diff --git a/Gemfile b/Gemfile
index e7442aea7..0612d7aca 100644
--- a/Gemfile
+++ b/Gemfile
@@ -80,6 +80,8 @@ gem 'bootstrap-wysihtml5-rails', '~> 0.3.3.8'
 gem 'swagger-docs'
 gem 'grape-swagger-rails'
 
+gem 'as_csv'
+
 group :test do
   gem 'capybara'
   gem 'factory_girl'
diff --git a/Gemfile.lock b/Gemfile.lock
index 5355056ee..d2119251c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -48,6 +48,10 @@ GEM
       tzinfo (~> 1.1)
     addressable (2.3.8)
     arel (6.0.2)
+    as_csv (2.0.2)
+      actionpack (>= 3.0)
+      activemodel (>= 3.0)
+      responders
     ast (2.0.0)
     astrolabe (1.3.0)
       parser (>= 2.2.0.pre.3, < 3.0)
@@ -491,6 +495,7 @@ PLATFORMS
 
 DEPENDENCIES
   active_model_serializers
+  as_csv
   bootstrap-datepicker-rails
   bootstrap-sass (~> 3.3.5)
   bootstrap-wysihtml5-rails (~> 0.3.3.8)
diff --git a/app/controllers/api/v1/dossiers_controller.rb b/app/controllers/api/v1/dossiers_controller.rb
index 274212105..3c6c432fb 100644
--- a/app/controllers/api/v1/dossiers_controller.rb
+++ b/app/controllers/api/v1/dossiers_controller.rb
@@ -1,5 +1,4 @@
 class API::V1::DossiersController < APIController
-
   swagger_controller :dossiers, "Dossiers"
 
   swagger_api :index do
@@ -32,7 +31,10 @@ class API::V1::DossiersController < APIController
   def show
     procedure = current_administrateur.procedures.find(params[:procedure_id])
     dossier = procedure.dossiers.find(params[:id])
-    render json: dossier, status: 200
+    respond_to do |format|
+      format.json { render json: dossier, status: 200 }
+      format.csv  { render  csv: dossier, status: 200 }
+    end
   rescue ActiveRecord::RecordNotFound => e
     render json: {}, status: 404
   end
diff --git a/app/controllers/api_controller.rb b/app/controllers/api_controller.rb
index 574216a48..bf471b3ba 100644
--- a/app/controllers/api_controller.rb
+++ b/app/controllers/api_controller.rb
@@ -1,5 +1,6 @@
 class APIController < ApplicationController
   before_action :authenticate_user
+  before_filter :default_format_json
 
   def authenticate_user
     render json: {}, status: 401 unless valid_token?
@@ -14,4 +15,8 @@ class APIController < ApplicationController
   def current_administrateur
     @administrateur ||= Administrateur.find_by_api_token(params[:token])
   end
+
+  def default_format_json
+    request.format = "json" unless request.accept
+  end
 end
\ No newline at end of file
diff --git a/app/models/dossier.rb b/app/models/dossier.rb
index 9f211771f..eed631711 100644
--- a/app/models/dossier.rb
+++ b/app/models/dossier.rb
@@ -1,4 +1,5 @@
 class Dossier < ActiveRecord::Base
+
   enum state: {draft: 'draft',
                initiated: 'initiated',
                replied: 'replied',
@@ -192,6 +193,13 @@ class Dossier < ActiveRecord::Base
     procedure.cerfa_flag? && !cerfa.empty?
   end
 
+  def as_csv(options={})
+    dossier_attr = DossierSerializer.new(self).attributes
+    etablissement_attr = EtablissementSerializer.new(self.etablissement).attributes.map {|k, v| ["etablissement.#{k}", v] }.to_h
+    entreprise_attr = EntrepriseSerializer.new(self.entreprise).attributes.map {|k, v| ["entreprise.#{k}", v] }.to_h
+    dossier_attr.merge(etablissement_attr).merge(entreprise_attr)
+  end
+
   private
 
   def build_default_cerfa
diff --git a/spec/models/dossier_spec.rb b/spec/models/dossier_spec.rb
index 60342f009..072c57286 100644
--- a/spec/models/dossier_spec.rb
+++ b/spec/models/dossier_spec.rb
@@ -543,4 +543,39 @@ describe Dossier do
       it { expect(dossier.cerfa_available?).to be_falsey }
     end
   end
+
+  describe '#as_csv?' do
+    let(:procedure) { create(:procedure)  }
+    let(:dossier) { create(:dossier, :with_entreprise, user: user, procedure: procedure) }
+    subject { dossier.as_csv }
+
+    it { expect(subject[:nom_projet]).to eq("Demande de subvention dans le cadre d'accompagnement d'enfant à l'étranger") }
+    it { expect(subject[:description]).to eq("Ma super description") }
+    it { expect(subject[:archived]).to be_falsey }
+    it { expect(subject['etablissement.siret']).to eq('44011762001530') }
+    it { expect(subject['etablissement.siege_social']).to be_truthy }
+    it { expect(subject['etablissement.naf']).to eq('4950Z') }
+    it { expect(subject['etablissement.libelle_naf']).to eq('Transports par conduites') }
+    it { expect(subject['etablissement.adresse']).to eq("GRTGAZ\r IMMEUBLE BORA\r 6 RUE RAOUL NORDLING\r 92270 BOIS COLOMBES\r") }
+    it { expect(subject['etablissement.numero_voie']).to eq('6') }
+    it { expect(subject['etablissement.type_voie']).to eq('RUE') }
+    it { expect(subject['etablissement.nom_voie']).to eq('RAOUL NORDLING') }
+    it { expect(subject['etablissement.complement_adresse']).to eq('IMMEUBLE BORA') }
+    it { expect(subject['etablissement.code_postal']).to eq('92270') }
+    it { expect(subject['etablissement.localite']).to eq('BOIS COLOMBES') }
+    it { expect(subject['etablissement.code_insee_localite']).to eq('92009') }
+    it { expect(subject['entreprise.siren']).to eq('440117620') }
+    it { expect(subject['entreprise.capital_social']).to eq(537100000) }
+    it { expect(subject['entreprise.numero_tva_intracommunautaire']).to eq('FR27440117620') }
+    it { expect(subject['entreprise.forme_juridique']).to eq("SA à conseil d'administration (s.a.i.)") }
+    it { expect(subject['entreprise.forme_juridique_code']).to eq('5599') }
+    it { expect(subject['entreprise.nom_commercial']).to eq('GRTGAZ') }
+    it { expect(subject['entreprise.raison_sociale']).to eq('GRTGAZ') }
+    it { expect(subject['entreprise.siret_siege_social']).to eq('44011762001530') }
+    it { expect(subject['entreprise.code_effectif_entreprise']).to eq('51') }
+    it { expect(subject['entreprise.date_creation']).to eq('Thu, 28 Jan 2016 10:16:29 UTC +00:0') }
+    it { expect(subject['entreprise.nom']).to be_nil }
+    it { expect(subject['entreprise.prenom']).to be_nil }
+  end
+
 end