Between the surge in land prices in high-demand areas and the tightening of thermal requirements, the actual cost of a new house in France can no longer be summarized by a price per square meter. Comparing the construction and purchase of a newly delivered house requires measuring very different budget items, with guarantees and regulatory constraints that have little in common with those from five years ago.
Overall cost of a new house: custom construction versus turnkey purchase
The two pathways to a new house do not mobilize the same budget lines. The table below summarizes the main expense items according to the mode of acquisition.
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| Expense Item | Construction (land + CCMI) | New purchase delivered (VEFA or turnkey) |
|---|---|---|
| Land | Separate purchase of the land, price varies greatly depending on location | Included in the total price |
| Design / plans | Architect or builder’s design office | Fixed plans, limited customization |
| Servicing | Charged to the buyer if the land is isolated | Generally included |
| Notary fees | Reduced (about 2 to 3% on new) | Also reduced |
| Development tax | Due after obtaining the building permit | Already paid by the developer |
| Construction damage insurance | Mandatory, taken out by the project owner | Taken out by the developer, transferred to the buyer |
| Average delay | 12 to 18 months after permit | Variable, sometimes immediate delivery |
Construction via a single-family home construction contract (CCMI) offers a protective legal framework with a fixed price and penalties for delays regulated by law. The purchase in VEFA (sale in future state of completion) follows a schedule of fund calls linked to the progress of the site, which spreads out the disbursement but limits architectural choices.
To delve deeper into construction options with a specialized player, find information on Maisons Euro France that details various models and configurations available.
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RE2020 and summer comfort: what the regulations change on the construction budget
RE2020 does not merely raise the thresholds for winter energy performance. It now requires addressing summer comfort at the same level as thermal insulation, which fundamentally changes the design of a new house.
In practical terms, the orientation of the building, solar protections (sunshades, roof overhangs), the thermal mass of materials, and efficient ventilation become parameters of regulatory compliance, not just simple options. A project that neglects these aspects simply cannot obtain its compliance certificate.
This requirement has a direct impact on financial decisions:
- The choice of structural materials (concrete, high thermal mass brick, wood with bio-sourced insulation) influences the building’s ability to store nighttime coolness and limit daytime overheating.
- The installation of a heat pump and a thermodynamic water heater replaces traditional heating solutions, with an initial extra cost but reduced ongoing expenses over time.
- The greening of surroundings and management of solar gains guide the site plan from the design phase, which reduces the freedom of placement on certain narrow plots.
On the other hand, a new house compliant with RE2020 shows significantly lower energy bills than an older property, even if renovated. The construction cost associated with RE2020 is partially offset by lower expenses in the first years of occupancy.
Compact houses and surface optimization: the trend reshaping plans
Since 2023-2024, builders have noticed a growing demand for houses with reduced but better-organized spaces. This evolution is not solely linked to land prices. It reflects a shift in priority: to build just what is necessary to limit cost, expenses, and environmental impact.
A compact house (volume close to a square or simple rectangle) costs less to build than an L-shaped or U-shaped house with equivalent surface area. Less facade linear means fewer materials, fewer thermal bridges, and a shorter construction time. The usable surface / built surface ratio improves when unnecessary hallways and oversized rooms are eliminated.
This logic of compactness aligns well with the constraints of RE2020: a simple volume is easier to insulate, ventilate, and protect from summer overheating. Well-designed house plans of less than 100 m² meet the needs of a family without generating “dead” square meters that inflate the construction bill and heating budget.
Legal guarantees and protections: comparing new with old
One of the clearest differences between a new house and an old property concerns the framework of guarantees. In new builds, three levels of protection overlap:
- Perfect completion guarantee (one year): the builder corrects all issues reported at the time of handover or within the following twelve months.
- Two-year guarantee: it covers equipment elements that can be separated from the main structure (faucets, shutters, radiators).
- Ten-year guarantee: it applies to damages compromising the solidity of the work or rendering it unfit for its intended use.
In older properties, only hidden defects can be invoked, with the burden of proof resting on the buyer. The difference in legal security partly justifies the price gap between the two markets.
Construction damage insurance, mandatory for any new construction, allows for rapid pre-financing of repairs without waiting for a court decision. Not taking out this insurance exposes the project owner to significantly longer recourse delays.
The choice between building and buying new ultimately depends on the ability to manage a project over several months (CCMI construction) or to accept a standardized product delivered turnkey. Both options share the same legal guarantees and regulatory compliance, but the level of customization and the structure of financing differ radically.