Major Renovation in Paris: Transforming Apartments and Commercial Spaces with a General Contractor
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Renovating a property in Paris can take many forms. Some projects require only cosmetic updates, such as repainting or modernizing a kitchen. Others involve a far more extensive transformation of the space. This is what is known as a major renovation.
In a city where much of the housing stock dates back to the 19th and early 20th centuries, major renovation projects are common. Haussmannian apartments, period buildings and commercial spaces often require full restructuring to meet contemporary needs. Reconfiguring layouts, opening load-bearing walls, upgrading technical systems, or creating new living areas — these types of projects demand both technical expertise and precise coordination across multiple trades.
This is where working with a general contractor (all trades / full-service renovation company) becomes essential. By centralizing project management and coordinating all trades, a general contractor ensures a smooth process while maintaining a high level of execution quality.
Specializing in major renovation projects in Paris, Costaud Rénovation supports both private and professional clients in the complete transformation of their spaces — whether it’s a Haussmannian apartment, a loft, or a commercial property.
What Is Considered a Major Renovation?
A major renovation refers to extensive construction work that significantly alters both the layout and the technical infrastructure of a property. Unlike light renovation or cosmetic upgrades, it typically involves interventions on the building structure and core systems. A major renovation may include:
demolition of existing partitions
reconfiguration of room layouts
opening or creating openings in load-bearing walls
full electrical and plumbing upgrades
bringing installations up to current standards
complete renovation of floors, walls and ceilings
creation of kitchens and bathrooms
integration of bespoke joinery
In some cases, it may also involve:
full transformation of an older apartment
restructuring an empty or raw space
complete renovation of a commercial or office space
modernizing a Haussmannian apartment while preserving its architectural character
These projects require a holistic approach, where every intervention is carefully coordinated within the overall design and structure.
The Specific Challenges of Major Renovation in Paris
Renovating in Paris comes with unique constraints related to the building heritage, co-ownership regulations, and site logistics.
Parisian Period Buildings
Many apartments in Paris are located in buildings constructed before 1940. These structures often feature:
mixed wood and masonry frameworks
original timber floors
load-bearing walls in stone or brick
outdated technical systems
A detailed technical assessment is often required to anticipate structural and technical constraints.
Co-Ownership Regulations
In Paris, certain works require approval from the building’s co-ownership (HOA).
This typically includes:
opening load-bearing walls
structural modifications
works affecting common areas
interventions on shared systems
A major renovation project must therefore be designed with these regulatory requirements in mind.
Site Constraints
Construction work in Paris also involves logistical challenges:
limited access to buildings
narrow staircases
absence of elevators in some properties
management of deliveries and debris removal
Careful planning and coordination are essential to ensure a smooth construction process.
The Key Stages of a Major Renovation Project
A major renovation in Paris typically follows several structured phases.
Project Study and Analysis
The first step involves assessing the existing property and the client’s needs.
This phase includes:
site measurements and technical survey
structural assessment
identification of constraints
budget and timeline estimation
This analysis forms the foundation of the project.
Design and Planning
Once the main direction is defined, layout plans are developed. This phase includes:
space planning and layout design
material selection
preparation of the construction schedule
Coordination between trades is anticipated from this stage.
Demolition and Structural Work
The project usually begins with removing existing elements:
demolition of partitions
removal of finishes
stripping out technical systems
Structural work may also include:
opening load-bearing walls
reinforcing structures
creating new openings
These operations require precise technical expertise.
Technical Systems Installation
Once the structure is ready, technical systems are installed:
electrical systems
plumbing
ventilation
heating or air conditioning if required
These systems form the foundation of comfort and safety.
Interior Fit-Out
This stage focuses on rebuilding and organizing the space:
installation of new partitions
bespoke joinery
flooring and wall finishes
installation of kitchens and bathrooms
This is when the project truly takes shape.
Finishing
The final phase includes:
painting
lighting installation
joinery adjustments
installation of equipment
These details are essential to the overall quality of the project.
Planning a Major Renovation in Paris?
Every project comes with its own technical and regulatory challenges. Costaud Rénovation supports clients from the earliest stages, helping assess feasibility and define the most appropriate solutions.
Why Work with a General Contractor for a Major Renovation?
A major renovation project involves multiple trades, including:
masonry
plumbing
electrical work
carpentry and joinery
painting
finishes
sometimes metalwork or custom fabrication
Coordinating all these professionals can be complex. Working with a general contractor in Paris offers several advantages.
A Single Point of Contact
Simplifies communication and decision-making throughout the project.
Optimized Coordination
Ensures that each trade intervenes at the right time, avoiding delays.
Management of Unexpected Issues
Experienced contractors can anticipate and resolve on-site challenges.
Consistent Quality
Centralized management ensures coherence in execution and finishing.
Major Renovation of a Haussmannian Apartment
Haussmannian apartments are among the most iconic renovation projects in Paris. They often feature:
generous volumes
original mouldings and architectural details
parquet flooring
high ceilings
A major renovation allows these spaces to be modernized while preserving their character. Typical interventions include:
opening kitchens onto living areas
creating additional bathrooms
integrating bespoke storage
restoring original features
The goal is to strike a balance between architectural heritage and contemporary living.
→ Contact Costaud Rénovation for a quote
Major Renovation of Commercial and Office Spaces
Major renovation projects are not limited to residential properties. Many commercial and professional spaces also require complete transformation. Key considerations may include:
compliance with public access regulations
optimizing customer flow
creating functional technical areas
designing welcoming retail or reception spaces
Efficient coordination is essential to meet opening deadlines.
What Is the Cost of a Major Renovation in Paris?
The cost of a major renovation depends on several factors:
property size
structural complexity
quality of materials
level of finish
bespoke joinery
technical constraints
Each project is unique, and a tailored study is required to provide an accurate estimate.
Your Major Renovation Project in Paris
Transforming a period apartment, restructuring a raw space or fully renovating a commercial property requires both technical expertise and precise coordination. With extensive experience in major renovation projects in Paris, Costaud Rénovation supports clients throughout the entire process — from initial study to final completion. By coordinating all trades, the company ensures a controlled construction process and a high level of execution.
Planning a full renovation in Paris? Contact Costaud Rénovation to discuss your project and explore the full potential of your property.
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