I sugguest you contact a reputable lender to confirm the costs and determine if it is cost effective to do so. However, if you have renovated or made other significant improvements that have improved your equity there may be a good solid reason to re-finance so as to eradicate PMI for example.
Coldwell Banker Hearthside Realtors
All the Best John+ Sheri RE/MAX
Go easy..... check your closing cost on the re-fi
Your loan after closing is refi and not a purchase. There are rules about how much you can do and that you will pay a higher rate for any PMI.
Contact a mortgage professional WAY in advance for details on your particular situation.