This municipality has experienced contour changes since 2013 :
01/01/2017 – Saint-Sébastien devient commune déléguée (chef-lieu) au sein de Châtel-en-Trièves
(38456) (commune nouvelle).
01/01/2017 – Création de la commune nouvelle de Châtel-en-Trièves en lieu et place
des communes de Cordéac (38125) et de Saint-Sébastien (38456) devenues déléguées.
In the case of a merger, when the geography of the source indicated under the table
/ graph is after the date of the merger, the data correspond to those of the new municipality.
tableauLOG T1 - Growth estimates of the number of housings by category since 1968
LOG T1 - Growth estimates of the number of housings by category since 1968
Housing category
1968(*)
1975(*)
1982
1990
1999
2006
2011
2016
2022
Altogether
198
208
225
246
261
308
325
334
340
Principal residences
96
87
98
129
144
176
192
202
224
Second dwellings and occasional dwellings
70
71
100
91
113
123
113
111
81
Vacant accommodations
32
50
27
26
4
9
21
21
34
(*) 1967 and 1974 for the overseas departments
Sources : Insee, RP1967 to RP1999 counts, RP2006 to RP2022 main holdings.
tableauLOG T1bis - Categories of housings
LOG T1bis - Categories of housings
Category of housing
2011
2016
2022
Principal residences
58,9
60,4
66,0
Second dwellings and occasional dwellings
34,6
33,3
23,9
Vacant dwellings
6,5
6,3
10,1
Sources : Insee, RP2011, RP2016 and RP2022, main operations, geography as of 01/01/2025.
tableauLOG T2 - Types of housings
LOG T2 - Types of housings
Type of housing
2011
%
2016
%
2022
%
Altogether
325
100,0
334
100,0
340
100,0
Houses
307
94,4
317
94,9
317
93,2
Flats
15
4,6
11
3,3
20
5,9
Others
3
0,9
6
1,8
3
0,9
Sources : Insee, RP2011, RP2016 et RP2022, exploitations principales, géographie au
01/01/2025.
tableauLOG T2bis - Contributions to the change in the number of principal residences
LOG T2bis - Contributions to the change in the number of principal residences
Contributions
2011-2016
%
2016-2022
%
Total change
10
3,1
23
6,9
due to the household size effect
15
4,7
5
1,5
due to the demographic effect
–5
–1,6
18
5,3
Note: The change in the number of households (and therefore in the number of main
residences) can be broken down into two effects: the "household size effect" and the
"demographic effect."
Indeed, a decrease in average household size leads to an increased housing need, even
if the population remains stable. The remaining part of the change is referred to
as the demographic effect.
These effects can be either positive or negative.
Sources : Insee, RP2011, RP2016 et RP2022, exploitations principales, géographie au
01/01/2025.
tableauLOG T3 - Principal residences by number of rooms
LOG T3 - Principal residences by number of rooms
Number of rooms
2011
%
2016
%
2022
%
Altogether
192
100,0
202
100,0
224
100,0
1 room
3
1,6
4
2,0
1
0,4
2 rooms
6
3,2
7
3,5
6
2,7
3 rooms
26
13,7
29
14,4
42
18,5
4 rooms
50
26,3
53
26,2
64
28,7
5 rooms or above
106
55,2
109
54,0
111
49,6
Sources : Insee, RP2011, RP2016 and RP2022, main operations, geography as of 01/01/2025.
tableauLOG T4 - Principal residences average number of rooms
LOG T4 - Principal residences average number of rooms
Type of main residence
2011
2016
2022
All main residences
4,7
4,8
4,7
House
4,8
4,8
4,8
Flat
4,1
3,9
3,1
Sources : Insee, RP2011, RP2016 and RP2022, main operations, geography as of 01/01/2025.
tableauLOG T4bis - Dwelling occupancy index
LOG T4bis - Dwelling occupancy index
Occupancy index
2011
2016
2022
Standard occupancy
12,8
10,3
6,7
Moderate over-occupation
0,0
2,6
0,0
Severe over-occupation
0,0
0,0
0,0
Moderate under-occupation
19,2
28,2
25,0
Severe under-occupation
25,6
28,2
24,9
Very severe under-occupation
42,5
30,8
43,4
Sources : Insee, RP2011, RP2016 and RP2022, main operations, geography as of 01/01/2025.
tableauLOG T5 - Principal residences in 2022 by completion period
LOG T5 - Principal residences in 2022 by completion period
Completion period
Number
%
Principal residences build before 2020
224
100,0
Before 1919
79
35,0
From 1919 to 1945
12
5,4
From 1946 to 1970
18
8,1
From 1971 to 1990
32
14,4
From 1991 to 2005
38
17,0
From 2006 to 2019
45
20,1
Source : Insee, RP2022 main operation, geography as of 01/01/2025.
