How many days a year does it rain/drizzle in Portland? I'll be there for a few weeks in a couple of weeks.

Nice treehouse.

Wired for power - I don't think so, not permanent power anyway. Don't want to attract "building inspector" attention with lights.

Wife wants interior walls of 1st floor insulated and finished off. I'm resisting because kind of needing to move on to the next home project.

But for the winter here, when it is rainy and chilly, I guess I can see the appeal of pulling a little space heater on long extension cord into the treehouse. Find a squishy armchair and a warm rug. Make sure the WiFi reaches, and I'll be surfing PPOT from the trees.

http://www.oregonphotos.com/Haggart-Observatory.html

Avg 150 days/year rain, included in the 220 days/year cloudy

But summer is nice.

less than 120 s.f. - probably would not require a building permit

Cool, not as bad as I thought but I know you still get twice as much rain as Michigan.

68 clear days a year............East Lansing, MI is 81, which is about an hour north of Ann Arbor.

There is a tire hanging from the neighbor's tree, that pretty much serves as the rope swing for all the kids on the block. So I prob won't put up a rope swing for the treehouse. Better that kids crack their skulls on the neighbor's property than on mine.

Another option is to enclose the space below, sheathing the four support posts, to make it a three-story treehouse. Right now, I'd rather have the firewood storage than a rez-de-chaussee.

Great job John. Very nice!!

When your kids are done with it, you will have to remember to tear it down. At the age of 35 I went back to my old "fort" at the back of my folks property and found countless syringes and empty bottles that I do not recall leaving behind...

Wow, that is too cool. Looks medieval - I think you need to dig a moat around it.

Do you enter in the bottom part, under the deck, and then climb up to the upper part? I can't see quite clearly because of the foliage.