Houilles carries less debt per resident than 85% of compared communes
Romain Bertrand has been mayor of Houilles since March 29, 2026, elected by the 39 members of the municipal council. At the March 2026 municipal elections, Tous ensemble pour Houilles won 29 of the 39 seats in the second round on March 22, 2026, with 42.9% of the votes. Houilles is part of the Communauté d'agglomération Saint Germain Boucles de Seine.
March 2032
Councils are elected for six years; the council elects the mayor.
Register to vote ↗Throughout this page, the median in Yvelines and the France median are the median of compared communes (those with an overall grade), each figure its own median.
What stands out about Houilles’s town hall
Decided in a second round
No list won half the votes in the first round, when 4 lists stood. In the second round on March 22, 2026, Tous ensemble pour Houilles came first with 42.9% and took 29 of the 39 seats; the other lists share the remaining 10. Who’s in charge ↓
Less debt per resident than most
Houilles owed €10.7M at the end of 2025, €314 per resident: lower than in 85% of compared French communes (France median €748). That equals 24% of a year’s running costs. The commune’s money ↓
A big year for investment
Houilles invested €617 per resident (buildings, roads, equipment), 32% of its spending: higher than in 77% of compared French communes (France median €403). Investment swings from year to year with projects. The commune’s money ↓
Results as the Interior ministry published them; accounts from the DGFiP via OFGL. Nothing here is graded.
The council the voters chose
Seats as the March 2026 results gave them, one dot a seat.
- Tous ensemble pour Houilles296 community seats
- Houilles La Ville que j'aime72 community seats
- MIEUX VIVRE A HOUILLES20 community seats
- oxygène pour Houilles10 community seats
As elected in the second round, March 22, 2026.
The list that comes first gets half the seats; the rest are shared in proportion among the lists with 5% or more, the winner included. So the winning list always has a majority. The same vote gave Houilles 8 seats on the council of the Communauté d'agglomération Saint Germain Boucles de Seine (community seats).
Source: Interior ministry, 2026 municipal election results (March 15 and 22), subject to corrections and appeals.
4 authorities share the work
The commune is the tier closest to residents; the intercommunality, the département and the région do the rest.
Births, marriages and deaths, the electoral roll, nursery and primary schools, local roads, planning permission, the municipal police, and what else the council takes on.
Mayor: Romain Bertrand · 39 councilors
The services its communes share: usually waste collection, economic development and planning documents; often water and local buses.
Social aid (RSA, care for older and disabled people, child protection), collèges, the département’s roads, and funding for fire and rescue.
Lycées, regional trains (TER) and coaches, economic development and job training.
Who to ask
The usual split of powers (service-public.fr); an intercommunality’s exact remit varies, so check its website for waste, water and buses.
Membership: COG 2026 (INSEE); intercommunality type: BANATIC, January 2025. What each tier does: service-public.fr.
From the mayor to the intercommunality
The officials as the Interior ministry’s register lists them, and the council by list.
- 1Mayorsince March 29, 2026Romain Bertrand
- 2Deputy mayors10 adjoints, elected by the councilMargarida DuarteThierry LambartJennifer ColletPatrick CadiouEstelle BallyJean-Marie FerrandJennifer CourtetChristophe Gout+2 more
- 3Houilles municipal council39 seats by listTous ensemble pour Houilles 29 · Houilles La Ville que j'aime 7 · MIEUX VIVRE A HOUILLES 2 · oxygène pour Houilles 1
- 4Communauté d'agglomération Saint Germain Boucles de SeineHouilles holds 8 seatsCommunity councilors are drawn from the council lists in the same vote.
Source: Interior ministry, national register of elected officials (RNE), August 11, 2026.
The 39 members of the Houilles municipal council
The mayor and 10 deputy mayors first, then the councilors.
