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Boissy-Saint-Léger · report

People and new homes in Boissy-Saint-Léger

In 2022 the population fell by 10 while 117 homes were started.

Homes started, 2022
117
Population change, 2022
−10

Population change and homes started in Boissy-Saint-Léger

The population's yearly change, apparent net migration plus births minus deaths, against homes started. INSEE and SDES.

Population change

Show the numbers
YearPopulation change
2022-10
2021-235
2020284
2019309
2018490
2017142
2016533
2015-110
2014-176
2013-301
2012-84
2011129
2010-351
2009457
2008568

Homes started

Show the numbers
YearHomes started
2022117
202187
2020229
201950
2018119
2017135
2016366
2015114
201410
2013128
2012—
2011—
2010—
2009—
2008—

Year by year

YearNet migrationBirths minus deathsPopulation changeHomes started
2008+382+186+568—
2009+268+189+457—
2010−501+150−351—
2011−45+174+129—
2012−240+156−84—
2013−506+205−301128
2014−354+178−17610
2015−264+154−110114
2016+377+156+533366
2017−40+182+142135
2018+324+166+490119
2019+117+192+30950
2020+154+130+284229
2021−414+179−23587
2022−145+135−10117

Births and deaths are INSEE's civil registration, by place of residence. INSEE publishes no yearly migration for places, so migration here is what is left of the population change once births and deaths are taken out, and each year's population is itself drawn from five years of census surveys: read it as a trend. France counts no homes finished, so homes started (SDES Sitadel) stand in; most are finished about two years later. A home houses a household, not a person: two or three new residents per new home is roughly one home per new household.

Other reports for Boissy-Saint-Léger

At the median sale price, a 90 m² home costs €310,950. With 10% down and a 30-year mortgage, the payment is €1,210 a month. The HCSF caps it at 35% of a household's income.

Payment, two incomes
30%
Payment, one income
61%

Owning a 90 m² apartment costs less each month than renting it. Owning counts interest, running costs and the return the deposit could earn, at apartments' median sale price; rent is the asking rent. Repaying the loan is saving, so it is left out.

Rent per month
€1,682
Owning per month
€1,069

Figures for Val-de-Marne: Boissy-Saint-Léger has no reliable figures of its own.

9.9% more homes were licensed for construction in the last 12 months than in an average year of the past decade.

Licensed, 12 months
12,010

5.8% of the 7,469 homes counted in the 2023 census stood empty, whether for sale, to let or for other reasons.

Empty, 2023 census
5.8%
Empty homes
436

In 2025, 2% of the homes authorised were in existing buildings: conversions, extensions and changes of use.

Homes in existing buildings, 2025
2%