Meta description: Plan your project without the stress: discover real durations per task (roofing, electricity, bathroom) and the timelines for a total renovation in Belgium.
Undertaking works is a major step for any homeowner in Belgium. Yet, one question systematically arises during the budget study: how long will the site last? Between theoretical timelines and the reality on the ground, the gap can sometimes surprise newcomers.
This guide details the average durations observed on the Belgian market in 2024-2026 for each work item. Whether you are planning a simple refresh or a heavy renovation, here are the essential temporal benchmarks to organize your project realistically.
Secondary works and decoration are the fastest, but they require incompressible drying times that many owners underestimate.
Replacing utilities is often the most invasive stage, requiring chasing into walls and routing through ceilings.
These rooms are the most complex because they involve almost all trades in a small area.
This is often the most underestimated project. It requires the successive intervention of the demolisher, plumber, electrician, plasterer, tiler, and finally the sanitary installer.
If you keep the current layout, installing the units only takes 2 to 3 days. However, for a complete renovation (new electrical circuits, modified water inlets, new floor), plan for a month of the room being out of use.
The exterior is subject to Belgian weather hazards, making schedules more volatile.
| Type of work | Average surface area | Estimated duration |
|---|---|---|
| Roofing (tiles/slates) | 100 m² | 1 to 3 weeks |
| Façade (render/insulation) | 120 m² | 2 to 4 weeks |
| Window replacement | Whole house | 2 to 4 days |
Note: Exterior façade insulation (ETICS system) requires dry weather conditions and a temperature above 5°C. In Belgium, these works are often suspended between December and February.
For a "turnkey" renovation including demolition, techniques, insulation, and finishes, durations depend directly on the surface area and structural complexity.
Several variables can turn a 3-month renovation into a 6-month site. In Belgium, four factors dominate:
Managing several independent contractors directly is the primary cause of timeline overruns. Using a general contractor like CULA allows for timing optimization through several levers:
Can I stay in my house during a total renovation? For a renovation of more than 50 m², it is strongly discouraged to live on-site. Dust, absence of water or electricity, and noise often extend the duration of the work by 15 to 20% as workers must protect and clean living areas daily.
What is the lead time between the quote and the start of the project? In Belgium, the order books of reputable companies are often filled 3 to 6 months in advance. Anticipate your quote request at least 4 to 5 months before your desired start date.
Is plastering really the stage that blocks everything? Yes. You cannot tile or paint on wet plaster. Depending on ambient humidity and thickness, it takes between 4 and 8 weeks of natural drying. Using construction dehumidifiers can reduce this delay but must be done carefully to avoid cracks.
A successful renovation begins with an honest schedule. While it is tempting to believe promises of work completed in record time, technical reality (drying, safety standards, structural complexity) imposes its own limits. By planning with a 10% safety margin, you will transform a potentially stressful experience into a serene transition to your future home.
Do you have a renovation project in Dilbeek, Bruxelles, or Flemish Brabant? Contact CULA to obtain a precise renovation quote and a realistic schedule for your work.