can I use my premium square meters to rent on the mainland

[Innula Zenovka]

Your premium subscription entitles you to the tier on 512 square metres.  

You can use this either for a Linden Home (in which case you don't have to buy the land, and LL give you the house and don't count it when calculating your Land Impact) OR you can buy some mainland and use the 512 square metres free of tier for that.  

In that case, though, any house you buy or make will count towards that LI allowance.

[Innula Zenovka]

Your premium subscription entitles you to the tier on 512 square metres.  

You can use this either for a Linden Home (in which case you don't have to buy the land, and LL give you the house and don't count it when calculating your Land Impact) OR you can buy some mainland and use the 512 square metres free of tier for that.  

In that case, though, any house you buy or make will count towards that LI allowance.

[Nyll Bergbahn]

Premium membership gives you the choice of:

1. A free Linden Home allocated randomly but you can choose the type of home if available. Prim allowance is 112 prims and the home itself does not count against that figure. You cannot increase the land size or prim allowance.

or

2. Tier free allowance for 512 s.m. on the mainland but you have to buy the land yourself. Prim allowance is 112 but any home you build will count against that figure. You can of course buy a larger parcel of land with higher prim allowance and the first 512 s.m. will be tier-free.

If you decide to move from your current Option 1 to Option 2, you will need to take back any rezzed items into your Inventory and then abandon the Linden Home via the About Land window. Then go looking for a suitable parcel on the mainland to purchase

Useful links:

http://secondlife.com/land/pricing.php

http://community.secondlife.com/t5/Parcels-for-Sale-Estate/bd-p/ParcelsForSaleEstate

http://community.secondlife.com/t5/English-Knowledge-Base/Buying-land/ta-p/700043