In 2026, a quality prefab home in Europe costs €1,100-€1,700/m² semi-finished and €2,000-€3,500/m² turnkey, before land and site costs. BIOBUILDS publishes fixed model prices: from €39,800 for the 24 m² Nest (semi-finished) to €279,800 for the 142 m² Sanctuary turnkey, with a Passivhaus-certified building system at every size. This guide breaks down the real numbers: per model, per finish level, per country.
Most prefab manufacturers answer the price question with "it depends" and a quote form. That makes comparison shopping slow and budgeting harder than it needs to be. This guide answers it with published numbers instead, and explains exactly what those numbers do and do not contain, so you can compare any offer you receive, from us or from anyone else.
One definition before the prices: this article covers the price of the house itself. Land, foundation, utility connections, and permits sit outside every manufacturer's quote, ours included. A per-model summary of those costs appears near the end of this guide.
What a prefab home costs per square meter in 2026
One scope note first: based on our analysis, the prefab home worth buying in 2026 is timber-built and energy-certified. The full reasoning lives in those two guides; this one takes it as the baseline and prices that segment.
Within it, serious European manufacturers (timber-frame or CLT, factory-built, energy-certified) cluster into two price bands by finish level:
German market surveys put the average turnkey Fertighaus at €2,700-€3,500/m² in 2026. Premium manufacturers producing in Central and Eastern Europe deliver the same certifications at €2,000-€2,500/m². Below roughly €1,000/m² turnkey, you are no longer looking at a certified house; you are looking at a container conversion or an uninsulated summer structure, which is a different product category.
BIOBUILDS, the European manufacturer publishing this guide and one of the best-priced producers in the certified segment, sits at €1,970-€2,490/m² turnkey depending on model size, with every model built on the same Passivhaus-certified system: 35 cm C24 timber-frame walls, STEICO wood-fiber insulation, triple-glazed Passivhaus-certified windows, and MVHR ventilation with heat recovery.
Per-square-meter price only means something at the same finish level and certification level. A €1,400/m² semi-finished Passivhaus shell and a €2,400/m² turnkey code-minimum house are not cheaper and more expensive versions of the same thing; they are different products.
Published model prices (July 2026)
These are the current BIOBUILDS list prices, net of VAT. The same numbers drive the online configurator, so the price you assemble there is the price on the contract.
Two patterns worth noticing. First, the per-square-meter price falls as the house grows: a 142 m² Sanctuary costs 21% less per m² than a 24 m² Nest, because bathrooms, kitchens, and technical systems cost nearly the same whether they serve 24 or 142 square meters. Second, the turnkey premium over semi-finished runs €20,000-€120,000 depending on size; what that buys is itemized in the next section.
Prices current as of July 2026 and shown net of VAT. Check the configurator for today's figures.
Semi-finished vs turnkey: what each price contains
Every BIOBUILDS home, at either finish level, arrives with the complete envelope of the Passivhaus-certified building system. The difference is the interior.
Semi-finished is not a bare shell. The remaining owner work is finishing surfaces: paint or panel the walls, bond the parquet, fit light fixtures and outlet covers. There is no drywall phase and no construction dust, which is why many buyers with more time than budget choose it.
Turnkey adds the finished interior: painted walls, flooring installed, complete bathrooms with fittings, kitchen cabinetry with appliances, interior doors, and lighting. You receive keys to a home you can sleep in that night.
For a deeper comparison of the two paths, see the turnkey and semi-finished pages.
What actually moves the price
Four factors dominate the final contract figure, in this order:
- Size. The largest lever, but sub-linearly: doubling floor area raises the total by roughly 80%, not 100%, because the expensive rooms don't double.
- Finish level. Turnkey adds 50-85% over semi-finished depending on model, concentrated in kitchen, bathrooms, and flooring.
- Configuration choices. Cladding type, glazing extents, interior packages. In the configurator these reprice live, so there is no quote-revision loop.
- Distance. Transport within Europe runs €8-€15 per kilometer. Romania to southern Germany, around 1,500 km, adds roughly €12,000-€22,500. Production in Romania still leaves the delivered total well below equivalent German-built offers.
What does not move the price: negotiation. Published fixed prices mean the figure on the website is the figure in the contract, indexed to the same list for every buyer.
Budget tiers: what each budget buys in 2026
The right-hand column adds the full-scope site-cost ceiling from the next section, so it is the safe upper bound to plan financing around; most projects finish below it. Land and VAT come on top.
The costs outside the house price
No manufacturer's quote includes the ground it stands on. How much these add depends on your plot and on how much you delegate: the ranges below are the full-scope ceiling, with every professional service included (architect, construction manager, energy consultant, full permitting). Most projects land well below them, often by more than half, because owners handle parts themselves or the plot simply doesn't need every line item:
These ceilings cover the complete before/during/after stack: surveyor, geotechnical report, architect, permit fees, structural calculations, energy consultant, ground-screw foundations, crane, utility hookups, earthworks, and a contingency line. Many items are optional, several can be handled by the owner, and all vary heavily by site; we walk through the per-item breakdown for your model during the offer process, so you budget only the lines your plot actually needs.
VAT and country notes
List prices are net. Add your country's VAT to every figure, house and site costs alike:
- Germany: 19%
- Austria: 20%
- Romania: 21%
Germany additionally offers subsidized KfW financing for qualifying climate-friendly new builds. The loan ceiling depends on the funding stage; the highest ceiling, currently up to €150,000 per housing unit, requires QNG eligibility, and a certified energy-efficiency expert must assess each project. Our KfW page explains how the Passivhaus-certified system relates to the Effizienzhaus 40 requirements.
The number that keeps paying: running costs
Purchase price is a one-time number; heating bills repeat for decades. The Passivhaus-certified system holds heating demand around 15 kWh/m² per year, roughly a tenth of what typical existing European housing consumes. Over 30 years, that difference compounds into tens of thousands of euros, which is why comparing prefab offers on purchase price alone systematically favors the wrong house. Our Passivhaus ROI guide runs those numbers in detail, and the savings calculator does it for your specific case.
For a manufacturer-by-manufacturer market comparison across price tiers, see How Much Does a Modular Home Cost in 2026?; this guide and that one answer different questions, this one being: what does the house itself cost, exactly, from the published list.
