Construction Timeline Planning
Critical path analysis for post-approval projects. Understand which tasks run in parallel, typical durations, and how to estimate your construction start date.
After your DA is approved, the clock starts on condition clearance. Understanding which tasks can run in parallel vs which must wait is the key to minimising your time to construction. This guide uses critical path method (CPM) principles to help you plan your post-approval timeline.
Key Principle: Parallelise Where Possible
Most consultant engagements are independent — a landscape architect doesn't need to wait for the traffic engineer, and the acoustic consultant doesn't depend on the arborist. By engaging all required consultants simultaneously, you can reduce a 120-day sequential timeline to 50-60 days.
Pre-Construction
30-120 daysAll conditions must be cleared, consultant reports completed, and building permit obtained before construction can begin.
| Task | Duration | Can Parallelise? |
|---|---|---|
| Condition analysis & consultant engagement | 5-10 days | Sequential |
| Landscape plan preparation | 15-30 days | Yes |
| Traffic impact assessment | 20-40 days | Yes |
| Acoustic assessment | 15-25 days | Yes |
| Arborist / tree protection plan | 10-20 days | Yes |
| Stormwater management plan | 15-30 days | Yes |
| Council endorsement of reports | 15-30 days | Sequential |
| Building permit application | 15-30 days | Sequential |
Construction
Varies by projectActive building phase with milestone tracking, claims processing, and ongoing compliance monitoring.
| Task | Duration | Can Parallelise? |
|---|---|---|
| Site establishment & earthworks | 10-20 days | Sequential |
| Foundations & slab | 15-30 days | Sequential |
| Frame & structure | 20-60 days | Sequential |
| Lock-up (roof, windows, doors) | 15-30 days | Sequential |
| Internal fit-out (services, finishes) | 30-60 days | Yes |
| External works (landscaping, driveways) | 15-30 days | Yes |
Post-Construction
15-45 daysFinal inspections, occupancy certification, defect liability period, and retention release.
| Task | Duration | Can Parallelise? |
|---|---|---|
| Final inspections (building surveyor) | 5-10 days | Sequential |
| Occupancy permit / compliance certificate | 5-15 days | Sequential |
| Defect liability period begins | Ongoing days | Sequential |
| ESM annual statement (commercial) | Annual days | Sequential |
Example: Typical Residential Timeline
Week 1: Engage all consultants simultaneously (landscape, traffic, acoustic, arborist, stormwater)
Weeks 2-6: Consultant reports prepared in parallel (longest task determines duration)
Weeks 7-10: Submit all reports to council for endorsement
Weeks 10-12: Lodge building permit application with endorsed reports
Weeks 12-14: Building permit processing
Total: ~14 weeks (vs 30+ weeks if done sequentially)
How Urban Pulse Helps
Urban Pulse's timeline engine analyses your specific DA conditions and calculates the critical path through your post-approval workflow. It identifies which consultant engagements can run in parallel, adds risk-adjusted buffers for council delays, and gives you an estimated construction start date. As each task progresses, the timeline updates in real time.
Calculate Your TimelineKnow Exactly When Construction Can Start
Urban Pulse calculates your critical path timeline from DA conditions to construction commencement.