Prefabricated Prefinished Volumetric Construction is a building method where complete, finished concrete modules are manufactured in a factory and assembled on site like high-precision building blocks.
Instead of constructing a building piece-by-piece in the open air, PPVC breaks it into self-contained volumetric modules — each a complete room or section of a room.
Every module is cast in structural precast concrete with pre-embedded steel reinforcement and MEP services, then fitted out indoors: internal walls, flooring, ceilings, windows, doors, plumbing, electrical, tiling and even fixtures are installed before the module ever leaves the factory. Finished modules — typically 80–95% complete — are then transported to site, lifted into position by crane and connected together to form the finished building.
Against the persistent constraints of conventional construction — unpredictable on-site quality and timelines — concrete PPVC is a transformative solution for housing delivery. The system suits structures up to 40 storeys, complies with permanent construction standards, and is ideal for public and affordable housing, urban renewal and old-city renovation.
Volumetric modules can be framed in structural steel or precast concrete. Steel volumetric has delivered landmark high-rise hotels and student housing; A1 Prefab specialises in precast concrete for its inherent fire resistance, acoustic performance and permanent durability — see real PPVC case studies.
Site preparation runs in parallel with factory fabrication — which is how PPVC saves so much time.
The building is engineered and modelled in 3D BIM, optimised into repeatable modules with services, finishes and connections fully coordinated before production begins.
Steel reinforcement cages are assembled and set into precision steel formwork, with cast-in plumbing, conduits and connection points positioned exactly to the model.
Structural-grade concrete is poured, vibrated and cured under controlled conditions to produce a strong, dimensionally accurate module shell.
Indoors and weather-protected, modules are fitted with insulation, partitions, windows, doors, MEP services, flooring, tiling, joinery and fixtures — up to 95% complete.
Each module passes a dual-phase factory acceptance test and quality-control protocol, then is wrapped and transported to site just-in-time to suit the installation sequence.
Cranes lift modules onto a prepared foundation and stack or set them side-by-side, forming a watertight structure in a fraction of traditional time.
Inter-module structural, service and waterproofing connections are completed for immediate utility access on site; final inspections pass and the finished building is handed over.
Because the heavy lifting happens in the factory, the on-site phase is fast, clean and predictable.
A prepared foundation receives the modules in a planned sequence. Cranes place each unit to millimetre tolerances, and crews focus only on connections and finishing the joints — dramatically reducing the trades, time and risk on site.
Concrete is non-combustible and provides excellent inherent fire ratings.
Dense mass blocks sound transfer between rooms and from outside.
Stabilises indoor temperatures and improves energy efficiency.
Resistant to weather, pests and decay for a long service life.
Because factory fabrication runs in parallel with site and foundation works, overall programmes are typically reduced by 30–50%. The watertight structure can be erected on site in a matter of days once modules arrive.
Module sizes are governed by transport and crane limits. A1 Prefab designs modules to suit road transport regulations and the lifting capacity available for your site — see our Models page for typical dimensions.
It's generally better. Controlled factory conditions, jigs and repeatable processes deliver tighter tolerances and consistent, fully-inspected finishes, free from weather damage and rushed site work.
Yes. While standardised modules are the most cost-effective, layouts, finishes, façades and fit-out can be tailored to your brief. Talk to us about your requirements.
Repetitive, cellular building types perform best — housing, apartments, hotels, student and worker accommodation, healthcare and education. We also deliver standalone studios and ADUs.
Share your brief and we'll advise on feasibility, modularisation and programme.
Talk to our team