How to transfer ownership of a sim

[IMGypsy]

Where do I the form to transfer ownership of my sim?

[Griffin Ceawlin]

https://support.secondlife.com/create-case/

Ticket type - Land & Region / initiate Region Purchase (or Initiate Region Sale as appropriate)

...

Both buyer and seller must submit support tickets, via the Support Portal, naming the region to be transferred and the transaction amount agreed upon in either U.S. dollars (USD) or Linden dollars (L$). Both sides also have to confirm other details about the region being transferred.

http://community.secondlife.com/t5/English-Knowledge-Base/Managing-Private-Regions/ta-p/700115#Section_.3

[Lindal Kidd]

Be sure to read the link Griff suggested!  There is important stuff in there.  For example, if you are going to change the sim's name or its grid location, now is the time to to it because it will cost you more later.