Window replacement budget: build a verifiable estimate
Published on 31 July 2026 · Verified on 18 September 2026 · The Mestravaux.lu team
We have no dataset of dated, comparable quotes supporting a Luxembourg average. Start from actual openings and the required result. This method prepares pricing without turning assumptions into market prices.
The essentials in 30 seconds
- List openings and priorities.
- Add shared work to supply and fitting costs.
- Separate confirmed budget, options and unknown items.
Build the starting scope
List windows, French doors and large glazed units separately with references, indicative dimensions and known condition. Note priorities: repair, comfort, operation or appearance. Price a suitable solution rather than multiplying a standard unit price.
| Matériau | Fenêtre standard 2 vantaux | Grande baie / coulissante | Uw typique |
|---|---|---|---|
| PVC | 450 – 900 € | 800 – 1 600 € | 1,0 – 1,3 W/m²K |
| Aluminium | 700 – 1 400 € | 2 000 – 3 500 € | 1,0 – 1,2 W/m²K |
| Mixte bois-alu | 900 – 1 200 € | 1 800 – 2 500 € | 0,8 – 1,0 W/m²K |
Fourchettes indicatives pour une pose en rénovation en Uw. La dépose totale de l'ancienne fenêtre ajoute 15 à 25 %.
Add spending around the product
Group access, possible lifting, protection, removal, disposal and finishes. Specify thresholds, sills, shutters and façade junctions. Identify items already included per opening to avoid double counting and work needing another contractor.
Compare grouped and staged work
If funding requires stages, request variants including mobilisation, protection and rework. Check ventilation and insulation coherence between phases. Assume neither automatic volume discounts nor unchanged costs when splitting the project.
Your project deserves an accurate estimate — it's free.
Request a quotePrepare financing and decisions
Guichet distinguishes grant routes by renovation scope. Check the applicable route before counting support. Separate gross total, selected options, confirmed support and payment schedule. List unknown amounts and ask what will establish them.
Related guides to continue
- PVC, aluminium or timber-aluminium windows: compare proposed systemsVisible material does not describe the whole window. Compare profile sections, performance data and maintenance requirements for the actual models. This guide assigns no unsupported ranking for average price, lifespan or property resale value.Read the guide
- Double or triple glazing: compare variants for your homePane count alone cannot select a window. Request identified variants and compare performance and cost within the same project. No average premium or payback is claimed without verifiable offers.Read the guide
- Window Klimabonus: prepare the application and check the rateWindow replacement may qualify under Klimabonus 2026 conditions. Pane count or an eligible label is insufficient. Prepare the application before work and confirm the regime matching your circumstances.Read the guide
- Understand a window quote: product, work and exclusionsFirst check whether offers describe the same openings and finished result. This guide provides a comparison method, not average prices or a legal contract template.Read the guide
Frequently asked questions
What initial price per window should I use?
Request an estimate for a described scope. No verified standard amount is available here.
Can material alone rank prices?
Compare dimensions, opening, glazing, fitting and finish too. A material name alone does not define the same product.
How can I measure an option’s premium?
Request variants changing only relevant features and identify additional services.
Is the post-grant total enough for financing?
Check payment dates and grant timing. Final net spending does not necessarily show what must be advanced.
Take action
Your project deserves an accurate estimate — it's free.
Request a quote