Noisebridge is a California Public Benefit Membership Corporation. We have also been determined by the IRS to be a Public Charity and exempt from Federal income tax under section 501(c)(3) of the Internal Revenue Code.
Our EIN is 26-3507741.
Scans of our complete 501(c)(3) application are available for download.
Please feel free to use them and hack them for your group's 501(c)(3) application.
Our bylaws are also freely accesssible to all.
i3 Detroit is a hackerspace that is filing for 501(c)(3) status. They have a very nice tutorial on the 501(c)(3) process: