If you need an appraisal performed by a "Fee Appraiser" typically at a cost of $400 to $500, you can simply Google "appraisers Las Vegas" and a big list will come up. If you want a "competitive market analysis" done which is free and is performed by a Real Estate agent, like me for instance, you can give me your address, and I will be more than happy to give you an opinion of value. We both use the same comparables when determining value. If I can help, please feel free to email me the address, or post it here.
Good Luck, and thanks for reading.