel.
We:
Conduct a code assessment and issue a fixed-fee proposal within 24 hours.
WE ISSUE APPROVAL
You:
Provide finalised documentation package.
We:
Lodge and process your CDC or Construction Certificate. Provide your confirmed inspection schedule.
CONSTRUCTION PROCEEDS
You:
Focus on site delivery.
We:
Attend all mandatory stage inspections on schedule. Issue written reports the same day. Escalate any compliance issues directly to you — no surprises.
PRACTICAL COMPLETION
You:
Prepare your client for handover.
We:
Conduct the final inspection and issue the Occupation Certificate, co-ordinating with you on any outstanding items.
Ready to partner with No1?
Get a fast-tracked quote from a licensed NSW certifier. We're ready to review your next project.
Select your project type
See the exact documents needed. No guesswork, no endless lists.
Development Consent (DA Approval)
Issued by the local council
Detailed Architectural Plans
Consistent with the DA-approved drawings
Structural Engineering Plans
Certified by a registered structural engineer
BASIX Certificate
Energy and water efficiency certificate
Evidence of Home Building Compensation (HBC) Cover
required under the applicable residential building and insurance legislation
Relevant approval
Relevant water-authority approval, building-plan approval or asset-clearance evidence, where applicable
Missing something? Don't worry — we can help source it.
Start your applicationUnrestricted Authority
Our Certification Capabilities
Projects we have certified.
Class 7b & 8 - Industrial
Industrial Warehousing & Logistics
Approvals typically in ~20 days
Specialist Building Inspection
Roof Framing & Structural Defect Audit
50+ page report in 24 hours
Water Leak & Damp Inspection
Subfloor Moisture & Water Ingress Detection
Non-destructive thermal scanning
Dilapidation & Structural Audit
Masonry Cracking & Settlement Assessment
Legal third-party sign-off
Class 1 & 2 - Residential
Custom Luxury Homes & Duplexes
CDCs typically in ~14 days
Class 5 & 6 - Commercial
Medical Centres & Commercial Fitouts
CDCs typically in ~10 days
Class 10b - Residential
Swimming Pools & Minor Structures
CDCs typically in ~5 days
Where We Provide This Service
No.1 Building Services provides fast, unrestricted certification across the following regions. Explore our interactive coverage map.
South West SydneyGreater Western & North West SydneyCity & Inner WestParramatta & Central WestNorthern Beaches & North ShoreEastern SuburbsSt George & Sutherland ShireNewcastle & The Lower Hunter
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Frequently Asked Questions
We request 24 to 48 hours notice for all stage inspections. For partner builders, we accommodate urgent next-day requests wherever possible.
Yes. We assign a primary certifier to each builder partnership, ensuring consistency and a strong working knowledge of your construction standards.
We assess the variation against the NCC and the approved CDC or DA consent. Where compliant alternatives exist, we advise you of the path forward on the same day - minimising any construction hold-up.
Yes. We process significant volumes of duplex CDCs and DA-approved CCs each year. Our team has extensive experience with the SEPP Codes 2008 requirements for dual occupancy development.
Yes. Partner builders receive priority scheduling, direct certifier access, and preferred fee arrangements. Contact us to discuss the programme. [CLIENT TO CONFIRM details]
Get in touch
Request a quote
We'll review your project details and get back to you within 24 hours.
Unrestricted certifiers
Your project is reviewed directly by NSW-accredited certifiers - no middlemen.