How much does a project manager cost in Rochefort in 2026?

How much does a project manager cost in Charente-Maritime? It is often the first question we are asked — and rarely the one that gets a straight answer. Here is what we charge, what the market offers, and how to understand what you are really paying for before entrusting us with your construction, renovation or extension project.

How are a project manager's fees calculated?

In project management, two billing models coexist. The most common is a percentage of the total works cost excluding VAT, generally between 8% and 12% depending on the complexity of the project, the nature of the works and the level of service required. On a €150,000 renovation project, this represents between €12,000 and €18,000 in fees — an investment, not an additional cost.

The other approach is a fixed fee, agreed upfront on the basis of a precisely defined brief. This is particularly suited to well-defined projects from the outset — an extension with a clear scope, an interior fit-out with no major unknowns. The fixed fee provides complete visibility over the cost of the service, with no surprises along the way.

Best practice: at Cabinet ECHO, our fees are defined at the start of the project, in writing, and do not change without a justified amendment.

Price per m² in project management: a useful benchmark, not an absolute rule

The price per m² is a useful indicator — as long as it is not treated as an absolute rule. A full renovation of a listed townhouse in La Rochelle is nothing like fitting out an open-plan office in Saintes — same surface area, radically different complexity.

As a guide, in Charente-Maritime:

• New build typically represents between €1,500 and €2,500 per m² of works, fees included, depending on the specification and finishes chosen.
• Full renovation generally falls between €1,200 and €2,000 per m², depending on the condition of the building and the ambition of the project.
• Contemporary extensions are often priced between €1,800 and €2,800 per m², depending on structural complexity and the materials selected.

Best practice: these figures are indicative only. Every project is unique — which is precisely why a preliminary study is essential before any serious cost estimate can be produced.

Project manager or architect in Charente-Maritime: what's the difference, and what does it cost?

This is one of the questions we are asked most often — and it deserves an honest answer. An architect is a state-qualified professional, registered with the Order of Architects, whose involvement is compulsory for any new construction exceeding 150 m² of floor area. Their fees are generally between 10% and 15% of the total works cost excluding VAT.

A project manager operates across a comparable scope — design, coordination of tradespeople, site supervision — at generally lower fees, between 8% and 12%. They are not authorised to sign building permits requiring an architect, but can lead the full project management mission on projects that fall below this threshold.

Best practice: for a renovation in Rochefort, an extension in La Rochelle or a new build below the regulatory thresholds in Charente-Maritime, appointing a project manager often offers better value for money — without any compromise on the rigour of site supervision or the quality of the result.

What you pay — and what you actually save

A project manager's fees are not an additional line of expenditure. They are an investment in total project control. A well-managed project in Charente-Maritime means coordinated tradespeople, respected deadlines, negotiated quotes and problems anticipated before they become crises.

On average, rigorous project management helps avoid 10 to 15% in cost overruns caused by poor coordination — often more than the fees themselves.

Best practice: do not choose a project manager on price alone. Choose them on their method, their knowledge of the local market and their ability to speak frankly — about costs, deadlines and risks. In short: the right project manager does not cost you money — they protect your investment.

The golden rule

It is transparency that builds trust. And it is trust that makes for successful projects. Cabinet ECHO supports individuals and businesses across Charente-Maritime on their new build, renovation and extension projects — with clear fees, a proven method and end-to-end commitment.

Before launching your project, get in touch with us. In two hours, we give you a clear picture of your project, its budget and what professional project management can concretely bring to your plans.