But, as in real estate, location is nearly everything! Are you going to keep the boat on a mooring or in a slip (location)? If in a slip, do you need electricity? Will the boat have to be hauled and stored on land for part of the year, or not (it depends on your location!)? Will you be doing your own work (bottom paint, varnishing any brightwork, etc...), or will you be hiring the yard to do most of it?
Wooden Boat magazine just had an article on the costs for keeping a range of different boats (anywhere from $1800/year on up to $34,000/year depending on a lot of different variables).
For what it is worth, Great Bay Marine in Newington, NH, publishes their price list on their website: http://www.greatbaymarine.com/
for a 35 footer:
Seasonal Mooring $1200 (Slip $3850)
Haul, Storage, and Launch $1015
prep and paint bottom $665
compound and wax topsides $595
As they say, it doesn''t take much before you''re talking about real money!
Hope this helps,