Haussmannian apartments: what to keep, what to reinvent
A haussmannian apartment renovation is one of the most rewarding and demanding projects in residential interior design in Paris. These apartments, defined by their ceiling heights of 2.8 to 3.5 metres, their moldings and cornices, their herringbone parquet flooring, and their elegant parisian apartment proportions, are extraordinary architectural inheritances. They are also old buildings with old systems, and renovating them requires a precise understanding of what makes a haussmannian apartment irreplaceable, and what can be reinvented without loss.
Baron Haussmann's renovation of Paris between 1853 and 1870 under Napoleon III produced the most enduring residential architecture in the city. The haussmannian apartments that line the grand boulevards, from Saint-Germain to the arrondissements of the Right Bank, define what Paris looks and feels like to live in. But they are not museum pieces. They need modern kitchens, contemporary bathrooms, updated electrical and plumbing systems, and layouts that serve how people actually live today. The haussmannian apartment renovation challenge is knowing which features are sacred, which are optional, and which are actively harming the quality of life inside the apartment.
At Yasmine B Design, a bilingual interior design studio based in Saint-Germain-des-Pres in Paris, haussmannian apartment renovation is one of our deepest areas of expertise. We work on these projects from focused decoration briefs to complete restructuring renovations that rethink the layout while honouring the bones. This guide covers what to keep, what to reinvent, what the renovation costs look like, and how to navigate the local regulations that govern renovation work in Paris haussmannian buildings.
What defines a haussmannian apartment
The architectural features that make it what it is
Haussmannian architecture is defined by a specific set of features that appear consistently across the apartment buildings of the grand renovation of Paris. The ceiling height is the most important. Haussmannian apartments have ceiling heights ranging from 2.8 metres on the upper floors to 3.5 metres and above on the principal floors. This height defines the proportions of every room and creates the sense of grandeur that makes a parisian apartment feel genuinely Parisian. Any renovation that compromises this ceiling height, by installing a dropped ceiling for mechanical services or insulation, destroys the most defining architectural feature the apartment possesses.
The moldings and cornices are the second defining feature. The ceiling corniche, the door surrounds, the window architraves, the ceiling rose: these create the visual rhythm that makes haussmannian rooms feel composed. Restoring damaged moldings is one of the most impactful and cost-effective interventions in any haussmannian apartment renovation. Removing them to achieve a modern aesthetic produces rooms that feel stripped rather than contemporary.
The herringbone parquet is the third essential feature. Original herringbone parquet flooring in a haussmannian apartment is a material of extraordinary quality, old-growth oak laid at a density that modern parquet cannot replicate. Restoring original parquet is always preferable to replacing it. When replacement is unavoidable, sourcing reclaimed herringbone parquet of equivalent quality and character is the most sensitive option. Parquet flooring restoration typically costs 30 to 50% less than full replacement for an equivalent quality outcome.
The natural light conditions are the fourth. Haussmannian buildings were designed to maximise natural light through tall windows and layouts oriented to both the street and the courtyard. Understanding how to read a floor plan for light and orientation is the first step in any haussmannian renovation.
What to keep in a haussmannian apartment renovation
The bones that define the space
The ceiling height must be preserved. No insulation requirement, no mechanical system, no contemporary design preference justifies dropping the ceiling of a principal room in a haussmannian apartment. Slim-line heating and cooling systems, underfloor heating, and perimeter heating at skirting level are the engineering solutions, not a dropped ceiling that eliminates the most irreplaceable feature of the space.
The moldings should be preserved and restored wherever possible. They are not period ornament. They are structural elements of the visual composition of the room. The most successful contemporary renovations of haussmannian apartments introduce modern design within the molding language, rather than erasing it.
The original parquet flooring should be restored rather than replaced. A professional parquet restoration produces a floor that is more beautiful and more durable than a new laying of equivalent quality, and at lower renovation costs. Materials of this age and density are irreplaceable.
The windows must be preserved in form and profile. In most Paris arrondissements, modifications to the windows of haussmannian buildings require authorisation from the local mairie, and in classified haussmannian streetscapes, local regulations may prohibit alterations entirely.
What to reinvent: where contemporary life requires change
The kitchen in almost every haussmannian apartment is the first candidate for reinvention. These kitchens were designed for domestic staff, isolated at the rear of the apartment, separated from the reception rooms by a service hierarchy that no longer exists. Modernising the kitchen space, opening it to the dining room, relocating it within the available footprint, or completely remodeling it with modern materials and storage, is the most justified and most common renovation intervention.
