It can vary. The first playground we built in 2007 took six weeks from initial concept to construction. Since then we’ve improved how we do things and are now building playgrounds in as little as 5-10 days. Generally, a minimum of two weeks construction time is a good estimate of how long to plan for to ensure you have time to sort out the inevitable bumps you hit along the way. You will need additional time on top of this for planning designing, fundraising etc.