diff --git a/modules/rtbhouseBidAdapter.js b/modules/rtbhouseBidAdapter.js
index cd60925b2c75..678e156c5e65 100644
--- a/modules/rtbhouseBidAdapter.js
+++ b/modules/rtbhouseBidAdapter.js
@@ -73,8 +73,7 @@ export const spec = {
   isBidRequestValid: function (bid) {
     return !!(includes(REGIONS, bid.params.region) && bid.params.publisherId);
   },
-
-  buildRequests: function (validBidRequests) {
+  buildRequests: function (validBidRequests, bidderRequest) {
     const request = {
       id: validBidRequests[0].auctionId,
       imp: validBidRequests.map(slot => mapImpression(slot)),
@@ -82,6 +81,14 @@ export const spec = {
       cur: DEFAULT_CURRENCY_ARR,
       test: validBidRequests[0].params.test || 0
     };
+    if (bidderRequest && bidderRequest.gdprConsent && bidderRequest.gdprConsent.gdprApplies) {
+      const consentStr = (bidderRequest.gdprConsent.consentString)
+        ? bidderRequest.gdprConsent.consentString.replace(/\+/g, '-').replace(/\//g, '_').replace(/=+$/, '') : '';
+      const gdpr = bidderRequest.gdprConsent.gdprApplies ? 1 : 0;
+      request.regs = {ext: {gdpr: gdpr}};
+      request.user = {ext: {consent: consentStr}};
+    };
+
     return {
       method: 'POST',
       url: buildEndpointUrl(validBidRequests[0].params.region),
diff --git a/test/spec/modules/rtbhouseBidAdapter_spec.js b/test/spec/modules/rtbhouseBidAdapter_spec.js
index 69bd3f40f72b..70f21d2c8681 100644
--- a/test/spec/modules/rtbhouseBidAdapter_spec.js
+++ b/test/spec/modules/rtbhouseBidAdapter_spec.js
@@ -4,7 +4,7 @@ import { newBidder } from 'src/adapters/bidderFactory';
 
 const REGIONS = ['prebid-eu', 'prebid-us', 'prebid-asia'];
 const ENDPOINT_URL = 'creativecdn.com/bidder/prebid/bids';
-
+const consentStr = 'BOJ8RZsOJ8RZsABAB8AAAAAZ+A==';
 /**
  * Helpers
  */
@@ -79,12 +79,38 @@ describe('RTBHouseAdapter', () => {
     it('sends bid request to ENDPOINT via POST', () => {
       let bidRequest = Object.assign([], bidRequests);
       delete bidRequest[0].params.test;
-
       const request = spec.buildRequests(bidRequest);
       expect(request.url).to.equal(buildEndpointUrl(bidRequest[0].params.region));
       expect(request.method).to.equal('POST');
     });
-  })
+
+    it('should not populate GDPR if for non-EEA users', () => {
+      let bidRequest = Object.assign([], bidRequests);
+      delete bidRequest[0].params.test;
+      const request = spec.buildRequests(bidRequest);
+      let data = JSON.parse(request.data);
+      expect(data).to.not.have.property('regs');
+      expect(data).to.not.have.property('user');
+    });
+
+    it('should populate GDPR and consent string if available for EEA users', () => {
+      let bidRequest = Object.assign([], bidRequests);
+      delete bidRequest[0].params.test;
+      const request = spec.buildRequests(bidRequest, {gdprConsent: {gdprApplies: true, consentString: consentStr}});
+      let data = JSON.parse(request.data);
+      expect(data.regs.ext.gdpr).to.equal(1);
+      expect(data.user.ext.consent).to.equal('BOJ8RZsOJ8RZsABAB8AAAAAZ-A');
+    });
+
+    it('should populate GDPR and empty consent string if available for EEA users without consent string but with consent', () => {
+      let bidRequest = Object.assign([], bidRequests);
+      delete bidRequest[0].params.test;
+      const request = spec.buildRequests(bidRequest, {gdprConsent: {gdprApplies: true}});
+      let data = JSON.parse(request.data);
+      expect(data.regs.ext.gdpr).to.equal(1);
+      expect(data.user.ext.consent).to.equal('');
+    });
+  });
 
   describe('interpretResponse', () => {
     let response = [{