Federal Act
on Spatial Planning
(Spatial Planning Act, SPA)¹

¹ If the erec­tion or modi­fic­a­tion of a build­ing or in­stall­a­tion re­quires de­cisions from two or more au­thor­it­ies, one au­thor­ity shall be des­ig­nated re­spons­ible for en­sur­ing ad­equate co­ordin­a­tion.

² The au­thor­ity re­spons­ible for co­ordin­a­tion:

a.

may is­sue the ne­ces­sary pro­ced­ur­al or­ders;

b.

shall en­sure joint pub­lic­a­tion of all plan­ning ap­plic­a­tion doc­u­ments;

c.

shall ob­tain com­pre­hens­ive opin­ions on the pro­jects from all the can­ton­al and fed­er­al au­thor­it­ies in­volved;

d.

shall en­sure that con­tent of de­cisions is co­ordin­ated and, as far as pos­sible, ar­range for de­cisions to be pub­lished jointly or sim­ul­tan­eously.

³ The de­cisions must not con­tain any con­tra­dic­tions.

⁴ These prin­ciples ap­ply by ana­logy to the land use plan pro­ced­ure.