diff --git a/dashboard/src/components/AppInstallDialog.vue b/dashboard/src/components/AppInstallDialog.vue
index ab1406e1e..c20379721 100644
--- a/dashboard/src/components/AppInstallDialog.vue
+++ b/dashboard/src/components/AppInstallDialog.vue
@@ -8,6 +8,7 @@ import AccessControl from './AccessControl.vue';
 import PortBindings from './PortBindings.vue';
 import AppsModel from '../models/AppsModel.js';
 import DashboardModel from '../models/DashboardModel.js';
+import DomainsModel from '../models/DomainsModel.js';
 import { PROXY_APP_ID, ACL_OPTIONS } from '../constants.js';
 
 const STEP = Object.freeze({
@@ -16,6 +17,7 @@ const STEP = Object.freeze({
 });
 
 const appsModel = AppsModel.create();
+const domainsModel = DomainsModel.create();
 const dashboardModel = DashboardModel.create();
 
 const subscriptionRequiredDialog = inject('subscriptionRequiredDialog');
@@ -74,22 +76,48 @@ const tcpPorts = ref({});
 const udpPorts = ref({});
 const secondaryDomains = ref({});
 const upstreamUri = ref('');
+const needsOverwriteDns = ref(false);
 
 function onDomainChange() {
   const tmp = domains.value.find(d => d.domain === domain.value);
   domainProvider.value = tmp ? tmp.provider : '';
 }
 
-async function submit() {
+async function onSubmit(overwriteDns) {
   formError.value = {};
   busy.value = true;
 
+  const checkForDomains = [{
+    domain: domain.value,
+    subdomain: location.value,
+  }];
+
+  for (const d in secondaryDomains.value) checkForDomains.push({ domain: secondaryDomains.value[d].domain, subdomain: secondaryDomains.value[d].value });
+
+  for (const d of checkForDomains) {
+    const [error, result] = await domainsModel.checkRecords(d.domain, d.subdomain);
+    if (error) {
+      formError.value.location = error.body ? error.body.message : 'Internal error';
+      busy.value = false;
+      return console.error(error);
+    }
+
+    if (result.needsOverwrite && !overwriteDns) {
+      busy.value = false;
+      needsOverwriteDns.value = true;
+      formError.value.dnsExists = `DNS record for ${d.subdomain}.${d.domain} already exists`;
+      return;
+    }
+  }
+
   const config = {
     subdomain: location.value,
     domain: domain.value,
     accessRestriction: accessRestrictionOption.value === ACL_OPTIONS.ANY ? null : (accessRestrictionOption.value === ACL_OPTIONS.NOSSO ? null : accessRestrictionAcl.value)
   };
 
+  if (overwriteDns) config.overwriteDns = true;
+
   if (manifest.value.optionalSso) config.sso = accessRestrictionOption.value !== ACL_OPTIONS.NOSSO;
 
   const finalPorts = {};
@@ -103,8 +131,7 @@ async function submit() {
   }
   config.ports = finalPorts;
 
-  const finalSecondaryDomains = {};
-  for (var p in secondaryDomains.value) {
+  const finalSecondaryDomains = {};  for (const p in secondaryDomains.value) {
     finalSecondaryDomains[p] = {
       subdomain: secondaryDomains.value[p].value,
       domain: secondaryDomains.value[p].domain
@@ -176,6 +203,7 @@ defineExpose({
     accessRestrictionAcl.value = { users: [], groups: [] };
     domainProvider.value = '';
     upstreamUri.value = '';
+    needsOverwriteDns.value = '';
 
     domainList.forEach(d => {
       d.label = '.' + d.domain;
@@ -244,9 +272,10 @@ defineExpose({
           <div class="description" v-html="description"></div>
         </div>
         <div v-else-if="step === STEP.INSTALL">
-          <div class="text-danger" v-if="formError.generic">{{ formError.generic }}</div>
+          <div class="error-label" v-if="formError.generic">{{ formError.generic }}</div>
+          <div class="error-label" v-if="formError.dnsExists">{{ formError.dnsExists }}</div>
 
-          <form @submit.prevent="submit()" autocomplete="off">
+          <form @submit.prevent="onSubmit(false)" autocomplete="off">
             <fieldset :disabled="busy">
               <input style="display: none;" type="submit" :disabled="!formValid" />
 
@@ -257,7 +286,7 @@ defineExpose({
                   <SingleSelect v-model="domain" :options="domains" option-label="label" option-key="domain" @select="onDomainChange()" :search-threshold="10"/>
                 </InputGroup>
                 <div class="warning-label" v-show="domainProvider === 'noop' || domainProvider === 'manual'" v-html="$t('appstore.installDialog.manualWarning', { location: ((location ? location + '.' : '') + domain) })"></div>
-                <div class="text-danger" v-if="formError.location">{{ formError.location }}</div>
+                <div class="error-label" v-if="formError.location">{{ formError.location }}</div>
               </FormGroup>
 
               <FormGroup v-for="(port, key) in secondaryDomains" :key="key">
@@ -278,7 +307,8 @@ defineExpose({
               <AccessControl v-model:option="accessRestrictionOption" v-model:acl="accessRestrictionAcl" :manifest="manifest"/>
 
               <div class="bottom-button-bar">
-                <Button @click="submit" icon="fa-solid fa-circle-down" :disabled="!formValid" :loading="busy">Install {{ manifest.title }}</Button>
+                <Button v-if="needsOverwriteDns" danger @click="onSubmit(true)" icon="fa-solid fa-circle-down" :disabled="!formValid" :loading="busy">Install {{ manifest.title }} and overwrite DNS</Button>
+                <Button v-else @click="onSubmit(false)" icon="fa-solid fa-circle-down" :disabled="!formValid" :loading="busy">Install {{ manifest.title }}</Button>
               </div>
             </fieldset>
           </form>