A registered architect is not just a simple draftsman. Their involvement in a real estate project covers technical feasibility, compliance with urban planning regulations, cost estimation, and site coordination. Understanding precisely what this support entails helps avoid discrepancies between the dream project and the delivered result.
RE2020 and ZAN objective: what the architect manages on your behalf
Since the gradual implementation of the RE2020 (environmental regulation), every new construction must meet carbon emission thresholds throughout its entire life cycle. In practical terms, the choice of materials, heating methods, insulation, and even the building’s orientation directly influence the project’s regulatory compliance.
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The architect calculates these parameters from the sketch phase. They decide between a wooden frame (low carbon footprint but structural constraints) and low-carbon concrete, for example, based on the land, budget, and program.
The net zero artificialization (ZAN) objective, stemming from the Climate and Resilience law, adds a layer of complexity. Local urban planning plans now incorporate restrictions on land use and densification. An architect trained in these issues identifies, even before the building permit is submitted, the real margins for maneuver on a given plot.
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When an individual considers building their project with Bâtir Architecte, this cross-reading between environmental constraints and technical feasibility is part of the foundation of the service.
BIM and digital modeling: anticipating costs before the first shovel hits the ground
BIM (Building Information Modeling) refers to a collaborative 3D digital model that centralizes all project data: structure, networks, joinery, insulation. According to the “Digital Transformation and BIM” report from the National Council of the Order of Architects (CNOA, 2024), this tool is becoming widespread, including for individual houses and small private projects.
The direct benefits for the project owner are threefold:
- Detection of technical conflicts (a network crossing a beam, a poorly positioned duct) occurs on screen, not on site, which avoids costly rework.
- Comparing plan variants allows testing multiple room or facade configurations without having to redo a complete file.
- Estimating operating costs (heating, maintenance) relies on the actual characteristics of the materials integrated into the model, not on generic averages.
An architect proficient in BIM produces a more precise consultation file for companies. The received quotes are therefore more reliable, and change orders during construction decrease significantly.
Complete project management or partial mission: choosing the right scope
Not all real estate projects require the same level of intervention. The complete mission covers design, permit submission, contractor consultation, and site monitoring until completion. The partial mission can be limited to the sketch and building permit, with the project owner then managing the artisans themselves.
Complete mission: when to delegate it
For a new construction or a major renovation (structural modification, elevation, change of use), the complete mission reduces the risk of budget overruns. The architect negotiates quotes, verifies payment situations, and checks the compliance of works at each stage.
Partial mission: limits to be aware of
A mission limited to the building permit costs less, but the project owner assumes site coordination. Without technical expertise, this initial saving often turns into additional costs: undetected defects, unpenalized delays, poorly formulated reservations at completion.
The choice of scope also depends on the compensation method. For a fixed fee, the cost is known upon signing. For a percentage of the construction cost, the architect has an interest in optimizing the overall budget, as their remuneration depends on it.
Advisory visit before real estate purchase: a diagnosis that few individuals request
Before purchasing a property to renovate, involving an architect during an advisory visit allows for evaluating the real potential of the building. This service, distinct from a standard property diagnosis, focuses on the feasibility of a work program: redistribution of rooms, opening of load-bearing walls, compliance of networks.
The architect also identifies constraints invisible to a non-professional: urban planning easements, height limits, obligations related to the perimeter of a historic monument. This diagnosis directly informs the negotiation of the purchase price, as it provides a reasoned estimate of the budget for the anticipated work.
- Verification of the structure (cracks, humidity, load-bearing capacity of floors) and estimation of the cost of restoration.
- Analysis of the applicable local urban plan to confirm the feasibility of an extension or change of use.
- Drafting a synthetic report usable with the bank to adjust the financing plan.
This service represents a modest cost relative to the total amount of an acquisition. It primarily prevents discovering, after signing, that a renovation project is technically unfeasible or financially unrealistic. An architect engaged at this stage transforms a purchase intuition into a documented decision.