Depending on what you want, tree houses cost between $9,000 and over $250,000. The average basic kids treehouse/platform costs between $8,000 and $15,000. Higher end residential tree houses typically cost between $25,000 and $60,000. Tree Houses that you can live typically cost between $75,000 and $500,000. Commercial tree houses typically cost between $100,000 and $800,000. The factors that most affect cost are size, height from the ground, quality of finishing details, the grade of materials, the cost of getting electric and/or septic to the area, our travel expenses from Chester County, PA, USA, and what degree that the local building departments are involved. If you have a budget in mind, please contact us and we’ll tell you approximately how much tree house it will buy, or view our to find something close to what you want, and scroll down to the bottom of each project for a price range for something similar. For a more complete description of the pricing variables in a custom treehouse project, please visit our treehouse pricing page, or, try our Treehouse Cost Estimator to get a free ballpark price quote right now!