When is an architect mandatory in Luxembourg?

An OAI architect is mandatory for new buildings over 400m², changes to exterior appearance, change of use, and work in protected areas.

How long to obtain a building permit?

The legal deadline is 3 months for a simple building permit. In practice, expect 4-6 months including back-and-forth. Projects in protected areas may take longer.

How to choose your architect?

Check OAI registration, review past projects, assess style and budget compatibility. Meet several architects before deciding. Feeling and communication are essential.

What does a complete architect mission include?

A complete mission includes: preliminary study, preliminary project, permit file, execution plans, tender documents, site supervision, and works acceptance.

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Architecture in Luxembourg

Looking for an architect in Luxembourg? Whether it's building a new house, major renovation, or extension, hiring an architect ensures a well-thought-out, aesthetic project that complies with Luxembourg regulations.

In Luxembourg, using an OAI-approved architect (Ordre des Architectes et des Ingénieurs-Conseils) is mandatory for projects exceeding 400m² or modifying the building's exterior. On tack.lu, compare quotes from verified architects and receive up to 3 detailed proposals within 24 hours.

Our architecture services

Architectural design
Building permit
Execution plans
Site supervision
Renovation and extension
Interior architecture
Feasibility studies
Energy certification

How does it work?

Find your craftsman in 3 simple steps

Describe your project

Fill out our form in 2 minutes. Specify your architecture needs and your location in Luxembourg.

Receive quotes

Up to 3 verified craftsmen contact you within 24 hours with detailed and personalized quotes.

Choose and realize

Compare offers, discuss with craftsmen, and start your project with confidence.

Why Choose tack.lu?

The leading platform for finding qualified craftsmen in Luxembourg

Custom Design

Unique project adapted to your needs and land

Building Permit

Complete file for permit approval

OAI Architects

Members of the Order of Architects and Consulting Engineers

Site Supervision

Coordination and quality control during construction

Frequently Asked Questions

Everything you need to know about architecture services in Luxembourg

Architect fees typically represent 8-15% of total construction cost. For a complete mission (design to handover), expect 10-12%. A partial mission (design and permit only) costs 5-8%.