Duplex CDC NSW: Complying Development Advice for Eligible Dual Occupancy Sites
A Complying Development Certificate is the fast lane: where your site meets every standard, planning and construction approval come together in a single certificate, issued in as little as around 20 days by council or an accredited certifier. The catch is that it's all-or-nothing, so eligibility has to be checked properly first.
Mon–Fri 8:30am–5:30pm · We call back within one business day.
How CDC works
CDC combines planning and construction approval into one certificate under the relevant state code. It's fast and certain, but only available when the site and design meet every applicable standard. Miss one and you're not eligible, which is why an honest eligibility review up front saves time and money.
Eligibility checklist we work through
Zoning and dual occupancy permissibility (typically R2/R3).
Minimum lot size (commonly 450m²) and frontage (commonly 12m).
Heritage, items and conservation areas are excluded.
Flood and bushfire status.
Setbacks, FSR, height, private open space and parking.
Whether the lot is battle-axe (excluded from the Code).
Your subdivision objective.
When CDC isn't the answer
If your site falls short on any standard, we don't force it, we design to a DA where merit assessment can still deliver a great outcome. Often that's the smarter route than chasing a marginal CDC.
Questions about cdc complying development
Determination can be as quick as around 20 days once the documentation is complete, but design and documentation take time before that clock starts. It's the fastest pathway when a site genuinely qualifies.
No, battle-axe lots and heritage items/conservation areas are excluded from the Low Rise Housing Diversity Code. Those sites route to a DA, which we handle regularly.
Think your block qualifies for CDC? Let's check.
Send your address, survey or council letter, or just call. We'll give you a preliminary read on what's possible.
