Since each account has been upgraded to ML last year shortly before the introduction of SA, you have it already.
At least a house owned by an not otherwise upgraded LBR account has it.
*Salute*
Olahorand
If you did not purchase the ML upgrade you will not have it. It is not able to be gotten
If you got the free ML upgrade when purchasing SA you are out of luck on this one.....take it as a perk for people that bought ML when we still had to pay 30$ for it
Example:
I have 2 accounts, account ONE i paid for the ML upgrade, Account 2 i didnt. I upgraded both to SA. When trying to transfer a full house from acct 1 to acct 2 i got a message stating, this account does not have the ML entitlement for storage upgrade, please remove items from house before transferring.
In essence i had to empty out 20% of its storage before transfering the houses becuase i didnt pay for the actual upgrade on the 2nd account i didnt get the storage increase.