You're building it. We'll make sure it's legal.

Owner builder stage inspections - same day response, no contractor markup.

Get a Free Quote0421 936 489

"We owner-built our dream home but could not get it signed off - three different certifiers said different things. No1 gave us a clear compliance checklist on day one and saw us through to OC."

Owner builders in NSW must meet the same NCC compliance standards as registered builders - and every critical stage must be inspected by a certifier before the next stage begins.

  • CDC or CC issued on the same timeline as registered builder projects
  • All 5 critical stage inspections available with direct-to-certifier booking
  • OC issued on completion - required before any sale or insurance claim

Eligibility Check

Are you eligible to proceed as an owner builder?

Select all that apply to your project.

Tick each criterion that applies to your project

Your project likely qualifies for a fast CDC.

No council. No delays.

Get your free quote

You missed a few requirements.

Based on your selection, your project might require an alternative approval pathway (like a DA). You are missing:

  • NSW Owner Builder Permit issued by NSW Fair Trading (required for work over $10,000)
  • The project is Class 1 or Class 10 (single dwellings, garages, outbuildings)
  • Architectural drawings and engineering reports are prepared by qualified professionals
  • BASIX certificate is obtained before CDC/CC submission

Don't worry, we've got you.

Our experts can counsel you on alternative pathways and guide you through the process. Call us immediately for a free consultation.

Call 0421 936 489

Owner builder.
Certification from start to finish.

We support owner builders through every certificate and inspection stage.

  1. Pre-Build

    CDC or CC Issued

    Submit your owner builder plans and engineering reports - we review and issue the certificate.

  2. Stage 1

    Pre-Slab Inspection

    Steel, formwork, and drainage inspected before any concrete is poured.

  3. Stage 2

    Frame Inspection

    Structural timber or steel frame reviewed against approved drawings.

  4. Stage 3

    Waterproofing & Insulation

    Wet area waterproofing and wall/ceiling insulation inspected before lining.

  5. Stage 4

    Final Inspection

    Full on-site review of all completed work against the approved plans.

  6. Completion

    Occupation Certificate

    OC issued. Building legally habitable - required before sale or lease.

Have a question about the process? Call us - we're happy to walk you through it.

Scope of Works

Dedicated Builder Services

Priority certification and reliable stage inspections designed to keep your construction programme moving.

CDC & CC Approvals

Fast, accurate processing of Complying Development and Construction Certificates.

Volume batch-processing available
Approvals typically in 10–15 business days
Clear, itemised documentation checklists
Direct access to a senior assessing certifier
Independent expert assessmentGet a quote
CDC & CC Approvals

Ready to get started?

Get a fast-tracked quote from a licensed NSW certifier. Most clients hear back within 2 hours.

Request a Quote

Select your project type

See the exact documents needed. No guesswork, no endless lists.

NSW Owner Builder Permit

Issued by NSW Fair Trading - required for works over $10,000

Architectural Drawings

Floor plans, elevations, and sections - from a qualified draftsperson

Structural Engineering

Certified by a practising engineer

BASIX Certificate

Mandatory energy efficiency certificate

Survey Plan

Showing lot boundaries and levels

Hydraulic Plan

Stormwater and drainage management

Missing something? Don't worry — we can help source it.

Start your application

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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Owner builder certification - answered.

Yes - all owner builder projects in NSW require stage inspections by a licensed certifier, and an Occupation Certificate at completion. You cannot self-certify.

An Owner Builder Permit from NSW Fair Trading is required for any work over $10,000. You must also hold a White Card (construction induction) and, for certain work, relevant trade qualifications.

The standard critical stages are: pre-slab, frame, waterproofing/insulation, and final. Some projects may require additional stages depending on the design.

Yes - but you must have an Occupation Certificate, and owner-built homes sold within 7 years of completion require a statutory warranty period disclosure. We can advise on the OC process.

Get in touch

Request a quote

We'll review your project details and get back to you within 24 hours.

Building certifier inspecting blueprints

Unrestricted certifiers

Your project is reviewed directly by NSW-accredited certifiers - no middlemen.