The technology has gotten good enough that the gap between simulator golf and real golf is smaller than most skeptics expect. Launch monitors — the sensors that track ball and club data — are now accurate enough to be used by tour professionals for serious fitting and practice. Systems like Trackman, Foresight, and Uneekor measure club speed, ball speed, launch angle, spin rate, and shot shape with precision that a range bucket and a shag bag simply can't match. You get immediate, objective feedback on every swing, which is how practice actually produces improvement rather than just reinforcing existing habits.
The space and budget questions are where most people start, and they're the right place to start. A functional indoor golf simulator for year round practice doesn't require a dedicated ballroom — a single-car garage bay works for most people. The minimum meaningful dimensions are roughly 10 feet wide, 10 feet tall, and 15 feet deep, though 18 to 20 feet of depth gives you better sight lines and more room to swing freely. Ceiling height is the constraint that eliminates the most spaces, especially for taller golfers with upright swings. Measure with your driver in your address position before you commit to a space.
