That will depend upon your experience and building methods. I built one a few years ago. I don't remember the exact time it took, but it was a quick build. I'd say I had about 40 hours into the build if you include everything, i.e. build, cover, radio setup, etc. However, I have probably built 30 planes, including some from scratch. A less experienced builder may need more time. Regardless, as kits go, the SE was one of the easiest/quickest I have ever built.