Try searching for your county zoning or planning. A lot of them are on the internet now for your convenience.
Planning ordinances basically outline where certain activities will be restricted and where it is permitted. This is so commercial factory is not operating on the same street as single family homes and so people are not raising cows and sheep on small lots. Rabbit raising is usually considered farm use or agricultural use which is usually limited to larger parcels, even though rabbits have small space requirements.
I don't know what county you are in, but I tried BAKER COUNTY OR ZONING that took me to a page of zoning definitions.
After some clicking around I found this page on Baker County Planning department
http://www.bakercounty.org/planning/tab ... tents.html
Then I found this under Definitions
http://www.bakercounty.org/planning/Art ... _108a.html
Farm use: The current employment of land for the primary purpose of obtaining a profit in money, including that portion of such land under buildings supporting accepted farming practices, by raising, harvesting and selling crops or by the feeding, breeding, management and sale of or the produce of livestock, poultry, fur-bearing animals, or honeybees, or for dairying and the sale of dairy products or any other agricultural or horticultural use or animal husbandry or any combination thereof. Farm use includes the preparation and storage of the products raised on such land for man's use and animal use and disposal by marketing or otherwise. (See ORS 215.203 for a complete description).
Now, the production of livestock, poultry, fur-bearing animals can include rabbits, as can animal husbandry.
Try contacting your county 4H office. They may have somebody who is familiar with rabbit laws in your county.
Have a good day!
Franco Rios