There are lots of feed stores in L.A. I know of the Malibu Feed Bin, Stephens Hay and Grain, and a few others. It depends where in L.A you live. You can buy bales of timothy hay that’ll last 6 months-a year for only $15-$30. You can also buy straw/shavings, bedding, food, and other supplies in bulk for cheap. The wood pellets, straw, and hay is meant for horses but it’s fine for rabbits.
Honestly, I just ask my neighbor(trusted friend) to watch them. He knows their diet, watches them run around, and plays with them. He has the phone number of my vet in case anything goes wrong. He’s experienced with rabbits. I don’t really like boarding my rabbits somewhere. They are much more comftortable in their own house. But, here’s a link to a rabbit rescue that boards: http://www.rabbitrescue.com/boarding.html
I don’t really know of any private pet stores here, but there are lots of petco’s and petsmart’s everywhere that you can just look up on the internet. I sometimes will go to the petstore to buy toys, but I buy all the supplies (hay, bedding, food,etc.) from the feed bin. It’s much cheaper and more convenient.
Here’s a list of vets. I don’t know how up to date it is (and I don’t use any of these vets) , but I got it off a rabbit rescue in the area.
Westside
Dr. Frank Lavac
VCA Wilshire Animal Hospital
2421 Wilshire Blvd.
Santa Monica, CA 90403
(310) 828-4587
Dr. L. Schwartz
3465 Overland Ave.
(Overland & Palms)
Los Angeles, CA 90034
(310) 559-2424
Dr. Olivia Petritz
ACCESS Los Angeles
9599 Jefferson Blvd.
Culver City, CA 90232
(310) 558-6100
Pasadena Area
Dr. Sari Kanfer
Exotic Animal Care Center
2121 E. Foothill Blvd.
Pasadena, CA 91107
(626) 405-1777
Drs. Lori Pickell, Valerie Tesauro
TLC Pet Medical Center
1412 Huntington Dr.
So. Pasadena, CA 91030
(626) 441-8555
Dr. Bronwyn Dawson
Vanderhoof Veterinary Hospital
2234 Lake Avenue, Suite 101
Altadena, CA 91001
(626) 798-5901
Glendale and San Fernando Valley
Dr. Charles Misetich
Arden Animal Hospital
407 W. Arden Blvd.
Glendale, CA 91203
(818) 246-2478
Dr. Anne Marie Dueppen
VCA McClave Animal Hospital
6950 Reseda Blvd.
Reseda, CA 91335
(818) 881-5102
Dr. Daniel Reimer
Adler Veterinary Group
16911 Roscoe Blvd.
Sepulveda, CA 91343
(818) 893-6366
South Bay
Dr. Walter Rosskopf
Avian & Exotic Animal Hospital
4871 W. Rosecrans Ave.
Hawthorne, CA 90250
(310) 679-0693
Dr. William Ridgeway
Long Beach Animal Hospital
3816 E. Anaheim St.
Long Beach, CA 90804
(562) 434-9966
Dr. Ann Murata
Animal Emergency Clinic
3511 Pacific Coast Highway, Ste. A
Torrance, CA 90505
(310) 325-3000
Hope I helped!