RSA 477:48 VI (Supp. 1981) provides that a landlord shall return the security deposit with interest due, if any, within thirty days from the termination of the tenancy, less any unpaid rent and damages if the tenant is given a written, itemized list of the reasons the amount was withheld. Section VII(b) (Supp. 1979) provides that a landlord who fails to comply with the above provision will be liable for twice the amount of the security deposit plus any interest due, less charges for damages and unpaid rent. If the tenant does not notify the landlord of his or her new address upon termination of the tenancy, however, the landlord is not liable for double damages. RSA 477:48 VIII (Supp. 1979). Although the statute states no definite time period after termination within which notification must be given, we will interpret this period to be a reasonable time.