I've got no experience with teepee's (or tipi's, or lodges, or whatever they're called!).
But I did stay at a Holiday Inn last night, so I should be able to figure it out for you! /forums/images/graemlins/smirk.gif
Sorry! /forums/images/graemlins/crazy.gif I guess I'm a little <font color="green"> froggy </font> today! /forums/images/graemlins/blush.gif
Seriously, I saw a story on HGTV about a couple that built and live in a teepee all year long. I think it was on the show called Extreme Homes. Granted, it was larger than the 20' you're thinking about. But it was amazing how much stuff they got into it. I don't recall if they mentioned how much it cost them. You might be able to go to the HGTV web site and then to the Extreme Homes show and find the story listed and then view it. It could give you some ideas anyway! /forums/images/graemlins/smile.gif