diff --git a/src/hooks/timers.ts b/src/hooks/timers.ts
index 4bda6727..dc379233 100644
--- a/src/hooks/timers.ts
+++ b/src/hooks/timers.ts
@@ -18,3 +18,17 @@ export function useDebouncedValue<T>(value: T, ms: number): T {
 
   return debounced;
 }
+
+export function useNow() {
+  const [now, setNow] = useState(new Date());
+
+  useEffect(() => {
+    const interval = setInterval(() => {
+      setNow(new Date());
+    }, 1000);
+
+    return () => clearInterval(interval);
+  }, []);
+
+  return now;
+}
diff --git a/src/intl/en.json b/src/intl/en.json
index 49b8849f..e8962355 100644
--- a/src/intl/en.json
+++ b/src/intl/en.json
@@ -152,6 +152,7 @@
     "build": {
       "title": "Build",
       "buildSkipped": "This deployment uses a previous build originally created during deployment <link>{deploymentId}</link>",
+      "duration": "<dim>Duration: {duration}s</dim>",
       "completed": "<dim>Completed in</dim> {elapsed}s",
       "waitingForLogs": {
         "title": "Getting ready to build your service",
diff --git a/src/modules/deployment/deployment-logs/deployment-logs.tsx b/src/modules/deployment/deployment-logs/deployment-logs.tsx
index cb504c66..2289f662 100644
--- a/src/modules/deployment/deployment-logs/deployment-logs.tsx
+++ b/src/modules/deployment/deployment-logs/deployment-logs.tsx
@@ -19,6 +19,7 @@ import {
 import { hasBuild } from 'src/application/service-functions';
 import { useObserve } from 'src/hooks/lifecycle';
 import { useLogs } from 'src/hooks/logs';
+import { useNow } from 'src/hooks/timers';
 import { Translate } from 'src/intl/translate';
 
 import { BuildLogs } from './build-logs';
@@ -168,7 +169,6 @@ type BuildSectionHeaderProps = {
 };
 
 function BuildSectionHeader({ expanded, setExpanded, deployment, lines }: BuildSectionHeaderProps) {
-  const build = deployment.build;
   const status = getBuildStatus(deployment);
   const [StatusIcon, statusColorClassName] = buildStatusMap[status];
 
@@ -181,18 +181,44 @@ function BuildSectionHeader({ expanded, setExpanded, deployment, lines }: BuildS
       StatusIcon={StatusIcon}
       statusColorClassName={statusColorClassName}
       lastLogLine={status === 'running' ? lines[lines.length - 1] : undefined}
-      end={
-        status === 'completed' &&
-        build !== undefined && (
-          <div>
-            <T id="build.completed" values={{ elapsed: elapsed(build) }} />
-          </div>
-        )
-      }
+      end={<BuildSectionHeaderEnd expanded={expanded} deployment={deployment} />}
     />
   );
 }
 
+type BuildSectionHeaderEndProps = {
+  expanded: boolean;
+  deployment: ComputeDeployment;
+};
+
+function BuildSectionHeaderEnd({ expanded, deployment }: BuildSectionHeaderEndProps) {
+  const build = deployment.build;
+  const status = getBuildStatus(deployment);
+  const now = useNow();
+
+  if (build === undefined) {
+    return;
+  }
+
+  if (status === 'running' && expanded) {
+    const duration = Math.floor((now.getTime() - new Date(build.startedAt).getTime()) / 1000);
+
+    return (
+      <div>
+        <T id="build.duration" values={{ duration }} />
+      </div>
+    );
+  }
+
+  if (status === 'completed') {
+    return (
+      <div>
+        <T id="build.completed" values={{ elapsed: elapsed(build) }} />
+      </div>
+    );
+  }
+}
+
 function getBuildStatus(deployment: ComputeDeployment): DeploymentBuildStatus | 'pending' {
   const { build } = deployment;