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Office Renovation: Should You Choose a General Contractor or a Project Manager?

24/02/2026

réunion de contractant général à paris pour le choix du mobilier et des matériaux

General Contractor: The One-Stop Shop Approach

A general contractor is a service provider who takes full responsibility for an entire renovation project. Specifically, they select, coordinate, and supervise all trades: electrical, plumbing, partitioning, floor coverings, false ceilings, carpentry, etc. The client, meaning you, the client company, has only one point of contact for all the works.

 

What This Means in Practice

The general contractor commits to a global price and a firm schedule. They absorb coordination risks between trades, manage technical interfaces, and assume contractual responsibility for the entire service. For a real estate department or a CFO accustomed to managing budgets under constraints, this approach offers valuable financial visibility from the outset.

This formula is also particularly well-suited for office renovation projects with a well-defined program upstream: a fixed-date move, delivery before the start of the academic year, or a budget approved by the board of directors. In this sense, the general contractor is the natural ally for organizations that want to control project risk without having the internal technical resources to manage a construction site.

 

Limitations of the Model

The trade-off for this operational convenience is reduced flexibility in selecting intervening companies. The general contractor works with their own network of subcontractors, and the client company does not always have control over the choice of craftsmen or suppliers. Furthermore, the proposed packages include a risk premium associated with global responsibility: the displayed price is generally higher than what would be obtained by purchasing separate lots.

 

Project Management: Control for Ambition

Project management refers to a design and construction supervision mission entrusted to an independent professional: an architect, technical design office, construction economist, or a firm specializing in commercial fit-outs. The project manager does not carry out the works themselves; they design them, specify them, consult companies in separate lots, and then oversee the construction site on behalf of the client.

 

A Lever for Quality and Optimization

One of the major advantages of project management for offices is the freedom of consultation. By launching tenders by lot, the client can put several companies in competition for each trade and optimize each budget item independently. For large-scale renovation operations, such as the restructuring of a 2,000 m² floor, multi-site relocation, or the transformation of a Haussmannian building into contemporary workspaces, the savings achieved compared to a general contractor’s lump sum can be substantial.

Project management is also the natural choice when the project has strong architectural or functional ambitions: rethinking the organization of workspaces, integrating complex technical constraints (ERP classification, historical monuments, acoustic and thermal performance), or designing tailor-made environments that reflect the company’s identity.

 

A More Demanding Operating Model

Conversely, project management requires greater involvement from the client. There are more interfaces with different companies, contractual responsibility is distributed among the lots, and consultation and finalization times are generally longer. This organization is better suited for companies with a structured real estate department, or those that use an assistant to the project owner (AMO) to represent them.

Your turnkey design project

In this article

Adrien Morvan

Director CLUE ME

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Adrien Morvan

Director CLUE ME

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