I agree with the above posts as well. As a gym owner myself, there are so many factors to consider when financially planning to build a gym. I can only lend you a number based on my experience. In building a 4200 sq ft gym and owning the equipment, it cost approximately 120k. However, this number does not take into account the operation of the gym for the year or two before it turns profitable.
I wish you the best!
I agree with the others. Some of the factors you need to consider when building a gym are the size, the location, your available budget, the type of clients you are targeting, the type of training you will be doing, the type of equipment you are looking to get and also your business plan. Sometimes the contractors you will be using to build your gym can influence your overall costs.