Cut the cost of your home projects with Luxembourg grants

Using the platform end to end

Start from the trade you need or from the search field, describe the work in your own words and add the dimensions, photos and access details you already have. A request that states what exists today, what you want changed and when you would like the work done lets companies answer with a comparable price rather than a placeholder. You can also browse the directory first and contact a specific company if you already have one in mind.

Once requests go out, keep the exchange in one place: note site visits, agreed variations and any documents received. When quotes come back, compare the scope line by line before comparing totals, since differences in preparation, materials and waste removal explain most price gaps. Guides on this site cover each trade, the aid available through Klimabonus Wunnen and the questions worth asking before you sign.

The idea: one request, several qualified companies

Vert.lu connects homeowners, co-owners and landlords in Luxembourg with authorised craft companies organised by trade and area of activity. You describe your project once — the work you need, the type of property, your preferred timing — and the request is passed on to the companies in our directory whose trade and coverage area match. Those who are available then contact you directly to arrange a visit and prepare a quote.

The service is free and non-binding for homeowners. You remain free to compare several quotes, negotiate the terms, or drop the project at any point. No company is imposed on you: you choose the one that suits you based on the quotes received and the contact established.

The steps, from project to site work

You submit your request in a few minutes from a page dedicated to your project — solar, heat pump, insulation, roofing, electrical work, sanitary installations, or another trade. The request is then routed to the matching companies in our directory, which decide themselves whether and when to get in touch depending on their availability and workload.

An interested company contacts you to clarify the project, sometimes by phone, sometimes by arranging an on-site technical visit when the work requires it. It then sends you a written quote. You may receive several proposals: it is up to you to compare them and choose the one that best fits your needs, budget and schedule.

Who the service is for

Vert.lu is aimed at owner-occupiers renovating or equipping their home, co-owners who need work carried out on common areas or their own unit, and landlords maintaining or improving a rented property. Needs differ by profile: a landlord often looks for a company that can act quickly with minimal disruption to the tenant, while an owner-occupier usually plans the work over several weeks.

The service covers both large projects, such as a full energy renovation, and smaller one-off jobs: replacing a boiler, repairing a roof, or installing a socket for an electric vehicle.

Trades covered

The directory includes companies active in energy and heating, insulation, roofing and facades, joinery, electrical work, masonry, sanitary installations, garden work and small jobs. Each company profile states the activities carried out and the geographic area covered, which allows your request to be directed to professionals genuinely relevant to your project rather than to a generic list.

Klimabonus Wunnen in a renovation project

Many energy renovation projects — insulation, heating replacement, solar panels, home batteries — can be supported by Klimabonus Wunnen, which replaced the former PRIMe House programme in 2022. Eligibility conditions and procedures vary depending on the type of work and the type of housing involved. The order in which work is carried out also affects which subsidies apply and how equipment should be sized.

The amounts, caps and conditions in force at the time of your application are published by the administration on guichet.lu, which is the reference to consult before starting a file. An independent energy advisory session with Klima-Agence also helps clarify how the different parts of a project fit together before requesting quotes.

A good quote and verified company data

A complete quote specifies exactly what work will be done, the materials or equipment chosen with brand and model, labour, administrative steps included, deadlines, warranties and the VAT rate applied. Comparing quotes requires checking that they cover the same scope: an apparently lower price that excludes waste removal or commissioning is not necessarily the better deal.

The information shown on vert.lu company profiles comes from the public registers available in Luxembourg and from data provided by the companies themselves when they register in the directory. We ask every professional to keep their profile up to date and review any inconsistencies reported, without replacing the official registers, which remain the reference source in case of doubt about a business authorisation.

Preparing your project before contacting companies

The clearer your request, the more precise the answers you receive. Before contacting companies, note the type of building, its approximate year of construction, the surface concerned, the current heating or insulation situation and the outcome you are looking for: reducing consumption, replacing ageing equipment, improving comfort in summer, or simply bringing an installation up to date. Photographs of the existing situation, previous energy bills and any earlier study or audit help a professional judge the scope without a first visit.

It is also worth deciding early which parts of the project are firm and which remain open. A homeowner who knows the roof must be re-insulated but hesitates between two heating solutions can ask for variants in the same quote, which is easier to compare than two documents drawn up months apart. Mentioning your expected timing matters too: some trades in Luxembourg are booked several months ahead, and a realistic planning discussion avoids disappointment once the decision is taken.

Finally, keep a written trace of every exchange. Requests for subsidies, technical choices and agreed deadlines are easier to defend later when the file contains dated documents rather than verbal agreements. This is also what makes an application for Klimabonus Wunnen straightforward, since eligibility is assessed on documents describing the work actually carried out.