Architect-Builders · Paris & Île-de-France
Architect AND builder, under one roof. One single contract — committed price, guaranteed schedule, decennial insurance included.
Our contractual commitments
Guaranteed fixed price
Contractual budget locked from signing. No surcharge beyond approved change orders.
Schedule under control
Contractually committed timeline, design and execution within one team.
One single point of contact
Architect + builder united. End-to-end accountability, design through delivery.
10-year warranty
Decennial, biennial and final completion warranties included. Single project insurance policy.
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Projects delivered
5/5
21 verified reviews on Google & Houzz
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Years of experience
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Design outsourced to partners
Portfolio
The studio
Xiléades brings together under one roof the expertise of an architect and the craftsmanship of a builder. True to the Design + Build approach, this dual capability lets us steward every project from A to Z: design, budget, schedule and quality.
Committed to an eco-responsible approach, we favour durable materials, energy performance and the wellbeing of occupants.
Design and project management for every type of project.
A single point of contact from permit to handover.
Thermal performance with respect for heritage.
Journal · Featured
Depuis janvier 2025, toutes les copropriétés de plus de 15 ans doivent voter un PPPT. Au cœur du dispositif, le Diagnostic Technique Global : ce qu'il est, ce qu'il n'est pas, et pourquoi sa qualité conditionne dix ans de pilotage patrimonial.
Read articleSectors we serve
Each sector has its own regulatory constraints, uses and requirements. Discover our solutions.
They trust us
"Architectureisthelearned,correctandmagnificentplayofvolumesassembledunderlight."
Le Corbusier, Architect
Construction-defects insurance included
Architects registered with the Order
ISO 19650 method
Final completion warranty
Schedule commitment
Financial guarantee
Verified Client Reviews
Only authentic feedback — verified on Google and Houzz.
Project decoder
4 minutes. 6 questions. A personal reply from Hélène or Alexis within 24 working hours.
Why 4 minutes instead of a contact form?
Because the person who calls you back is not a salesperson — it is the architect who will draw your project. We want to understand before we propose a meeting, not the reverse.
We answer personally within 24 working hours. Phone, short video call, or voice note — your choice.
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