| Name | Office | Since |
|---|---|---|
| Romain Bertrand | Maire | March 29, 2026 |
| Margarida Duarte | 1er adjoint au Maire | March 29, 2026 |
| Thierry Lambart | 2ème adjoint au Maire | March 29, 2026 |
| Jennifer Collet | 3ème adjoint au Maire | March 29, 2026 |
| Patrick Cadiou | 4ème adjoint au Maire | March 29, 2026 |
| Estelle Bally | 5ème adjoint au Maire | March 29, 2026 |
| Jean-Marie Ferrand | 6ème adjoint au Maire | March 29, 2026 |
| Jennifer Courtet | 7ème adjoint au Maire | March 29, 2026 |
| Christophe Gout | 8ème adjoint au Maire | March 29, 2026 |
| Céline Junius | 9ème adjoint au Maire | March 29, 2026 |
| Stéphane Brand | 10ème adjoint au Maire | March 29, 2026 |
Show the full council (39)
| Name | Office | Since |
|---|---|---|
| Romain Bertrand | Maire | March 29, 2026 |
| Margarida Duarte | 1er adjoint au Maire | March 29, 2026 |
| Thierry Lambart | 2ème adjoint au Maire | March 29, 2026 |
| Jennifer Collet | 3ème adjoint au Maire | March 29, 2026 |
| Patrick Cadiou | 4ème adjoint au Maire | March 29, 2026 |
| Estelle Bally | 5ème adjoint au Maire | March 29, 2026 |
| Jean-Marie Ferrand | 6ème adjoint au Maire | March 29, 2026 |
| Jennifer Courtet | 7ème adjoint au Maire | March 29, 2026 |
| Christophe Gout | 8ème adjoint au Maire | March 29, 2026 |
| Céline Junius | 9ème adjoint au Maire | March 29, 2026 |
| Stéphane Brand | 10ème adjoint au Maire | March 29, 2026 |
| Charlotte Ba | Conseiller municipal | March 22, 2026 |
| Monika Belala | Conseiller municipal | March 22, 2026 |
| Frédéric Boulila | Conseiller municipal | March 22, 2026 |
| Christophe Cabrol | Conseiller municipal | March 22, 2026 |
| Patrick Carmier | Conseiller municipal | March 22, 2026 |
| Julien Chambert | Conseiller municipal | March 22, 2026 |
| Julien Chambon | Conseiller municipal | March 22, 2026 |
| Floriane Charlot | Conseiller municipal | March 22, 2026 |
| Florence Colombani | Conseiller municipal | March 22, 2026 |
| Constantino Costa | Conseiller municipal | March 22, 2026 |
| Dalila Giroux | Conseiller municipal | March 22, 2026 |
| Stéphanie Gommé | Conseiller municipal | March 22, 2026 |
| Christophe Haudrechy | Conseiller municipal | March 22, 2026 |
| Valérie Hervochon | Conseiller municipal | March 22, 2026 |
| Charles Hébert | Conseiller municipal | March 22, 2026 |
| Sandrine Martinho | Conseiller municipal | March 22, 2026 |
| Pierre Miquel | Conseiller municipal | March 22, 2026 |
| Jean-François Mourtoux | Conseiller municipal | March 22, 2026 |
| Janick Odinot | Conseiller municipal | March 22, 2026 |
| Jean-Claude Payard | Conseiller municipal | March 22, 2026 |
| Isabelle Pellaumail | Conseiller municipal | March 22, 2026 |
| Emilie Pillon | Conseiller municipal | March 22, 2026 |
| Christophe Preveaux | Conseiller municipal | March 22, 2026 |
| Adam Rauner | Conseiller municipal | March 22, 2026 |
| José Ribeiro | Conseiller municipal | March 22, 2026 |
| Matthieu Schmidt | Conseiller municipal | March 22, 2026 |
| Agnès Sinacola | Conseiller municipal | March 22, 2026 |
| Lauryn Zahzouh | Conseiller municipal | March 22, 2026 |
Names and offices as the Interior ministry’s national register of elected officials (RNE) published them on August 11, 2026, written as it writes them. Public role only. Later resignations and replacements aren’t shown.
The council: same source as Who represents Houilles, above.
How Houilles voted in March 2026
4 lists stood in the first round; none won half the votes, so a second round followed.
13,776 votes cast for a list
13,957 of 23,138 registered voters in Houilles voted.
100 blank and 81 spoilt ballots, not counted in the shares.
13,309 votes cast for a list · no seats given out: a second round followed
13,533 of 23,135 registered voters in Houilles voted.
146 blank and 78 spoilt ballots, not counted in the shares.
Turnout, first round · March 15, 2026
Shares are of the votes cast for a list, leaving out blank and spoilt ballots. Lists in vote order; the colors only tell the lists apart.
2026 elections: same source as Who’s in charge, above.
Houilles spends €1,941 per resident a year
The commune’s consolidated accounts: main and annexed budgets, transfers between them removed.
Per resident, 2025 · against compared communes
Spending and debt per resident, 2018 to 2025
Houilles owed €10.7M at the end of 2025, €314 per resident, lower than in 85% of compared French communes, equal to 24% of a year’s running costs.
