There is a 1 bedroom 1 bath 11916 Whalers Lane on the MLS for lease at $2100. It previously lease June 2008 to May 2009 for $1950. It has been on the market 50 days at this price.
So your ballpark would be around these numbers depending on the condition of 11948 in comparison to 11916.
I have lived and worked in Malibu for 18 years and would be glad to meet with you or talk to you on the phone about a more accurate comparison. Please call or email with any questions. Tonya McArthur, Coastal Property Management, Malibu 310-924-9663 email@example.com.