diff --git a/packages/@aws-cdk/aws-ec2-alpha/lib/vpc-v2-base.ts b/packages/@aws-cdk/aws-ec2-alpha/lib/vpc-v2-base.ts
index cc45b67659c99..458b4e8757340 100644
--- a/packages/@aws-cdk/aws-ec2-alpha/lib/vpc-v2-base.ts
+++ b/packages/@aws-cdk/aws-ec2-alpha/lib/vpc-v2-base.ts
@@ -230,6 +230,13 @@ export abstract class VpcV2Base extends Resource implements IVpcV2 {
   */
   public abstract readonly ownerAccountId: string;
 
+  /**
+   * IPv4 CIDR provisioned under pool
+   * Required to check for overlapping CIDRs after provisioning
+   * is complete under IPAM pool
+   */
+  public abstract readonly ipv4IpamProvisionedCidrs?: string[];
+
   /**
   * If this is set to true, don't error out on trying to select subnets
   */