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Cabinet VoirinWealth advisoryfor new-build homes
New dressed-stone residence on a tree-lined avenue in western Paris, spring morning

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Paris & West

From western Paris to the residential towns that extend it, new-build is scarce: a few conversions, some rooftop extensions, rare high-end developments. Here the purchase is most often a main home — and a wealth decision in its own right.

Neuilly-sur-Seine · Boulogne-Billancourt · Saint-Cloud · Le Vésinet · 16th & 17th arrondissements

A new-build development to a high standard in western Paris.

A residential West, between Haussmann density and villas

Western Paris is not a uniform area. The tree-lined avenues of Neuilly and the smart districts of the 16th sit on an old, dense fabric, where new-build appears only through a conversion or a rooftop extension. Boulogne, for its part, has absorbed its former industrial land to become one of the most sought-after addresses of the inner suburbs, with a population of families and professionals close to both La Défense and central Paris.

Further west, Saint-Cloud and its hillsides, Le Vésinet and its garden-city spirit offer a greener, quieter setting, prized by settled families who want space without leaving the Paris orbit. These are insiders’ markets, where you buy a neighbourhood and a school as much as a home.

Scarce new-build, structural family demand

The new-build supply of western Paris is constrained by land: few plots, small operations, often from office conversions or infill sites. Set against this is demand from settled families, exacting about quality and outdoor space — a balcony, a terrace or a garden remain rare and enduringly sought-after assets.

  • Few operations, small in size: conversions, rooftop extensions, infill sites.
  • Three- and four-bedroom family homes (T4–T5) much sought after, with demand often outstripping supply.
  • Outdoor space remains a rare and decisive criterion in these areas.
  • The reduced acquisition costs of new-build, against a still-dominant stock of existing property.

The territory in pictures

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When the main home becomes a piece of the estate

In this area, the purchase is often a high-end main home, financed in part by reinvesting a sale or surplus cash. The question is not only ‘which property’, but how to hold it and protect your spouse. Direct ownership of the main home has its own tax logic here — an allowance on its IFI base, a capital gain exempt on resale — which an SCI would lose. These are trade-offs we clarify, and that you settle with your notaire.

A concrete case

New-build residence to a high standard in western Paris, illustrating the type of property referred to in the case.
Illustrative portrait of a self-employed professional, representative of the profile described — non-contractual image, with no link to any real person.
Profile
Self-employed professional, 49, married under a community-property regime, property wealth close to the IFI threshold.
Project
New-build main home (off-plan), Boulogne / Neuilly area, around €1.3m, financed in part by reinvesting cash.
Structure
Direct ownership of the main home; a spousal gift (donation au dernier vivant) to widen the surviving spouse’s options. No SCI, no split ownership on the main home.
−30%

IFI allowance on the main home

art. 973 CGI

Exempt

Capital gain on resale of the main home

art. 150 U, II, 1° CGI

2 to 3%

Acquisition costs on new-build

vs 7 to 8% on existing property

Exempt

Transfer to the spouse on death

art. 796-0 bis CGI

Illustrative case, rounded figures, anonymised situation subject to an adviser’s analysis. The 30% allowance and the capital-gain exemption assume direct ownership of the main home; the exemption under art. 796-0 bis applies to the transfer on death, not to a lifetime spousal gift. The IFI is due only above €1,300,000 of net taxable property wealth (art. 964 CGI). Putting the structure in place is decided with your notaire.

A project in this region?

A wealth study starts from your actual situation: a first structuring outline and the property types suited to this region, followed by a thirty-minute scoping call.

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