The typical asking rate per listing is in the $30's per square foot per year. The Clark County submarket is going through a an increase in rates. In the last 3 months, the median rate increased $3 per sqft per year. That's a 10% increase in rent.
In the last 90 days, 83 listings have been listed, so you'll want to check back regularly for new listings. About 2% of the listings in the Clark County are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,040 sqft. Most buildings in this area are around 2 floors. Most buildings in this area were built in 1998 and are Class A.