The Complete Timeline for Renovating
a Home in the Illawarra

This phase is often undervalued because it doesn't feel like 'real' progress: no drawings, no approvals, nothing tangible. But the decisions made here — or deferred here — shape everything downstream. This is the time to establish your budget seriously (not optimistically), check your site's planning constraints, understand whether a DA or Complying Development is the right pathway, and decide what type of designer you need. Homeowners who rush through this phase to get to design typically spend twice as long in the design phase because the brief keeps changing.

Your designer works through concept design, then developed design, then the detailed design needed for DA lodgement. This phase involves multiple meetings, revisions, and decisions on layout, external appearance, materials, and internal configuration. The pace is largely determined by the client. Designers can only move as fast as decisions are made. If you take three weeks to respond to a design revision, the design programme extends by three weeks.

Preparing a DA package involves more than architectural drawings. A typical WCC DA requires: a Statement of Environmental Effects, a BASIX certificate, a survey plan, shadow diagrams, a landscape plan, and often specialist reports (bushfire, acoustic, geotechnical, traffic) depending on the site and project type. Coordinating all these consultants simultaneously is the designer's job, but delays in any one report hold up the whole package.

Once your DA is lodged, it enters WCC's assessment queue. The Wollongong LGA has historically had a 40–90 day median determination time for residential DAs, but complex or contentious applications take longer. DAs that attract neighbour objections, require referral to NSW Coastal Council or other agencies, or involve heritage assessment can take six months or more. During this time, WCC may issue requests for additional information (RAIs), asking for clarification or additional documentation.

DA approval covers design intent. You need a second set of documentation — construction drawings and specifications — for builders to price and for your certifier to approve a Construction Certificate. Once construction documentation is complete, the tender process begins. A properly run tender — sending consistent documents to four to six builders, allowing two to three weeks to price, then analysing the quotes — takes six to ten weeks. Rushed tenders produce incomparable quotes and often require a second round.

Construction duration depends heavily on project scale, site complexity, and builder capacity. A single-storey extension might complete in five months. A double-storey addition typically takes eight to twelve months. A full new build takes twelve to eighteen months minimum. Weather delays are real in the Illawarra. The escarpment and coastal environment means more wet weather interruptions than inland NSW. Trade availability is tight across the region.

Practical completion and handover should involve a thorough joint inspection, a documented defects list, and a period of rectification before the final payment is released. Homeowners who rush this phase to get the keys or get back into the house often regret it. Defects that are easy to manage as a list at handover become much harder to pursue once you're living in the building and the builder has moved on. The occupation certificate is issued by your certifier once the building is confirmed to comply with the development consent conditions and the Building Code.