The bathrooms are the second area for reinvention. Haussmannian apartments typically have limited bathroom provision, often one salle de bain and one toilette for a five or six-room apartment. Creating additional bathrooms, modernizing existing ones, and installing contemporary plumbing and marble fittings is a renovation necessity that does not compromise the architectural character of the apartment.
The electrical systems in most haussmannian apartments require complete replacement, old wiring, inadequate earthing, insufficient circuit capacity. This is a renovation cost that cannot be avoided. An experienced renovation company in Paris will always include a full electrical audit in the scope.
The heating systems are similarly due for reinvention. Old collective heating systems (chauffage collectif) are being replaced with individual systems that give owners control over their comfort and energy consumption. Underfloor heating in kitchens and bathrooms is both more efficient and more elegant than radiator-based systems in these spaces.
The haussmannian renovation process in Paris
Local regulations and co-ownership requirements
A haussmannian apartment renovation in Paris involves navigating a complex regulatory environment. The building is typically in co-ownership (copropriete), governed by a syndic and a reglement de copropriete. Structural changes, facade modifications, alterations to shared services, all require co-ownership approval processes that can take weeks or months. Beyond the co-ownership, the Paris mairie may require a Declaration Prealable de Travaux or a Permis de Construire for works affecting the exterior appearance, the floor area, or the structure. An interior architect experienced in haussmannian apartment renovation in Paris manages this administrative process as a core part of the project. This is what interior architecture vs interior design means in practice: the technical and legal layer that protects the project.
Renovation costs and timeline
The cost of a haussmannian apartment renovation in Paris varies significantly with scope, arrondissement, and finish level. A focused decoration and modernisation project for a 100 square metre apartment typically runs from 150,000 to 250,000 euros. A complete restructuring renovation for the same apartment might run from 300,000 to 500,000 euros or more, depending on scope, materials, and finish level.
These renovation costs represent a significant investment. In the context of Paris real estate, they consistently produce a positive return. A beautifully renovated haussmannian apartment commands a price premium at sale and a yield premium in the rental market.
The timeline for a serious haussmannian apartment renovation runs from 8 to 18 months from brief to handover, depending on scope and the complexity of the co-ownership approval process.
Common questions about haussmannian apartment renovation
What defines a haussmannian apartment? A haussmannian apartment is defined by its ceiling height (typically 2.8 to 3.5 metres), its moldings and cornices, its herringbone parquet flooring, its tall casement windows, and its characteristic floor plan. These buildings were constructed between 1853 and 1870 as part of Baron Haussmann's renovation of Paris under Napoleon III, and they remain the most sought-after residential real estate in the city.
What should be preserved in a haussmannian apartment renovation? The ceiling height, the moldings and cornices, the original parquet flooring, and the window profiles. These are the architectural features that define the character of the apartment and cannot be restored once removed. Everything else, the kitchen, the bathrooms, the electrical and plumbing systems, the heating, the internal materials and finishes, can and often should be reinvented for contemporary life.
What are the local regulations for haussmannian renovations in Paris? Any structural modification, facade alteration, or change to shared services requires co-ownership approval. Depending on scope, a Declaration Prealable or a Permis de Construire from the mairie may also be required. In classified haussmannian streetscapes, heritage protection rules impose additional constraints.
How much does a haussmannian apartment renovation cost in Paris? A focused decoration and modernisation project for a 100 square metre apartment typically runs from 150,000 to 250,000 euros. A complete restructuring renovation runs from 300,000 to 500,000 euros or more.
How to find a good renovation company in Paris for a haussmannian apartment? Look for a studio or interior architect with documented experience of haussmannian renovation projects, not generic contractors who may lack knowledge of co-ownership regulations, heritage constraints, and the technical demands of old Parisian building fabric. Ask for references from completed haussmannian projects, and choose a studio that manages the administrative and permit process as part of its service.
An architectural inheritance
A haussmannian apartment is an architectural inheritance. The renovation that honours it, preserving the ceiling height, restoring the moldings, bringing the herringbone parquet back to life, while remodeling the kitchen and bathrooms, replacing the systems, and introducing contemporary materials and design within the historic framework, produces the most enduring and most valuable result.
At Yasmine B Design, haussmannian apartment renovation is one of the practices we know most deeply. Our studio on the Rue de Rennes in Saint-Germain is itself housed in a haussmannian building. The projects we are proudest of are the ones where we handed back an apartment that feels both entirely contemporary and entirely Parisian, because it honours what the building is, while being designed for the life being lived inside it.
Ready to begin? Send the team a message at yb@yasmineb.design, or follow the studio on Instagram and explore the blog for inspiration and insights from the heart of Paris. The conversation and the transformation starts here.