Is Prefab and Shop Work Starting to Win More Bids?
The general contractor asks if you can build the assemblies in your shop and ship them ready to install. You’ve always built everything on site.
More owners and GCs now expect some of the work to be built off site. This page shows a trade contractor how to test prefab on one job before deciding how far to take it.
Dr. Paul Borosky, Business Consultant, has worked with 1,000+ owners deciding when a new way of working is worth it.
Talk to Dr. PaulCall or text (321) 948-9588.
Last Updated: November 2026
Real World Help From Dr. Paul
Construction Business Plan Template
A plan and a profit model built for contractors.
See the construction templateHow This Guide Works
Need the quick version? Doctor Owl’s answer and the 3 steps below. Want the story? In Dr. Paul’s Fabled Forest Business School Series, Bella loses a bid to a builder who promised pre-built wall panels, and Chuck wonders if their barn could become a shop. The example follows the trend.
- List the assemblies your crew builds the same way on almost every job.
- Pick the one that takes the most field time.
- Time how long it takes on your next job, so you have a number to beat.
Why Did Bella Turn Part of Her Barn Into a Shop?
Bella lost the school addition bid. The winner promised to build wall panels off site and ship them ready to set. It cut weeks off the schedule.
Doctor Owl asked, “Is this a fire, or a foundation?” One lost bid wasn’t a fire. Learning to build some work off site could be a foundation. They used Dr. Paul’s Organize-Plan-Grow™ Strategy.
- Organize. Chuck listed what the crew built the same way on every job. Window frames and simple wall sections topped the list.
- Plan. Bella cleared one corner of the barn and had two crew members build window frames there for the next job, instead of on site.
- Grow. Chuck compared time and mistakes on that job to the last one. If shop work keeps saving time, they’ll add more.
The frames went in faster and fit better. The next bid mentioned it.
Why Are More Owners Asking for Prefab?
In a February 2026 study by Dodge Construction Network and DEWALT, 82% of mechanical contractors said fabrication capability is now a prerequisite for winning projects. More than three-quarters said owners and general contractors now require it.
Contractors in the study reported benefits like better cost performance, fewer errors, and higher labor productivity, with one in five reporting time savings of 20% or more. The study covered mechanical contractors, so results in other trades may differ.
Source: Dodge Construction Network and DEWALT (February 19, 2026).
Will Prefab Show Up in Your Next Bid?
If you’re a trade contractor bidding commercial work, you may start seeing prefab in the bid requirements. It’s not just for big firms anymore.
Shop work also helps with the labor shortage. Building in a controlled space can take less time and fewer people than building on site in bad weather.
How Do You Test Prefab Without Betting the Company?
- Start with one repeat assembly. Something you build the same way on most jobs.
- Use the space you have. A corner of a warehouse or barn is enough to start.
- Time it both ways. Field versus shop, on similar jobs.
- Plan the delivery. Shop-built pieces have to get to the site without damage.
- Add more only if it pays. Let the numbers decide how far to go.
What Does One Shop-Built Assembly Save?
Illustration only. Round numbers, not a real company.
Say a repeat assembly takes your crew a full day on site and half a day in the shop. On a job with ten of them, that’s five crew days saved. Fewer days on site can mean a better schedule to bid, and less time exposed to weather.
Thinking about equipment for a shop? The QBP lesson on buying, leasing, or renting equipment helps. Plan the space and costs with the construction business plan template.
Want Help Deciding If Prefab Fits?
Bring your most repeated assemblies to a free 15-minute call with Dr. Paul. You leave knowing what to test first, and what more help would cost if you want it.
Or call or text (321) 948-9588.
What Do Contractors Ask About Prefab?
Is prefab only for big contractors?
No. Many small contractors start with one assembly in a small shop space.
Does prefab work for every trade?
Not equally. The Dodge study covered mechanical contractors. Test it on your own work before committing.
What’s the biggest risk?
Paying for space and equipment before you know the time savings are real. Start small.
About the Author
Dr. Paul Borosky, DBA, MBA, helps contractors decide when a new way of working is worth it. His clients are in all 50 states and Canada.
Sources
- Dodge Construction Network and DEWALT, Optimizing Digital Fabrication for Mechanical Contractors (February 19, 2026).