Construction Timeline Guide How Long Projects Really Take
Almost every delayed project was delayed in the first month, when the schedule was agreed without a procurement plan behind it.
A 1,000 sq ft independent house typically takes 8–12 months from sanction to handover, while larger villas take 12–18 months and commercial buildings 12–18 months.
Realistic durations
| Project type | Typical duration | Main driver |
|---|---|---|
| 1,000 sq ft home | 8–12 months | Funding continuity and approvals |
| Villa (4,000+ sq ft) | 12–18 months | Structure complexity and finishes |
| Office fit-out (5,000 sq ft) | 10–16 weeks | Building rules and long-lead items |
| Commercial building | 12–18 months | Approvals, structure, services |
| Industrial shed | 6–12 months | Span, utilities and equipment schedule |
What actually causes delays
Approval cycles, monsoon on open structures, long-lead imported items, mid-project design changes, funding gaps that stall mobilisation, and trade sequencing errors where one contractor blocks another. Of these, design changes and funding gaps are entirely within the owner's control and they cause the majority of overruns.
How to compress a schedule safely
Order long-lead items during the design stage. Overlap design and procurement rather than running them sequentially. Prefabricate joinery off site. Add a second shift on non-noisy activities. What does not work is compressing curing time that is not a schedule saving, it is a structural risk.
Reading a schedule properly
Ask for the critical path, not just a bar chart. Ask what float exists and where. Ask which items are already ordered. A programme without a procurement column is decoration.
