Most homeowners assume that anything inside the four external walls of their property doesn't need council approval. That's broadly true - but only broadly. Get it wrong and you can end up with a stop-work order, an unapproved renovation that won't pass on resale, or a fight with your neighbours that drags through Land and Environment Court.
The three approval pathways in NSW
Exempt development
Minor works that don't require any council approval at all. Most internal cosmetic strip outs - replacing a kitchen, redoing a bathroom, removing carpet, swapping out cabinetry - fall under exempt development as long as you're not touching structural elements, not changing the building footprint, and not affecting heritage features.
Complying development
Larger works that meet pre-set development standards. A complying development certificate (CDC) can be issued by a private certifier or council in around 20 business days. Most full home strip outs combined with renovations sit here.
Development application (DA)
The full council assessment pathway. Required where the work doesn't fit either of the two simpler categories. Heritage homes, conservation areas, structural changes affecting the building footprint, or multi-unit dwellings often end up here. Timeframes vary by council but realistic expectations are eight to sixteen weeks.
When an internal strip out triggers approval requirements
Removal of any load-bearing wall - always requires structural certification, often DA
Heritage-listed properties or homes in heritage conservation areas across Paddington, Glebe, Balmain, Newtown, and similar suburbs
Strata properties where strip out work affects common property
Properties with bushfire, flood, or acid sulfate soil overlays
Asbestos removal over certain quantities (separately notifiable to SafeWork NSW)
Changes to the use of a room (for example, converting a garage into living space)
Where Sydney homeowners get caught out
The most common mistake is assuming that if a wall isn't an external wall, it must be safe to remove. Plenty of internal walls in older Sydney homes - especially terraces and post-war brick veneer - are load-bearing or contain structural bracing elements. Removing them without engineering sign-off can create real structural problems and an insurance liability the homeowner ends up wearing.
The second common mistake is heritage. A surprising number of Sydney homes are in heritage conservation areas without the owner realising it. Inner West suburbs, Eastern Suburbs near the harbour, and parts of the North Shore all have extensive conservation overlays. Even internal strip out work can be restricted if original features need to be retained.
How a competent strip out company handles approvals
Confirms the property's planning status with council before any work starts
Identifies any heritage, strata, or environmental overlays affecting the work
Coordinates with the structural engineer where any wall removal is involved
Notifies SafeWork NSW for any licensed asbestos removal
Documents existing conditions before disturbance
Practical advice
Before you book a strip out, get clear on which approval pathway applies to your project. Your builder, architect, or private certifier should be able to confirm in a single meeting. If you're working without those professionals, your council's planning portal will tell you the property's planning controls. Five minutes of research can save you a six-figure compliance problem.