The question "is prefab cheaper than traditional construction?" does not have a single answer - it depends on project type, scope, and how you measure cost. Here is an honest breakdown of where prefab saves money, where it costs the same, and where it may cost slightly more upfront but pays off in total project cost.
Where Prefab Typically Saves Money
- ✓Labour on site: Prefab panel installation is faster than stick framing. Fewer labour hours on site means lower framing cost in most cases.
- ✓Schedule savings: Every week saved on a construction timeline has real dollar value - reduced carrying costs, less equipment rental, earlier occupancy or rental income.
- ✓Waste disposal: Less site waste means lower bin rental and disposal costs.
- ✓Rework reduction: Factory precision means fewer errors to correct. Rework is one of the largest hidden costs in site-built construction.
Where Prefab Costs About the Same
- ✓Materials: Lumber, sheathing, and hardware costs are similar whether panels are built in a factory or on site.
- ✓Foundation: Foundation type and cost is independent of whether you frame with prefab or stick.
- ✓Finishing: All interior and exterior finishing work - drywall, siding, roofing, windows - is identical regardless of framing method.
Where Prefab May Cost More
- ✓Panel fabrication: Some custom panel configurations cost more than standard stick framing if the design is complex or non-standard.
- ✓Engineering and design: Prefab systems often require more detailed structural drawings upfront, which adds design fees.
- ✓Transportation: Panels must be transported from the fabrication facility to site, which adds cost compared to materials delivered on flatbeds.
Cost Comparison: Typical Victoria BC Project
| Cost Category | Stick Frame (Site-Built) | Prefab Panel System |
|---|---|---|
| Framing labour | $25,000 - $55,000 | $18,000 - $42,000 |
| Panel fabrication | N/A | $8,000 - $20,000 |
| Schedule savings (value) | $0 | $15,000 - $40,000+ |
| Waste disposal | $1,500 - $4,000 | $500 - $1,500 |
| Total framing phase (rough) | $26,500 - $59,000 | $41,500 - $63,500 |
| Net advantage (incl. schedule) | Baseline | Often 10-25% total project savings |
Pro tip: The biggest financial advantage of prefab is not the framing line item - it is the schedule. On a $1.2M build, saving 4 weeks of construction time can be worth $20,000-$40,000 in financing, crew overhead, and earlier project completion.
Which Projects Benefit Most from Prefab?
- ✓Multi-family and row housing where repetition across units maximizes panel reuse
- ✓Projects with tight timelines where schedule certainty has high value
- ✓Winter builds in Victoria where reducing open-framing time minimizes moisture risk
- ✓BC Step Code compliant builds where advanced wall assemblies are required
Want a cost comparison for your specific project? We can provide a prefab vs site-built estimate for your plans.
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