diff --git a/pkg/asset/installconfig/gcp/validation.go b/pkg/asset/installconfig/gcp/validation.go
index e1c5a550ae7..9283d45af87 100644
--- a/pkg/asset/installconfig/gcp/validation.go
+++ b/pkg/asset/installconfig/gcp/validation.go
@@ -393,7 +393,7 @@ func validatePreexistingServiceAccount(client API, ic *types.InstallConfig) fiel
 // checked for any public zone that can be used.
 func ValidatePreExistingPublicDNS(client API, ic *types.InstallConfig) field.ErrorList {
 	// If this is an internal cluster, this check is not necessary
-	if ic.Publish == types.InternalPublishingStrategy {
+	if ic.Publish == types.InternalPublishingStrategy || ic.GCP.UserProvisionedDNS == dnstypes.UserProvisionedDNSEnabled {
 		return nil
 	}
 	allErrs := field.ErrorList{}
diff --git a/pkg/asset/installconfig/gcp/validation_test.go b/pkg/asset/installconfig/gcp/validation_test.go
index 6ccb5e5b883..fd771407918 100644
--- a/pkg/asset/installconfig/gcp/validation_test.go
+++ b/pkg/asset/installconfig/gcp/validation_test.go
@@ -26,6 +26,7 @@ import (
 	"github.com/openshift/installer/pkg/asset/installconfig/gcp/mock"
 	"github.com/openshift/installer/pkg/ipnet"
 	"github.com/openshift/installer/pkg/types"
+	customDNS "github.com/openshift/installer/pkg/types/dns"
 	"github.com/openshift/installer/pkg/types/gcp"
 )
 
@@ -116,6 +117,7 @@ var (
 	validateXpnSA            = func(ic *types.InstallConfig) { ic.ControlPlane.Platform.GCP.ServiceAccount = validXpnSA }
 	invalidateXpnSA          = func(ic *types.InstallConfig) { ic.ControlPlane.Platform.GCP.ServiceAccount = invalidXpnSA }
 	invalidateBaseDomain     = func(ic *types.InstallConfig) { ic.BaseDomain = invalidBaseDomain }
+	enableCustomDNS          = func(ic *types.InstallConfig) { ic.GCP.UserProvisionedDNS = customDNS.UserProvisionedDNSEnabled }
 
 	validServiceEndpoint = func(ic *types.InstallConfig) {
 		ic.Publish = types.InternalPublishingStrategy
@@ -485,6 +487,12 @@ func TestGCPInstallConfigValidation(t *testing.T) {
 			expectedError:  true,
 			expectedErrMsg: `baseDomain: Not found: "invalid.installer.domain."`,
 		},
+		{
+			name:          "Custom DNS does not require existing base domain",
+			edits:         editFunctions{enableCustomDNS, invalidateBaseDomain},
+			records:       []*dns.ResourceRecordSet{},
+			expectedError: false,
+		},
 	}
 	mockCtrl := gomock.NewController(t)
 	defer mockCtrl.Finish()