All-Trades Renovation (TCE) or Separate Craftspeople: Which Should You Choose?

Renovating a Paris apartment means bringing a dozen trades into conversation: mason, plumber, electrician, dryliner, joiner, tiler, painter. The real question is not who does what, but who orchestrates it all. On one side, a single point of contact who carries the entire project and its responsibility. On the other, coordination that remains in your hands, craftsperson by craftsperson, trade by trade.

This choice may look technical, but in reality it determines your budget, your timeline and, above all, your peace of mind for several months. Before signing anything, you need to understand exactly what a “tous corps d'état” company (TCE, or all-trades contractor) actually covers, when it becomes essential, and when independent craftspeople remain the wiser solution.

In brief

• Tous corps d'état (TCE) brings all the trades on a project together under a single contract, with one point of contact and one line of responsibility.
• Its strengths: assured coordination, a controlled schedule, one single guarantee if defects arise.
• Separate craftspeople still make perfect sense for a simple, single-trade project, when you have the time and inclination to coordinate.
• TCE may look slightly more expensive on paper, but it often saves money on delays and disputes.
• Before signing: check the insurance, the exact scope of the quotation and who is managing the project day to day.

What “tous corps d'état” really covers

The expression is widely used, but what it includes varies from one provider to another. Strictly speaking, a tous corps d'état company, sometimes called a general building contractor, handles all the technical packages of a renovation, from structural work through to finishes, under one contract.

In practice, a complete TCE service most often includes:

• stripping out and demolition (partitions, finishes, old equipment);
• structural work and masonry (openings, wall reinforcements, creation of stair or service openings);
• services: compliant electrical systems, plumbing, heating, ventilation;
• second-fix works: insulation, plastering, linings, joinery;
• finishes: tiling, parquet, painting, fitted joinery, kitchen and bathroom.

The essential difference from simply assembling a group of craftspeople comes down to one word: integration. One party plans the sequence of interventions, orders materials, controls quality and answers to you if a problem arises. You are not managing fifteen relationships in parallel; you are managing just one.

TCE, general contractor, project management: do not confuse them

Three concepts often overlap in quotations, without being equivalent.

• The general contractor carries out the works and coordinates its own teams or subcontractors.
• Project management designs the project and oversees its execution, but does not hold the trowel.
• The integrated model brings design and delivery under one roof: the project is drawn, costed and then built with no break in responsibility between the plan and the site.

For an ambitious apartment renovation, redistributing rooms, opening up a kitchen, carrying out a complete refurbishment, this last model often offers the greatest coherence.

The advantages of TCE: coordination, timelines, single responsibility

If tous corps d'état is so appealing for major renovation work, it is because it solves three problems that can poison projects run in scattered order.

Coordination is no longer your problem

On a building site, the order of interventions is almost as important as their quality. The electrician comes before the dryliner, the plumber before the tiler, painting after the joinery. With separate craftspeople, you often become, despite yourself, the conductor, and the slightest delay from one trade can bring the entire schedule down. In TCE, this logistics burden is absorbed by the company: it is their job, not yours.

Timelines are better controlled

Delays on a building site rarely come from a slow craftsperson; they come from dead time between two poorly sequenced interventions. Single management reduces these gaps: teams follow one another without waiting, material orders are anticipated, unforeseen issues are arbitrated internally. In Paris, where every additional week on site is costly (rent, temporary accommodation, the property being unavailable), this time saving has very real value.

One line of responsibility if defects arise

This is the decisive argument. When a crack appears or water ingress is discovered a few months after completion, a project carried out by several independent craftspeople can quickly become a game of pass-the-parcel: the tiler blames the plumber, who points back to the mason. With a single point of contact, the question does not arise, one responsible party, one guarantee to activate. It is a considerable legal comfort, particularly in relation to the ten-year guarantee.

When separate craftspeople are enough

The all-in-one approach is not always the right answer. Calling on independent craftspeople remains relevant, and sometimes more economical, in several situations.

• A single-trade project. Redoing only a bathroom, changing a parquet floor, repainting the apartment: only one trade is involved, and coordination is almost non-existent.
• Works spread over time. If you renovate room by room, according to the seasons and your budget, the logic of a global project loses some of its appeal.
• You have the time and the taste for managing the works. Some owners enjoy choosing each craftsperson, comparing quotes and following the site closely. Provided you are available during the week and rigorous, the savings can be there.
• A network of craftspeople already tried and tested. If you know and trust professionals you have worked with before, a bespoke assembly can be justified.

The tipping point is simple: the more the packages multiply and interlock, the more coordination becomes a profession in its own right, and a risk if it rests on your shoulders alone.

The real impact on budget and stress

This is where preconceived ideas are hard to shake. It is easy to assume that TCE “costs more”. The reality is more nuanced.

On the budget

On the headline quotation, an integrated service will often show a higher figure than the sum of several craft quotes, because coordination, overall insurance and management are all valued. But that comparison is misleading, because it ignores what solo coordination really costs you:

• additional costs linked to delays and poor sequencing (tiling that has to be redone because a water inlet was not in the right place);
• remedial work and disputes not covered when responsibility is diluted;
• your personal time, difficult to quantify but very real, spent chasing, arbitrating and supervising.

As an indicative note for 2026, the added value of integrated management is rarely visible on the “coordination” line of the quotation; it is visible on the final invoice, the one that does not run away.

On stress

A renovation is one of the most anxiety-inducing projects an owner can undertake. Multiplying points of contact means multiplying points of friction, phone calls and urgent decisions to be made between two work meetings. Entrusting the whole project to one responsible party transforms that mental load into a regular meeting with a single contact who lives and breathes the schedule. For many, this transfer of responsibility is the real reason to choose TCE.

The questions to ask before signing

Whether you are leaning towards a tous corps d'état company or a collection of craftspeople, a few questions will help separate serious providers from the rest.

1. Is the scope exhaustive? Does the quotation cover all packages, including stripping out, rubble removal and finishes? Watch closely for anything marked “not included”.
2. Who is actually managing the site? Is there a site manager or a clearly identified single point of contact? How often will they update you?
3. What insurance is in place? Ask for valid certificates of civil liability and ten-year guarantee insurance, in the name of the company signing the contract.
4. Subcontracting or integrated teams? Knowing who will actually be working on site, and under whose responsibility, avoids unpleasant surprises.
5. How are unforeseen issues managed? In period Paris buildings, surprises are the rule. The procedure for variations and approval of additional costs must be clear before work begins.
6. Is the quotation broken down item by item? A non-detailed lump sum prevents any serious comparison and hides discrepancies.

Making the right choice starts with clarifying who is in charge

Ultimately, the choice between tous corps d'état and separate craftspeople is not a choice between two levels of workmanship: it is a choice between two ways of carrying the responsibility for coordination. For a single-trade refresh, keeping that responsibility yourself is legitimate. For a complete renovation, where around ten trades follow one another over several months, it becomes a profession, with its risks and its value.

This is the conviction that underpins the integrated model: designing, costing and coordinating the whole project under one roof, with a single point of contact and a responsibility that is never diluted between the plan and the site. At Lumiera, every Paris renovation is conceived in this way, so that the owner has only one name to remember, and one point of contact from the first sketch to the handover of the keys.

A renovation project in Paris and the desire for a single point of contact? Let’s talk: we design, cost and manage your project from start to finish, with complete transparency.