NSW complying development · Codes SEPP 2008

Know if your plans pass CDC before you lodge

Enter your lot and building dimensions and get a clause-by-clause check against the NSW Housing Code in seconds. Homeowners, builders and drafters fix problems early. Private certifiers get cleaner applications.

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Two-storey timber-framed house under construction with scaffolding — Housing Code max. building height: 8.5 m, 2 storeys.

45%

of all NSW planning approvals were complying development in 2024–25.

Source [1]

63%

of new houses, medium-density homes and granny flats were approved by CDC, not DA.

Source [1]

60+ days

added on average when missing a single standard pushes a project from CDC into a DA.

Source [1]

30,000+

complying development applications reviewed by NSW councils in 2021–22 alone.

Source [2]

One platform, both sides of the application

Built for the people who lodge, and the people who approve

A CDC is pass or fail. One standard out and the whole project drops into a development application. CDC Checker finds those standards before the certifier does.

Contemporary single-storey brick and glass house with a timber deck

Homeowners · builders · drafters

Design to the code from the first sketch

See every standard your lot triggersSetbacks, height and landscaping change with lot area and width. We work out which bands apply to your site.
Catch the 60-day mistake earlyA side setback that's 10 cm short can force a DA. Fix it on the drawing, not after lodgement.
Lodge a complete applicationA certifier's 10-day assessment clock only starts once every document is in. Turn up with a checked set.
Show your certifier the workingCopy a clause-referenced report straight into your email or brief.

Check my plans

Two-storey house wrapped in scaffolding in a new Australian housing estate

Registered private certifiers

Spend your hours on judgement, not arithmetic

Instant numeric pre-assessmentHeight, primary, side and rear setbacks and landscaped area, with the formula shown for every result.
Clause references on every lineEach result cites the Codes SEPP clause, so you can go straight to the provision.
Better applications arrivingSend clients the link before they lodge. Fewer requests for information, fewer redesigns.
Nothing to install, nothing to sign up forOpen it in the browser on site or in the office. Your data stays on your device.

Check an application

How it works

Three steps, under a minute

Step 1

Enter your lot

Lot area and width at the building line. These two numbers decide which Housing Code bands apply.

Step 2

Enter your design

Building height, storeys, setbacks to each boundary and landscaped area, read straight off your site plan and elevations.

Step 3

Get the clause-by-clause result

Pass or fail for each standard, the required figure, your figure and the clause. Copy the report for your certifier or client.

Start now · no account needed

Housing Code quick check

For a new dwelling house or two-storey addition under Part 3 of the Codes SEPP. Results update as you type.

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Standard	Required	Yours	Result

Not yet checked: privacy, built-to-boundary walls, floor area, excavation and land exclusions.

Coverage

Every residential code in the Codes SEPP

We are starting with the code most homes are built under, then adding the rest.

Part 3

Housing Code

New houses, two-storey additions, garages and sheds on lots of 200 m² and up.

Live

Part 3B

Low Rise Housing Diversity Code

Dual occupancies, manor houses and terraces.

Part 3C

Greenfield Housing Code

New homes in greenfield release areas.

Part 3A

Rural Housing Code

Dwellings on rural and large lots.

Planned

Part 3D

Inland Code

Housing across regional and inland NSW.

Planned

Part 4

Housing Alterations Code

Internal alterations and minor external works.

Planned

Street of new two-storey brick and render homes in an Australian estate

Why it's different

Open it and use it

Most planning compliance platforms are sold to councils and large developers, and start with "book a demo". CDC Checker is for the person holding the plans today.

The usual wayCDC Checker

Book a demo, wait for a callStart checking straight away

Create an account firstNo account, no email

Priced for councils and enterprisesFree for homeowners and certifiers

Find the problem after lodgementFind it while it's still a line on a drawing

3–4

Coming to the Codes SEPP

Close to compliant may soon be close enough

The NSW Government exhibited a proposed CDC variation pathway from 14 May to 24 June 2026. It would let councils approve up to 3–4 variations to standards such as height, setbacks and privacy screens, decided within 10 days when referred by a private certifier. CDC Checker will flag which of your failures could qualify as soon as the rules are final. [1] [3]

Check your plans before your certifier does

Start now