using System.ComponentModel.DataAnnotations; namespace Landmark.OLA.Models.Residences { public class CurrentResidenceAddress : ResidenceAddress, ICurrentResidenceAddress { [Required] //Slightly arbitrary values that should be safe [Range(0, 1000000000)] //Nullable so that there is no default value public decimal? MonthlyPayment { get; set; } public CurrentResidenceAddress() : base() { } public CurrentResidenceAddress(Guid id) : base(id) { } } }