diff --git a/data/core.yaml b/data/core.yaml
index e39a1419b..8cf627c5a 100644
--- a/data/core.yaml
+++ b/data/core.yaml
@@ -1295,6 +1295,11 @@ en:
       title: Outdated Tags
       message: '{feature} has outdated tags'
       tip: "Some tags change over time and should be updated."
+    private_data:
+      title: Private Information
+      contact:
+        message: '{feature} might be tagged with private contact information'
+      tip: "Sensitive data like personal phone numbers should not be tagged."
     tag_suggests_area:
       title: Lines Tagged as Areas
       message: '{feature} should be a closed area based on the tag "{tag}"'
@@ -1327,6 +1332,8 @@ en:
       remove_generic_name:
         title: Remove the name
         annotation: Removed a generic name.
+      remove_private_info:
+        annotation: Removed private information.
       remove_tag:
         title: Remove the tag
         annotation: Removed tag.
diff --git a/dist/locales/en.json b/dist/locales/en.json
index c02940efc..f00506a36 100644
--- a/dist/locales/en.json
+++ b/dist/locales/en.json
@@ -1592,6 +1592,13 @@
                 "message": "{feature} has outdated tags",
                 "tip": "Some tags change over time and should be updated."
             },
+            "private_data": {
+                "title": "Private Information",
+                "contact": {
+                    "message": "{feature} might be tagged with private contact information"
+                },
+                "tip": "Sensitive data like personal phone numbers should not be tagged."
+            },
             "tag_suggests_area": {
                 "title": "Lines Tagged as Areas",
                 "message": "{feature} should be a closed area based on the tag \"{tag}\"",
@@ -1636,6 +1643,9 @@
                     "title": "Remove the name",
                     "annotation": "Removed a generic name."
                 },
+                "remove_private_info": {
+                    "annotation": "Removed private information."
+                },
                 "remove_tag": {
                     "title": "Remove the tag",
                     "annotation": "Removed tag."
diff --git a/modules/validations/index.js b/modules/validations/index.js
index 8c5be3e92..b38ff0d97 100644
--- a/modules/validations/index.js
+++ b/modules/validations/index.js
@@ -8,5 +8,6 @@ export { validationMissingRole } from './missing_role';
 export { validationMissingTag } from './missing_tag';
 export { validationOldMultipolygon } from './old_multipolygon';
 export { validationOutdatedTags } from './outdated_tags';
+export { validationPrivateData } from './private_data';
 export { validationTagSuggestsArea } from './tag_suggests_area';
 export { validationUnknownRoad } from './unknown_road';
diff --git a/modules/validations/private_data.js b/modules/validations/private_data.js
new file mode 100644
index 000000000..d9a5f807a
--- /dev/null
+++ b/modules/validations/private_data.js
@@ -0,0 +1,95 @@
+import _clone from 'lodash-es/clone';
+
+import { actionChangeTags } from '../actions';
+import { t } from '../util/locale';
+import { utilDisplayLabel } from '../util';
+import { validationIssue, validationIssueFix } from '../core/validator';
+
+
+export function validationPrivateData() {
+    var type = 'private_data';
+
+    // assume that some buildings are private
+    var privateBuildingValues = {
+        detached: true,
+        farm: true,
+        house: true,
+        residential: true,
+        semidetached_house: true,
+        static_caravan: true
+    };
+
+    // but they might be public if they have one of these other tags
+    var okayModifierKeys = {
+        amenity: true,
+        craft: true,
+        historic: true,
+        leisure: true,
+        shop: true,
+        tourism: true
+    };
+
+    // these tags may contain personally identifying info
+    var personalTags = {
+        'contact:email': true,
+        'contact:fax': true,
+        'contact:phone': true,
+        'contact:website': true,
+        email: true,
+        fax: true,
+        phone: true,
+        website: true
+    };
+
+    function privateDataKeys(entity) {
+        var tags = entity.tags;
+        if (!tags.building || !privateBuildingValues[tags.building]) return [];
+        var privateKeys = [];
+        for (var key in tags) {
+            if (okayModifierKeys[key]) return [];
+            if (personalTags[key]) privateKeys.push(key);
+        }
+        return privateKeys;
+    }
+
+    var validation = function(entity, context) {
+
+        var privateKeys = privateDataKeys(entity);
+
+        if (privateKeys.length === 0) return [];
+
+        var fixID = privateKeys.length === 1 ? 'remove_tag' : 'remove_tags';
+        return [new validationIssue({
+            type: type,
+            severity: 'warning',
+            message: t('issues.private_data.contact.message', {
+                feature: utilDisplayLabel(entity, context),
+            }),
+            tooltip: t('issues.private_data.tip'),
+            entities: [entity],
+            info: { privateKeys: privateKeys },
+            fixes: [
+                new validationIssueFix({
+                    icon: 'iD-operation-delete',
+                    title: t('issues.fix.' + fixID + '.title'),
+                    onClick: function() {
+                        var entity = this.issue.entities[0];
+                        var tags = _clone(entity.tags);
+                        var privateKeys = this.issue.info.privateKeys;
+                        for (var index in privateKeys) {
+                            delete tags[privateKeys[index]];
+                        }
+                        context.perform(
+                            actionChangeTags(entity.id, tags),
+                            t('issues.fix.remove_private_info.annotation')
+                        );
+                    }
+                })
+            ]
+        })];
+    };
+
+    validation.type = type;
+
+    return validation;
+}