The typical asking rate per listing is in the $10's per square foot per year. The Henderson submarket is seeing a a rise in rates. In the last 3 months, the median rate rose $1 per sqft per year. That's a 4% increase in rent.
Compared to the rest of the Las Vegas–Henderson–Paradise market, the Henderson region has smaller rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 109 listings have been made available, so you'll want to check back regularly for new listings. About 1% of the listings in the Henderson are subleases, so you will probably have to focus your search on direct office leases. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,140 sqft. Most buildings in this area are close to 2 floors. Most buildings in this market were built in 2003 and are Class B.