City officials will tell you none, they do not want you to have birds as pets.
In the City of Las Vegas (county, NLV and Henderson may be different) the rules state: no roosters, coop must be 350 ft away from structures, be on a 3 acre lot and you have to have a permit, you may be able to get a waiver signed from your neighbors for the 350 ft requirement and possibly the 3 acre requirement but like everything else in the city you need a permit(tax) (with drawings and number of birds).
If/when code enforcement finds out you have birds and no permit they send someone over to your house to save you from yourself(they really think your hens are dangerous)… he leaves a pleasant note saying get rid of them with-in a preset amount of time or you get a ticket for up to $1000 and 6 months in jail.
Usually people are fine and don’t complain unless you have a rooster… but it seems every neighborhood has one obnoxious person who gets involved with and complains about everything.
If you have an HOA or live in the more urban areas in town don’t even try, these people are deathly afraid of chickens (unnaturally so) you would have better luck getting a permit to store nuclear waste in your mail box in these areas...
Not sure where you got your information. Here's the link to the city (Las Vegas) ordinance. ~~http://library.municode.com/HTML/14...N.html#TIT7AN_CH7.38WIFAAN_7.38.050POBIEROTRE