Need a surveyor in Warwick RI.

[ddurand]

Any suggestions?

How much do they charge for a 27' powerboat?

 

[cwms]

Cost will probably be in the ballpark of $20-30 per foot for a full pre-purchase survey. Insurance survey will be cheaper.
You might want to look up either NAMS or SAMS. They are the primary survey qualification institutions and see who is in your area.