Show year by year
| Year | Spending | Investment | Debt | Debt in all |
|---|---|---|---|---|
| 2025 | €1,941 | €617 | €314 | €10.7M |
| 2024 | €1,463 | €208 | €255 | €8.6M |
| 2023 | €1,567 | €305 | €192 | €6.5M |
| 2022 | €1,427 | €223 | €220 | €7.3M |
| 2021 | €1,482 | €328 | €247 | €8.1M |
| 2020 | €1,433 | €305 | €287 | €9.3M |
| 2019 | €1,502 | €379 | €328 | €10.5M |
| 2018 | €1,395 | €292 | €362 | €11.7M |
Source: OFGL, consolidated commune accounts 2018–2025 (DGFiP); 2025 provisional.
The 2nd lowest debt per resident of 41 communes its size
The 40 compared communes nearest in population, debt per resident at the end of 2025.
Lowest: Montigny-le-Bretonneux, €257. Highest: Carpentras, €2,742.
Have a say in Houilles
French citizens register online or at the town hall; citizens of other EU countries can vote in municipal elections too.
service-public.fr ↗See where you’re registered and which polling station is yours.
service-public.fr ↗Council meetings are public; the agenda and minutes are posted at the town hall and usually on its website.
service-public.fr ↗Opening hours, address and phone number of the mairie of Houilles in the public services directory.
lannuaire.service-public.fr ↗Who can stand, how lists are formed and the deadlines, from the Interior ministry.
interieur.gouv.fr ↗What this data can and can’t tell you
- Mayors and councilors. From the Interior ministry’s national register of elected officials (RNE) as published on August 11, 2026: name, office and start dates, nothing else. The register counts a mayor as a councilor too; the page counts each person once. It isn’t a live roll: resignations and replacements after that date aren’t shown, and no party is inferred for any official.
- How the council is elected. Since March 2026 every commune elects its council from lists (a 2025 law extended list voting to communes under 1,000). A list with more than half the votes in the first round wins; otherwise lists with 10% or more can go on to a second round, where the list ahead wins. It gets half the seats, and the rest are shared in proportion among lists with 5% or more. The council then elects the mayor and the deputy mayors.
- The label beside a list. The political nuance the prefecture gave the list for the ministry’s results (Divers droite, Union de la gauche…), shown as published. It isn’t the list’s own description; many lists, most in small communes, have none.
- The commune’s money. OFGL’s consolidated accounts from the DGFiP, 2018 to 2025; 2025 is provisional. Spending and investment leave out loan repayments; running costs are part of spending. Debt is what was owed at the end of the year.
- Per resident. Divided by the DGFiP’s population for that year (population totale, which counts some people, such as boarding students, in two communes), so it can differ from the census figure elsewhere on the site.
- The medians. Beside the town’s figure, the median of compared communes in its département and in France (those with an overall grade). A commune’s spending follows its size and its role: one that runs a pool or a theater for the villages around it spends more per resident.
Questions about Houilles’s town hall
Who is the mayor of Houilles?
Romain Bertrand, mayor since March 29, 2026, according to the Interior ministry’s register of elected officials (August 11, 2026).
How many councilors does Houilles have?
The Houilles municipal council has 39 members, the mayor and 10 deputy mayors included.
Who won the 2026 municipal elections in Houilles?
Tous ensemble pour Houilles, in the second round on March 22, 2026, with 42.9% of the votes; it holds 29 of the 39 seats.
What was the turnout in Houilles?
58.5% of registered voters voted in the first round on March 15, 2026; the median of compared French communes was 57.4%.
When are the next municipal elections in Houilles?
Councils are elected for six years, so the next general municipal elections are due in March 2032. A council can be re-elected sooner if it loses too many members.
How much debt does Houilles have?
€10.7M at the end of 2025, €314 per resident; the median of compared French communes was €748.
Which intercommunality is Houilles part of?
Houilles is part of the Communauté d'agglomération Saint Germain Boucles de Seine, which runs the services its communes share.
Sources: Interior ministry RNE, August 11, 2026 · Interior ministry, municipal results 2026 · OFGL consolidated commune accounts 2018–2025 · INSEE COG 2026 and BANATIC (January 2025) for the intercommunality. Under the Licence Ouverte / Open Licence 2.0 (Etalab).
Contains public sector information under the Licence Ouverte / Open Licence 2.0 (Etalab): INSEE, DGFiP, the Interior Ministry’s statistics service (SSMSI), the Ministry of Education (DEPP), the Health Ministry’s statistics service (DREES) and the Housing Ministry (Carte des loyers). Commune boundaries: IGN Admin Express.