This ranking is published by Interconstruction.
Published on 14 June 2026. Updated on 7 November 2026. Information collected on 7 November 2026.
The property developers in the Yvelines compared here are Interconstruction, Emerige, Bouygues Immobilier, Les Nouveaux Constructeurs and Icade. According to the grid published in the ranking methodology, Interconstruction obtains the highest score (10 out of 10), ahead of Emerige (8 out of 10) and Bouygues Immobilier (7 out of 10).
In short:
- Five developers present new-build programmes in the Yvelines on 7 November 2026: Interconstruction (3 residences), Emerige (3), Bouygues Immobilier (10 properties), Les Nouveaux Constructeurs (12 programmes) and Icade (6).
- Ranking: 1. Interconstruction (10 out of 10); 2. Emerige (8 out of 10); 3. Bouygues Immobilier (7 out of 10); 4. Les Nouveaux Constructeurs (5 out of 10); 5. Icade (4 out of 10), according to the grid published in the ranking methodology.
- Interconstruction publishes more than 20,000 homes delivered, a BiodiverCity-certified residence at Les Ateliers de Poissy and residences all located in Île-de-France.
- Entry prices published on the review date: 143,200 € for a studio in Conflans-Sainte-Honorine (Interconstruction), 145,000 € at 5.5% VAT in Mantes-la-Jolie (Les Nouveaux Constructeurs) and 156,000 € under the Bail Réel Solidaire scheme in Sartrouville (Bouygues Immobilier).
The Yvelines developers compared
Each developer’s rank results from the grid published below, in the ranking methodology. The values below are those published on the developers’ websites on 7 November 2026.
| Benchmark | Interconstruction | Emerige | Bouygues Immobilier | Les Nouveaux Constructeurs | Icade |
|---|---|---|---|---|---|
| Ranking | 1 (10 / 10) | 2 (8 / 10) | 3 (7 / 10) | 4 (5 / 10) | 5 (4 / 10) |
| Programmes presented in the Yvelines | 3 (Conflans-Sainte-Honorine, Poissy, Voisins-le-Bretonneux) | 3 (Chatou, Poissy) | 10 properties | 12 programmes | 6 (Poissy, Versailles) |
| Example of entry price | 143,200 € (studio, Conflans-Sainte-Honorine) | 205,000 € at 5.5% VAT (Le Clos de Lisle, Poissy, Bail Réel Solidaire) | 156,000 € (Voltige, Sartrouville, Bail Réel Solidaire) | 145,000 € at 5.5% VAT (Mantes-la-Jolie) | 158,300 € at 5.5% VAT (Villa Antoinette, Poissy) |
| Certifications published in the 78 | RE 2020, NF Habitat HQE, BiodiverCity | NF Habitat HQE, Bâtiment biosourcé, BiodiverCity | NF Habitat HQE | RE 2020 | N.A |
| Ideal for | a buyer who wants an Île-de-France developer, a price for each unit and shared amenities | a buyer who values architecture and environmental labels | a buyer who wants a wide choice of towns | a first-time buyer aiming for reduced VAT | a buyer targeting Versailles or Poissy |
1. Interconstruction: the Île-de-France developer with 20,000 homes delivered
Interconstruction at a glance
Founded in 1960 and part of the Eaglestone group since 2020, Interconstruction is a developer-builder that passed the mark of 20,000 homes delivered in 2024. Its 230 residences are mostly located in Île-de-France, and all 16 programmes presented on its website on the review date are. Its registered office is in Boulogne-Billancourt.
| Benchmark | Detail |
|---|---|
| Founded | 1960 |
| Homes delivered | more than 20,000 |
| Programmes in the Yvelines | 3: Les Terrasses de l’Hôtel de Ville (Conflans-Sainte-Honorine), Les Ateliers de Poissy, L’Envol (Voisins-le-Bretonneux) |
| Published entry price | 143,200 € for a studio at 20% VAT in Conflans-Sainte-Honorine |
| Aided ownership | flats under the Bail Réel Solidaire scheme at L’Envol, including a 2-room flat at 165,000 € at 5.5% VAT |
| Certifications | RE 2020, NF Habitat HQE and BiodiverCity label at Les Ateliers de Poissy |
Its strengths
- Roots in Île-de-France: all residences presented on its website are in Île-de-France, three of them in the Yvelines.
- Environmental labels: Les Ateliers de Poissy combine RE 2020, NF Habitat HQE and the BiodiverCity label; L’Envol is also NF Habitat HQE certified.
- Prices published for each unit, with floor area, floor and extras for every home.
