Factory-built modular homes
We build the modules in a heated factory while the foundation goes in on site. Then we deliver them with windows, finishes and services already fitted — and assemble the house in a single day.
How we build
While the modules are built in the factory, the foundation goes in on site. The two jobs run in parallel, so your house is ready far sooner than with a conventional build.
We arrange the modules around your family and your plot. You see the 3D model and the estimate before signing anything.
Frame, insulation, windows, wiring and finishes — all in a heated factory, with checks at every stage.
Meanwhile we install screw piles or a strip footing — no excavation, no weeks of concrete work.
The modules arrive on a low-loader and are craned into place. Most of the house goes up in a single day.
We join the services between modules, connect power and water, clear up after ourselves — and hand over the keys.
Configurator
Each module is 3 × 6 metres. Pick a type and click a cell on the plan — the house takes shape on the right as you go.
Inside the wall
A wall is a stack of layers, and each one has a job. Hover over a layer to see what it does. The slider changes the insulation thickness and shows how much heat each square metre of wall loses.
Based on the thermal conductivity of the materials, allowing for the timber frame. The comparison is indicative: real-world losses also depend on windows, roof and airtightness.
An honest comparison
Modular isn’t for everyone. Here’s where it wins — and where to think twice.
| Derevii modular | Built on site | |
|---|---|---|
| Where it’s built | In a factory, at constant temperature and humidity | Outdoors, at the mercy of the weather |
| Seasons | All year round: in winter the modules simply wait in the factory | Wet trades stop for the winter |
| Quality control | Checked at every stage before dispatch | Depends on the crew you get |
| Mess and noise on site | Minimal: installed in a single day | Months of building site next to the neighbours |
| Architecture | Limited by the module size that can be transported | Any shape, any span |
| Site access | Needs room for a low-loader and a crane | An ordinary driveway will do |
FAQ
Yes. The houses are designed for year-round living: we size the wall, floor and roof insulation to your climate zone, and heat-recovery ventilation can be built in from day one.
You can add a module later. We design the joints and services so a new module connects to the finished house without knocking down any walls.
We help with planning consent and the design. The foundation is usually screw piles — installed in a few days while the modules are still in the factory.
Yes, the modules can be disconnected and moved to another plot. It’s not something you’d do every day, but the option is there.
First step
Send a layout from the configurator or simply describe what you need. We’ll prepare a 3D model, an estimate and a production schedule.