On average, listings lease in the $10's per square foot per year. The Clark County region is seeing a decline in rates. In the last 3 months, the median rate fell $3 per sqft per year. That's a 14% decrease in rent.
In the last 90 days, 12 listings have been made available, which means new availabilities most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 117% of the listings in the Clark County are subleases, so you might be able to snag a great spot on a short term. 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 1,000 sqft. Most buildings in this area are around 1 stories. Most buildings in this market were built in 1965 and are Class B.