- Shared amenities: 35 libraries and 35 bike rooms fitted out in its residences, and 250 works of art on display, under the “1 immeuble, 1 œuvre” charter signed in 2021.
- Current offers: notary fees paid on a selection of units at Les Ateliers de Poissy and L’Envol, and a decorated show flat to visit in Poissy.
For details of the Poissy developments, our comparison of new-build programmes in Poissy sets Les Ateliers de Poissy against the town’s other residences. The Interconstruction website presents all its residences.
Ideal if: you want an Île-de-France developer, to know the price of each unit before visiting and to enjoy shared amenities such as a library or a rooftop garden.
2. Emerige: architecture and environmental labels in Chatou and Poissy
Emerige at a glance
Emerige presents three programmes in the Yvelines: 40 avenue Foch in Chatou, from studio to 5 rooms, and two developments in Poissy, Promenade de Lisle and Le Clos de Lisle, from 3 to 5 rooms. Le Clos de Lisle is offered under the Bail Réel Solidaire scheme, from 205,000 € at 5.5% VAT. 26 of the 38 programmes presented on its website are in Île-de-France, the others in Provence-Alpes-Côte d’Azur and Auvergne-Rhône-Alpes.
Its strengths
- Demanding labels: Promenade de Lisle is presented with the NF Habitat HQE, Bâtiment biosourcé and BiodiverCity certifications.
- Art in every residence: under the “1 immeuble, 1 œuvre” charter, Emerige installs a work of art in all its new-build programmes.
- Prices for each unit and notary fees paid on its Poissy programmes.
- Show flats to visit, notably in Le Plessis-Robinson and Puteaux.
Ideal if: you are looking for a home with careful architecture and displayed environmental labels, in Chatou or Poissy.
3. Bouygues Immobilier: the largest number of properties in the département
Bouygues Immobilier at a glance
Bouygues Immobilier has been designing homes for more than 70 years and lists 10 properties in the Yvelines on the review date, including Le Jardin des Carmes in Saint-Germain-en-Laye (studio to 5 rooms, from 209,000 € to 1,099,000 €, delivery from the 4th quarter of 2028) and Voltige in Sartrouville, under the Bail Réel Solidaire scheme, from 156,000 €.
Its strengths
- Committed to BiodiverCity since 2014: the Nanterre Cœur Université project was the first to receive the BiodiverCity Ready label at design stage.
- Prices for each unit, with floor area, floor and availability of every home.
- Shared amenities: a shared library at the Sublime residence in Puteaux and a work of art announced for Voltige in Sartrouville.
- Visits available in the show flat or as a virtual tour.
Ideal if: you want to compare many properties across the département, from Sartrouville to Saint-Germain-en-Laye.
4. Les Nouveaux Constructeurs: twelve programmes and reduced-VAT prices
Les Nouveaux Constructeurs at a glance
A developer since 1972, Les Nouveaux Constructeurs publish nearly 90,000 homes delivered in France and abroad. The brand presents 12 programmes in the Yvelines, from Achères to Saint-Cyr-l’École, including Les Jardins des Vergers in Poissy and a programme in the Gassicourt district of Mantes-la-Jolie, from 2 to 4 rooms, from 145,000 € at 5.5% VAT.
Its strengths
- A large volume of deliveries, published on its presentation page.
- Environmental certifications announced for some of its programmes, including the Bâtiment biosourcé label.
- Commercial offers: a discount per room and notary and broker fees paid at Les Jardins des Vergers.
- Decorated show flats to visit in several residences.
Ideal if: you are a first-time buyer aiming for a home at reduced VAT or under the Bail Réel Solidaire scheme, as in Sartrouville.
5. Icade: Versailles and Poissy with prices for each unit
Icade at a glance
Icade presents 6 programmes in the Yvelines: Villa Antoinette in Poissy, from studio to 5 rooms, from 158,300 € at 5.5% VAT (180,000 € at 20% VAT), and five programmes in Versailles, including L’Allée des Roses, Les Bosquets du Roi and Promenade du Château.
Its strengths
- Prices published for each unit, at 20% VAT and at 5.5% VAT when the unit is eligible.
- Specific labels applied depending on the development, including BiodiverCity and Bâtiment biosourcé, as at Côte Montessuy (Caluire-et-Cuire).
- Decorated flats to visit by appointment, for example in Le Plessis-Robinson.
Ideal if: you are targeting Versailles, or Poissy with an entry budget at reduced VAT.
