diff --git a/coderd/database/queries.sql.go b/coderd/database/queries.sql.go
index 58874cb7ed8c8..ddef194e924a8 100644
--- a/coderd/database/queries.sql.go
+++ b/coderd/database/queries.sql.go
@@ -21343,8 +21343,11 @@ SET
     dormant_at = CASE WHEN $2::timestamptz > '0001-01-01 00:00:00+00'::timestamptz THEN $2::timestamptz ELSE dormant_at END
 WHERE
     template_id = $3
-AND
-    dormant_at IS NOT NULL
+	AND dormant_at IS NOT NULL
+	-- Prebuilt workspaces (identified by having the prebuilds system user as owner_id)
+	-- should not have their dormant or deleting at set, as these are handled by the
+    -- prebuilds reconciliation loop.
+	AND workspaces.owner_id != 'c42fdf75-3097-471c-8c33-fb52454d81c0'::UUID
 RETURNING id, created_at, updated_at, owner_id, organization_id, template_id, deleted, name, autostart_schedule, ttl, last_used_at, dormant_at, deleting_at, automatic_updates, favorite, next_start_at, group_acl, user_acl
 `
 
@@ -21403,6 +21406,10 @@ SET
 	ttl = $2
 WHERE
 	template_id = $1
+	-- Prebuilt workspaces (identified by having the prebuilds system user as owner_id)
+	-- should not have their TTL updated, as they are handled by the prebuilds
+	-- reconciliation loop.
+	AND workspaces.owner_id != 'c42fdf75-3097-471c-8c33-fb52454d81c0'::UUID
 `
 
 type UpdateWorkspacesTTLByTemplateIDParams struct {
diff --git a/coderd/database/queries/workspaces.sql b/coderd/database/queries/workspaces.sql
index 8b9a9e3076555..2f04e8f730491 100644
--- a/coderd/database/queries/workspaces.sql
+++ b/coderd/database/queries/workspaces.sql
@@ -570,7 +570,11 @@ UPDATE
 SET
 	ttl = $2
 WHERE
-	template_id = $1;
+	template_id = $1
+	-- Prebuilt workspaces (identified by having the prebuilds system user as owner_id)
+	-- should not have their TTL updated, as they are handled by the prebuilds
+	-- reconciliation loop.
+	AND workspaces.owner_id != 'c42fdf75-3097-471c-8c33-fb52454d81c0'::UUID;
 
 -- name: UpdateWorkspaceLastUsedAt :exec
 UPDATE
@@ -821,8 +825,11 @@ SET
     dormant_at = CASE WHEN @dormant_at::timestamptz > '0001-01-01 00:00:00+00'::timestamptz THEN @dormant_at::timestamptz ELSE dormant_at END
 WHERE
     template_id = @template_id
-AND
-    dormant_at IS NOT NULL
+	AND dormant_at IS NOT NULL
+	-- Prebuilt workspaces (identified by having the prebuilds system user as owner_id)
+	-- should not have their dormant or deleting at set, as these are handled by the
+    -- prebuilds reconciliation loop.
+	AND workspaces.owner_id != 'c42fdf75-3097-471c-8c33-fb52454d81c0'::UUID
 RETURNING *;
 
 -- name: UpdateTemplateWorkspacesLastUsedAt :exec
diff --git a/enterprise/coderd/schedule/template.go b/enterprise/coderd/schedule/template.go
index 203de46db4168..ed21b8160e2c3 100644
--- a/enterprise/coderd/schedule/template.go
+++ b/enterprise/coderd/schedule/template.go
@@ -242,6 +242,10 @@ func (s *EnterpriseTemplateScheduleStore) Set(ctx context.Context, db database.S
 		nextStartAts := []time.Time{}
 
 		for _, workspace := range workspaces {
+			// Skip prebuilt workspaces
+			if workspace.IsPrebuild() {
+				continue
+			}
 			nextStartAt := time.Time{}
 			if workspace.AutostartSchedule.Valid {
 				next, err := agpl.NextAllowedAutostart(s.now(), workspace.AutostartSchedule.String, templateSchedule)
@@ -254,7 +258,7 @@ func (s *EnterpriseTemplateScheduleStore) Set(ctx context.Context, db database.S
 			nextStartAts = append(nextStartAts, nextStartAt)
 		}
 
-		//nolint:gocritic // We need to be able to update information about all workspaces.
+		//nolint:gocritic // We need to be able to update information about regular user workspaces.
 		if err := db.BatchUpdateWorkspaceNextStartAt(dbauthz.AsSystemRestricted(ctx), database.BatchUpdateWorkspaceNextStartAtParams{
 			IDs:          workspaceIDs,
 			NextStartAts: nextStartAts,
@@ -334,6 +338,11 @@ func (s *EnterpriseTemplateScheduleStore) updateWorkspaceBuild(ctx context.Conte
 		return xerrors.Errorf("get workspace %q: %w", build.WorkspaceID, err)
 	}
 
+	// Skip lifecycle updates for prebuilt workspaces
+	if workspace.IsPrebuild() {
+		return nil
+	}
+
 	job, err := db.GetProvisionerJobByID(ctx, build.JobID)
 	if err != nil {
 		return xerrors.Errorf("get provisioner job %q: %w", build.JobID, err)