Could not find the implementation of the query pattern for source type. Join not found - entity-framework

Question

I don't know if I am doing this right. I have 2 tables Property and PropertyTypes. Each Property has 1 PropertyType. I am using a foreign key constraint. But on the creation of the controller, I get this error already:
"Could not find an implementation of the query pattern for source type 'DbSet'.'Join not found'
Please see my code below:
[Table("Property.Property")]
public class Property
{
[Key]
public int PropertyId { get; set; }
[StringLength(50)]
public string PropertyName { get; set; }
public int? Owner { get; set; }
public string Cluster { get; set; }
public string PropertyNumber { get; set; }
public string RegionCode { get; set; }
public string ProvinceCode { get; set; }
public string MunicipalCode { get; set; }
public string BarangayCode { get; set; }
public DateTime? DateAdded { get; set; }
public DateTime? DateModified { get; set; }
public int PropertyTypeId { get; set; }
public PropertyType PropertyType { get; set; }
[NotMapped]
public string Type { get; set; }
}
[Table("Property.Types")]
public class PropertyType
{
[Key]
public int PropertyTypeId { get; set; }
[StringLength(50)]
public string Type { get; set; }
public DateTime? DateAdded { get; set; }
public DateTime? DateModified { get; set; }
public List<Property> Properties { get; set; }
}
public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
public ApplicationDbContext()
: base("DefaultConnection", throwIfV1Schema: false) {}
// DB Sets
public DbSet<Property> Properties { get; set; }
public DbSet<PropertyType> PropertyTypes { get; set; }
}
Controller
public class PropertyController : ApiController
{
[HttpGet]
[Authorize]
[Route("api/getproperties")]
public async Task<List<Property>> GetProperties()
{
using(var db = new ApplicationDbContext())
{
var properties = await (from p in db.Properties
join pt in db.PropertyTypes
on p.PropertyTypeId equals pt.PropertyTypeId
select new
{
PropertyId = p.PropertyId,
PropertyName = p.PropertyName,
Owner = p.ProertyOwner,
Cluster = p.Cluster,
PropertyNumber = p.PropertyNumber,
RegionCode = p.RegionCode,
ProvinceCode = p.ProvinceCode,
MunicipalCode = p.MunicipalCode,
BarangayCode = p.BarangayCode,
DateAdded = p.DateAdded,
DateModified = p.DateModified,
PropertyTypeId = p.PropertyTypeId,
type = pt.Type
}
).ToListAsync();
return properties;
}
}
}
Can you please show me the right way to do this? Thank you.