how long does it take to build a rocket?

Question: how long does it take to build a rocket?
- Keywords:
  build,
  rocket
Asked by tom_morrissey7 to RocketRich, Col Op, Elie, Floris, Jenn on 15 Mar 2016. This question was also asked by 895btr39.
- Floris Van Den Berg answered on 15 Mar 2016:
  
  A few months, bu the development takes often many years.

Question: how long does it take to build a rocket?