One alar base is higher than the other. Would raising the lower side with an alar base wedge resection be most sensible? (photo)

I perform alar wedge resection quite commonly and I like them.  In your case it could be done under local anesthesia.  You could do only one side, see how it looks, then consider whether the other side needs it,  all while being awake.

Hello,
Thank you for your question. Based on your photo an alar base retraction can be corrected without an alar base wedge resection with the help of the technique developed by me. 
Depending on the amount of alar base retraction and deviation of the nose, it can be corrected by the dissection of the LLANM ( levator labii alaque nasi muscle) musle, rim grafting and alar base release. An in person examination can provide best options for you. To find out more please click on the attached link. 
Best Regards 

Achieving symmetry is not an easy thing to do nor a reality in the most strictest sense. Your observations are correct. However, it is easier to lower vs. raise an alar base in my opinion. If this makes sense to you then a consultation is what you need to do next. Hope this helps,Michael Kulick MD, San Francisco, Ca. 
   Board Certified Plastic Surgeon

   Member of ASPS, ASAPS
   Recipient of the Klingbeil Award from ASAPS – Teaching Safe Techniques and Advanced Technologies