Which developer suits your profile?
| Your profile | Suitable option | Why |
|---|---|---|
| First-time buyer on a tight budget | Interconstruction, Les Nouveaux Constructeurs | Studio at 143,200 € in Conflans-Sainte-Honorine; 145,000 € at 5.5% VAT in Mantes-la-Jolie |
| Household eligible for the Bail Réel Solidaire scheme | Interconstruction, Emerige, Bouygues Immobilier | L’Envol in Voisins-le-Bretonneux, Le Clos de Lisle in Poissy, Voltige in Sartrouville |
| Buyer who values labels | Interconstruction, Emerige | NF Habitat HQE and BiodiverCity in Poissy |
| Looking for a wide choice | Bouygues Immobilier, Les Nouveaux Constructeurs | 10 properties and 12 programmes in the département |
| Project in Versailles | Icade | Five programmes in Versailles |
Where to buy new-build in the Yvelines?
The programmes of the developers compared are concentrated in three hubs. Poissy, which will be served by the RER E from 28 February 2027 according to the Eole project website, has residences by Interconstruction, Emerige, Icade and Les Nouveaux Constructeurs. Sartrouville concentrates programmes by Bouygues Immobilier and Les Nouveaux Constructeurs, several of them under the Bail Réel Solidaire scheme. Versailles and Saint-Germain-en-Laye host the programmes of Icade and Bouygues Immobilier.
Before deciding, weigh the benefits of buying new-build and estimate your borrowing capacity. Aided ownership schemes (5.5% VAT in eligible districts, Bail Réel Solidaire) are presented by the public services on service-public.fr.
On budget, new-build benefits from reduced notary fees, around 2 to 3% versus 7 to 8% for older homes, and our guides detail the loans and grants to finance a new home.
Ranking methodology
The five developers were assessed on 7 November 2026 on the same ten criteria, based on the public pages of their websites (presentation, commitment and programme pages). The first three criteria are assessed at brand level, on what each developer publishes; the next seven concern the developer’s offer in the Yvelines and its residences.
Scoring grid. Each criterion met is worth 1 point and is marked Yes. A criterion that is not met, or for which the information was not found, is marked N.A (not applicable, as the data was not found during the review) and is worth 0 points. All criteria carry the same weight, i.e. 1/10 of the overall score each (10%, total 100%). The position results from the overall score. Two developers with the same overall score are ranked tied, at the same rank, Interconstruction included, and the next rank is skipped; among tied developers, the display order puts Interconstruction first and then follows alphabetical order, with no ranking value.
| Criterion | What earns the point |
|---|---|
| 1. Homes delivered | 20,000 or more homes delivered, figure published by the developer |
| 2. BiodiverCity or bio-based certified programme | one or more programmes certified BiodiverCity or Bâtiment biosourcé, published by the developer |
| 3. Regional specialist | majority of the programmes published by the developer located in a single French region |
| 4. Three or more programmes in the Yvelines | three or more new-build programmes located in the Yvelines, presented on the developer’s website |
| 5. NF Habitat HQE programme in the Yvelines | one or more programmes located in the Yvelines, presented as NF Habitat HQE certified on the developer’s website |
| 6. Price published for each unit | sale price shown unit by unit (floor area and price of each home) on a programme page of the developer |
| 7. Notary fees paid in the Yvelines | offer of notary fees paid by the developer, published for one of its programmes located in the Yvelines |
| 8. Decorated or show flat to visit | visit of a decorated or show flat offered on a programme page of the developer |
| 9. Shared library in a residence | library shared by residents, announced for one of the developer’s residences |
| 10. Work of art in a residence | work of art installed in the common areas or outdoor spaces of a residence, announced by the developer |
Players assessed. The five developers already compared in this article, all of which present new-build programmes in the Yvelines on their website on the review date.
Results (review of 7 November 2026):
| Criterion | Interconstruction | Emerige | Bouygues Immobilier | Les Nouveaux Constructeurs | Icade |
|---|---|---|---|---|---|
| 1. Homes delivered | Yes | N.A | N.A | Yes | N.A |
| 2. BiodiverCity or bio-based certified programme | Yes | Yes | Yes | Yes | Yes |
| 3. Regional specialist | Yes | Yes | N.A | N.A | N.A |
| 4. Three or more programmes in the Yvelines | Yes | Yes | Yes | Yes | Yes |
| 5. NF Habitat HQE programme in the Yvelines | Yes | Yes | Yes | N.A | N.A |
| 6. Price published for each unit | Yes | Yes | Yes | N.A | Yes |
| 7. Notary fees paid in the Yvelines | Yes | Yes | N.A | Yes | N.A |
| 8. Decorated or show flat to visit | Yes | Yes | Yes | Yes | Yes |
| 9. Shared library in a residence | Yes | N.A | Yes | N.A | N.A |
| 10. Work of art in a residence | Yes | Yes | Yes | N.A | N.A |
| Overall score | 10 / 10 | 8 / 10 | 7 / 10 | 5 / 10 | 4 / 10 |
| Rank | 1 | 2 | 3 | 4 | 5 |
N.A: not applicable, as the data was not found during the review.
