diff --git a/cmd/objectstore/objectstore.go b/cmd/objectstore/objectstore.go
index 4a378c22..0a271895 100644
--- a/cmd/objectstore/objectstore.go
+++ b/cmd/objectstore/objectstore.go
@@ -2,6 +2,7 @@ package objectstore
 
 import (
 	"errors"
+	"fmt"
 
 	"github.com/spf13/cobra"
 )
@@ -35,6 +36,10 @@ var objectStoreCredentialCmd = &cobra.Command{
 	},
 }
 
+const (
+	minBucketSizeGB = 500
+)
+
 func init() {
 
 	ObjectStoreCmd.AddCommand(objectStoreListCmd)
@@ -45,10 +50,11 @@ func init() {
 	ObjectStoreCmd.AddCommand(objectStoreCredentialCmd)
 
 	//Flags for create cmd
-	objectStoreCreateCmd.Flags().Int64VarP(&bucketSize, "size", "s", 500, "Size of the Object store (Minimum size is 500GB)")
+	objectStoreCreateCmd.Flags().Int64VarP(&bucketSize, "size", "s", minBucketSizeGB, fmt.Sprintf("Size of the Object store (Allowed sizes: %dGB or 1000GB)", minBucketSizeGB))
 	objectStoreCreateCmd.Flags().StringVarP(&owner, "owner-name", "n", "", "Name of Owner of the Object store. You can reference name of any civo object store credential created before")
 	objectStoreCreateCmd.Flags().StringVarP(&owner, "owner-access-key", "a", "", "Access Key ID of Owner of the Object store. You can reference name of any civo object store credential created before")
 	objectStoreCreateCmd.Flags().BoolVarP(&waitOS, "wait", "w", false, "a simple flag (e.g. --wait) that will cause the CLI to spin and wait for the Object Store to be ready")
+	objectStoreCreateCmd.Flags().BoolVarP(&yesFlag, "yes", "y", false, "Automatically agree to any confirmation prompts")
 
 	//Flags for update cmd
 	objectStoreUpdateCmd.Flags().Int64VarP(&bucketSize, "size", "s", 500, "Size of the object store (Minimum size is 500GB)")
diff --git a/cmd/objectstore/objectstore_create.go b/cmd/objectstore/objectstore_create.go
index da9fc86e..5140a3dd 100644
--- a/cmd/objectstore/objectstore_create.go
+++ b/cmd/objectstore/objectstore_create.go
@@ -13,16 +13,19 @@ import (
 	"github.com/spf13/cobra"
 )
 
+var allowedBucketSizes = []int64{500, 1000}
+
 var bucketSize int64
 var owner string
 var waitOS bool
+var yesFlag bool
 
 var objectStoreCreateCmd = &cobra.Command{
 	Use:     "create",
 	Aliases: []string{"new", "add"},
 	Example: "civo objectstore create OBJECTSTORE_NAME --size SIZE",
 	Short:   "Create a new Object Store",
-	Long:    "Bucket size should be in Gigabytes (GB) and must be a multiple of 500, starting from 500.\n",
+	Long:    "Bucket size should be in Gigabytes (GB) and must be either 500 or 1000.\n",
 	Args:    cobra.MinimumNArgs(0),
 	Run: func(cmd *cobra.Command, args []string) {
 		utility.EnsureCurrentRegion()
@@ -34,7 +37,6 @@ var objectStoreCreateCmd = &cobra.Command{
 				os.Exit(1)
 			}
 			objectStoreName = args[0]
-
 		} else {
 			objectStoreName = utility.RandomName()
 		}
@@ -60,17 +62,29 @@ var objectStoreCreateCmd = &cobra.Command{
 			client.Region = common.RegionSet
 		}
 
-		if bucketSize < 500 {
-			utility.Error("The minimum size to create an object store is 500 GB. Please provide a valid size.")
+		if bucketSize < minBucketSizeGB {
+			utility.Error("The minimum size to create an object store is %d GB. Please provide a valid size.", minBucketSizeGB)
 			os.Exit(1)
-		} else if bucketSize%500 != 0 {
-			utility.YellowConfirm("The size to create an object store must be a multiple of 500. Would you like to create an %s of %d GB instead? (y/n) ? ", utility.Green("object store"), bucketSize+(500-bucketSize%500))
-			_, err := utility.UserAccepts(os.Stdin)
-			if err != nil {
-				utility.Error("Unable to parse the input: %s", err)
+		}
+
+		if !isAllowedSize(bucketSize) {
+			newSize := adjustedBucketSize(bucketSize)
+			if !isAllowedSize(newSize) {
+				utility.Error("Only 500 GB and 1000 GB sizes are allowed for Object Store.")
 				os.Exit(1)
 			}
-			bucketSize = bucketSize + (500 - bucketSize%500)
+			if !yesFlag {
+				utility.YellowConfirm("Only 500 GB and 1000 GB sizes are allowed. Would you like to create an object store of %d GB instead? (y/n)", newSize)
+				accept, err := utility.UserAccepts(os.Stdin)
+				if err != nil {
+					utility.Error("Unable to parse the input: %s", err)
+					os.Exit(1)
+				}
+				if !accept {
+					os.Exit(1)
+				}
+			}
+			bucketSize = newSize
 		}
 
 		var credential *civogo.ObjectStoreCredential
@@ -135,7 +149,11 @@ var objectStoreCreateCmd = &cobra.Command{
 			os.Exit(1)
 		}
 
-		ow := utility.NewOutputWriterWithMap(map[string]string{"name": objectStore.Name, "id": objectStore.ID, "access_key": objectStore.OwnerInfo.AccessKeyID})
+		ow := utility.NewOutputWriterWithMap(map[string]string{
+			"name":       objectStore.Name,
+			"id":         objectStore.ID,
+			"access_key": objectStore.OwnerInfo.AccessKeyID,
+		})
 
 		switch common.OutputFormat {
 		case "json":
@@ -154,3 +172,19 @@ var objectStoreCreateCmd = &cobra.Command{
 		}
 	},
 }
+
+func adjustedBucketSize(size int64) int64 {
+	if size < minBucketSizeGB {
+		return minBucketSizeGB
+	}
+	return minBucketSizeGB * ((size + minBucketSizeGB - 1) / minBucketSizeGB)
+}
+
+func isAllowedSize(size int64) bool {
+	for _, allowed := range allowedBucketSizes {
+		if size == allowed {
+			return true
+		}
+	}
+	return false
+}