What does the 20 % Second Homes Act limit mean?

If a municipality’s second-home share is 20 % or more, no new second homes may in principle be built there. Whether the freeze applies is determined officially by the ARE. Around 326 municipalities are currently subject to it.

National ranking · Data 2026 · Source: BFS

The highest second-home share in Switzerland

Swiss municipality rankings →

Campo (Vallemaggia) (TI) has the highest second-home share in Switzerland: 90.2 % of all dwellings are second homes. Next come Bosco/Gurin (87.6 %) and Riederalp (87.4 %). At 20 % or above, the Second Homes Act building freeze applies. Source: ARE.

Top 100

ARE · 2026

Rank	Municipality	Second-home share	Canton	Residents
1	Campo (Vallemaggia)	90.2%	TI	47
2	Bosco/Gurin	87.6%	TI	43
3	Riederalp	87.4%	VS	445
4	Bellwald	85.7%	VS	364
5	Bettmeralp	85.5%	VS	468
6	Cerentino	83.3%	TI	39
7	Mergoscia	82.9%	TI	194
8	Verzasca	81.5%	TI	749
9	Obersaxen Mundaun	81%	GR	1'151
10	Lavizzara	80.2%	TI	504
11	Linescio	79.3%	TI	42
12	Obergoms	79.1%	VS	662
13	Calanca	78.3%	GR	213
14	Ronco sopra Ascona	77.9%	TI	516
15	Falera	77.9%	GR	651
16	Madulain	77.5%	GR	206
17	Ferrera	77.3%	GR	74
18	Ergisch	76.8%	VS	184
19	Onsernone	76.7%	TI	643
20	Goms	76.6%	VS	1'163
21	Binn	76.5%	VS	126
22	Vaz/Obervaz	76.2%	GR	2'703
23	Zwischbergen	76.1%	VS	75
24	Leukerbad	75.8%	VS	1'401
25	Surses	74.6%	GR	2'494
26	Anniviers	74.5%	VS	2'785
27	Silvaplana	73.8%	GR	1'108
28	Wiler	73.4%	VS	522
29	Simplon	73.2%	VS	287
30	Dalpe	73.2%	TI	188
31	Arosa	73%	GR	3'144
32	Lantsch/Lenz	72.9%	GR	534
33	Ernen	72.8%	VS	538
34	Brissago	72.2%	TI	1'577
35	Sils im Engadin/Segl	72.1%	GR	693
36	Laax	72.1%	GR	2'104
37	Buseno	72.1%	GR	102
38	Rossa	71.9%	GR	172
39	Brione sopra Minusio	71.7%	TI	432
40	Avers	71.5%	GR	166
41	Santa Maria in Calanca	71.4%	GR	113
42	Albinen	71.4%	VS	245
43	Bedretto	71.1%	TI	116
44	Mesocco	71.1%	GR	1'432
45	Flims	70.9%	GR	2'954
46	Tujetsch	70.5%	GR	1'186
47	Bergün Filisur	69.9%	GR	894
48	Hasliberg	69.5%	BE	1'125
49	Grächen	69.3%	VS	1'321
50	Gryon	69.3%	VD	1'535
51	Orselina	69.1%	TI	682
52	Furna	69.1%	GR	200
53	Urmein	69%	GR	162
54	La Punt Chamues-ch	68.9%	GR	763
55	Celerina/Schlarigna	68.5%	GR	1'410
56	Centovalli	68.5%	TI	1'049
57	Veysonnaz	68.4%	VS	614
58	Vex	68.1%	VS	1'970
59	Breil/Brigels	68%	GR	1'738
60	Ormont-Dessus	67.7%	VD	1'438
61	Lax	66.8%	VS	340
62	Bister	66.7%	VS	39
63	Blenio	66.3%	TI	1'752
64	Adelboden	66.3%	BE	3'438
65	Bürchen	66.1%	VS	774
66	Faido	65.8%	TI	2'706
67	Saas-Balen	65.7%	VS	340
68	Medel	65.5%	GR	330
69	Zuoz	65.2%	GR	1'210
70	Klosters	65.1%	GR	4'499
71	Saint-Martin	65.1%	VS	841
72	Blatten	65.1%	VS	291
73	Saas-Fee	65.1%	VS	1'637
74	Lenk	64.9%	BE	2'352
75	Unterbäch	64.7%	VS	483
76	Saas-Almagell	64.6%	VS	376
77	Inden	64.5%	VS	118
78	Rheinwald	64.5%	GR	598
79	Eischoll	64.5%	VS	460
80	Fiesch	64.4%	VS	894
81	Evolène	63.9%	VS	1'673
82	Wildhaus-Alt St. Johann	63.9%	SG	2'614
83	Guttet-Feschel	63.8%	VS	426
84	Oberems	63.7%	VS	141
85	Churwalden	63.7%	GR	2'075
86	Grengiols	63.3%	VS	409
87	Bregaglia	63.1%	GR	1'602
88	Champéry	63.1%	VS	1'415
89	Soubey	63.1%	JU	123
90	Tschappina	63%	GR	148
91	Acquarossa	62.9%	TI	1'781
92	Grindelwald	62.8%	BE	3'942
93	Lumnezia	62.7%	GR	2'056
94	Cevio	62.7%	TI	1'083
95	Schmitten	62.3%	GR	213
96	Gambarogno	62.1%	TI	4'977
97	Muntogna da Schons	62.1%	GR	378
98	Serravalle	62.1%	TI	2'052
99	Mont-Noble	62%	VS	1'188
100	Ormont-Dessous	61.9%	VD	1'261

Dwelling inventory and second-home share 2026 · ARE, retrieved 11.09.2026

How we measure this

ARE

Share of second homes in a municipality’s total dwelling stock, in percent, from the dwelling inventory of the Federal Office for Spatial Development (ARE), as of 2026. The Second Homes Act (ZWG) bars new second-home permits in municipalities whose share is 20 % or more. Whether a municipality is subject to that freeze is an official ARE determination and does not in every case coincide exactly with the 20 % line; it is shown separately on the municipality page.

Frequently asked questions

What does the 20 % Second Homes Act limit mean?: If a municipality’s second-home share is 20 % or more, no new second homes may in principle be built there. Whether the freeze applies is determined officially by the ARE. Around 326 municipalities are currently subject to it.