Are you buying software, components, or a whole building?

Why it matters: All3, Reframe Systems and Reds10 describe delivering buildings; Foldcast and Strong by Form sell building elements. All3 says its system is designed to be used as a whole. In the demo: Write down the scope boundary (design, fabrication, transport, installation, fit-out) before comparing prices.

Who controls design and carries design liability?

Why it matters: Reframe says it acts as architect of record and general contractor. All3 says you can use your own architect and export DWG or BIM. In the demo: Ask who signs as engineer of record and what your own designer can still change after the model is frozen for manufacture.

What is approved where you are building?

Why it matters: Foldcast says its elements are designed to Swiss and EU standards. Strong by Form's FAQ places Woodflow-core at TRL 6. US approvals were not stated on the pages we read. In the demo: Ask for the certification documents and any prior approval by your building department.

What is automated, and who checks it?

Why it matters: Reds10 describes automatically generated CNC-ready steelwork drawings; All3 describes AI-generated layouts and structural models. In the demo: Ask how automated outputs are reviewed before fabrication, and for the defect or rework rate on recent projects.

What happens if the factory slips?

Why it matters: All3 and Reframe run their own factories near their markets; a single plant is a single point of schedule risk. In the demo: Ask about factory capacity, backup plans, and liquidated damages that apply to the factory schedule.

How is it priced and what is excluded?

Why it matters: None of the five vendors we read publishes prices; Reframe promises upfront pricing. In the demo: Ask for a fixed price with exclusions listed, and price transport, cranes and site work separately.

Home / Guides / Questions to ask before an offsite or prefab pilot

Questions to ask before an offsite or prefab pilot

A checklist for a first conversation with an offsite or prefab vendor. These are our suggestions, drawn from our offsite category hub. They are not findings: Means & Methods Lab has not tested any tool or system. Where a question mentions a vendor, it points to something that vendor publishes.

SUGGESTIONS, NOT FINDINGS. No tool has been tested by Means & Methods Lab. Vendor facts are desk research from vendor websites and are not verified. Updated 2026-10-15.

The questions (6)

Q01Are you buying software, components, or a whole building?
WHY IT MATTERS · All3, Reframe Systems and Reds10 describe delivering buildings; Foldcast and Strong by Form sell building elements. All3 says its system is designed to be used as a whole.
IN THE DEMO · Write down the scope boundary (design, fabrication, transport, installation, fit-out) before comparing prices.
Q02Who controls design and carries design liability?
WHY IT MATTERS · Reframe says it acts as architect of record and general contractor. All3 says you can use your own architect and export DWG or BIM.
IN THE DEMO · Ask who signs as engineer of record and what your own designer can still change after the model is frozen for manufacture.
Q03What is approved where you are building?
WHY IT MATTERS · Foldcast says its elements are designed to Swiss and EU standards. Strong by Form's FAQ places Woodflow-core at TRL 6. US approvals were not stated on the pages we read.
IN THE DEMO · Ask for the certification documents and any prior approval by your building department.
Q04What is automated, and who checks it?
WHY IT MATTERS · Reds10 describes automatically generated CNC-ready steelwork drawings; All3 describes AI-generated layouts and structural models.
IN THE DEMO · Ask how automated outputs are reviewed before fabrication, and for the defect or rework rate on recent projects.
Q05What happens if the factory slips?
WHY IT MATTERS · All3 and Reframe run their own factories near their markets; a single plant is a single point of schedule risk.
IN THE DEMO · Ask about factory capacity, backup plans, and liquidated damages that apply to the factory schedule.
Q06How is it priced and what is excluded?
WHY IT MATTERS · None of the five vendors we read publishes prices; Reframe promises upfront pricing.
IN THE DEMO · Ask for a fixed price with exclusions listed, and price transport, cranes and site work separately.

What to bring

Site plan and zoning constraints.
Target unit mix or element spans and loads.
Your schedule milestones and the date site work must be ready.
The name of your architect and engineer of record, if you have them.

Sources

All3 FAQ https://all3.com/faq
Reframe Systems https://www.reframe.systems/
Reds10: Designing at Machine Speed https://www.reds10.com/news/designing-at-machine-speed/
Strong by Form https://www.strongbyform.com/

Tools mentioned (alphabetical, not ranked)

All3 · AI design, robotic prefab & on-site assembly robot (housing)
Foldcast · Structurally optimized concrete elements in paper moulds
Reds10 · Industrialised modular construction with automated design (UK)
Reframe Systems · Microfactory design-build housing (robotics & physical AI)
Strong by Form · Computationally designed engineered timber (Woodflow)

Side-by-side comparisons

Means & Methods Lab has no commercial relationship with any vendor on this page. Rankings and placement are never for sale. See how we make money.