Architect-Builders · Paris & Île-de-France
Architect AND builder, under one roof. One single contract — committed price, guaranteed schedule, decennial insurance included.
Fixed Price & Timeline
Contractual guarantee on total price and delivery schedule.
10-Year Defect Coverage
Liability-insurer coverage for structural defects over ten years.
Contractors' All-Risks
TRC insurance during the works.
Milestone payments
No call for funds before a phase is validated.
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. Insurance taken out: professional liability, decennial, contractors' all-risks.
50+
Projects delivered by the agency
4.9/5
26 reviews on Google & Houzz
15,000
m² developed
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
Vitrine, parcours client, éclairage, réserve : ce que la conception d'un point de vente fait au taux de transformation — et pourquoi la façade se dépose en premier, jamais en dernier.
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
RC pro, décennale, all-risks
Design signed by an architect registered with the Order
ISO 19650 method
Final completion warranty
Schedule commitment
Milestone payments
Client portal
Included in every project — at no extra cost.
Phase-by-phase planning
Dated milestones, real progress, delays flagged.
Site journal
An illustrated account, published visit after visit.
Material approval
Approve or reject each proposal in one click.
Your contracts, in one place
Contracts are made available to you in the space, read-only.
Verified Client Reviews
Only authentic feedback — verified on Google and Houzz.
« Nous avons fait aménager entièrement un local professionnel neuf qi n'avait aucune cloison intérieure. La directrice de l'agence Mme Mercado, l'architecte M. Ruiz Pinto et leur… »
Clinique Vétérinaire Univet COLOMBES-ZOEVIA
« Nous avons racheté des parties communes dans mon immeuble. Alexis m'a accompagné de bout en bout sur notre projet d'extension d'appartement dont les démarches à réaliser avec le… »
Barbero
Houzz
« Nous avons racheté des parties communes dans mon immeuble. Alexis m'a accompagné de bout en bout sur notre projet d'extension d'appartement dont les démarches à réaliser avec le… »
Laurent Barbero
Start my project
5 fields, 60 seconds. One of our architects calls you back by Wednesday 21 October at the latest.
Fixed Price & Timeline
10-Year Defect Coverage
Contractors' All-Risks
Milestone payments
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