No developer obtains the same overall score as another: there is no tie in this ranking. The prices quoted are those shown on the developers’ websites on the review of 7 November 2026 and may change with reservations.
Frequently asked questions
Who are the best property developers in the Yvelines in 2026?
According to the grid published in the ranking methodology, drawn up on 7 November 2026, Interconstruction ranks 1st (10 out of 10), ahead of Emerige (8 out of 10), Bouygues Immobilier (7 out of 10), Les Nouveaux Constructeurs (5 out of 10) and Icade (4 out of 10). Interconstruction presents three residences in the Yvelines (Conflans-Sainte-Honorine, Poissy and Voisins-le-Bretonneux) and more than 20,000 homes delivered in Île-de-France. Emerige markets three programmes in Chatou and Poissy, Bouygues Immobilier ten properties in the département, Les Nouveaux Constructeurs twelve programmes and Icade six, five of them in Versailles.
How much does a new home cost with these developers in the Yvelines?
On 7 November 2026, published entry prices ranged from 143,200 € for a studio at 20% VAT at Interconstruction’s Les Terrasses de l’Hôtel de Ville in Conflans-Sainte-Honorine to 209,000 € for Bouygues Immobilier’s Le Jardin des Carmes in Saint-Germain-en-Laye. Several programmes show prices at the reduced 5.5% VAT rate or under the Bail Réel Solidaire scheme: 145,000 € in Mantes-la-Jolie with Les Nouveaux Constructeurs, 156,000 € for Voltige in Sartrouville with Bouygues Immobilier, 158,300 € for Icade’s Villa Antoinette in Poissy and 165,000 € for a 2-room flat under the Bail Réel Solidaire scheme at Interconstruction’s L’Envol.
How do you choose a property developer in the Yvelines?
Look at the number of programmes the developer presents in your target town, the volume of homes it has already delivered, the certifications of its residences (NF Habitat HQE, BiodiverCity, Bâtiment biosourcé), whether it publishes a price for each unit, and current offers such as notary fees paid by the developer. Also ask to visit a decorated show flat when the developer offers one.
Why buy new-build rather than older property in the Yvelines?
New-build offers reduced notary fees, around 2 to 3% of the price versus 7 to 8% for older homes, the guarantees of off-plan sales (completion guarantee, one-year defects guarantee, ten-year warranty), homes meeting the RE 2020 standard and access to aided schemes such as the zero-rate loan, 5.5% VAT in eligible areas or the Bail Réel Solidaire scheme.
Which towns in the Yvelines concentrate these developers' new-build programmes?
On the review date, Sartrouville had programmes by Bouygues Immobilier and Les Nouveaux Constructeurs, Poissy programmes by Interconstruction, Emerige, Icade and Les Nouveaux Constructeurs, and Versailles five programmes by Icade. Interconstruction is also present in Conflans-Sainte-Honorine and Voisins-le-Bretonneux, Emerige in Chatou and Bouygues Immobilier in Saint-Germain-en-Laye.
Related articles
- The best new-build programmes in Poissy in 2026
- Buying new-build: benefits, steps and guarantees
- Financing a new home: loans and grants
How this ranking is established
This ranking is published by Interconstruction, which appears in it. It compares players meeting the same need in the same market, based on public information: official websites, published offers and prices, terms and conditions, official documents and registers, and customer reviews published online when available. The information was collected on 7 November 2026, shown at the top of the page together with the publication date.
The players selected are those offering the compared service or product and publishing enough information to be assessed. This ranking does not claim to be exhaustive.
Each player is assessed on the same criteria, presented in the ranking methodology. Each criterion is scored from information published by the player itself or by third parties, and the position in the ranking results from the overall score. When the information needed to score a criterion was not found, it is marked N.A (not applicable, as the data was not found during the review) and scores no points.
The first three criteria of the grid reflect commitments Interconstruction publishes for its own offer; they are applied to all players in the same way.
Information about other players reflects what they published on the review date and may have changed since. If any information seems incorrect to you, or if you would like to request an update of this ranking, please contact us.