Alright, let's cut to the chase. You want a golf simulator. Maybe you’ve seen some slick setups online, watched a few YouTube videos of guys bombing drivers into a screen in their garage, and now you’re thinking, "I can do that."
Trust me, I've been there. My mid-40s, 12-handicap brain thought, "How hard can it be?" Spoiler: it’s not hard, but it requires some serious planning, and the absolute first, most critical thing you need to figure out isn't your launch monitor, your projector, or your hitting mat. It's your space. If your space doesn't work, nothing else matters. You'll just have a very expensive, very frustrating, very dangerous pile of golf equipment.
I built my garage sim a couple of years ago, and I learned a lot through trial and error – mostly error, to be honest. So, let’s talk about the cold, hard reality of golf simulator space requirements.
The Absolute Minimums (Don't Skimp Here)
Before you even think about buying a single piece of tech, grab a tape measure. Seriously, go do it now. These are the numbers that will make or break your sim dream.
Width: The Swing Box
This is where a lot of guys get tripped up. You don't just need room for your body; you need room for your club. And not just your club head, but the full arc of your swing, including your hands and arms.
- Minimum Recommendation: 10 feet
- Ideal Recommendation: 12-13 feet
Why? Most people swing with some natural variance. You might be a righty, but your backswing might go a little wide to the left. If you're too close to a wall, you're either going to hit the wall or subconsciously alter your swing, which defeats the whole purpose of practicing.
My garage is exactly 12 feet wide. I centered my hitting mat, and it gives me about 4 feet of clearance on either side. Even with that, I put some thick foam panels on the side walls just in case. If you're a lefty, you'll need to account for that too, often by offsetting your hitting mat slightly. If you have both lefties and righties using the sim, 12-13 feet is non-negotiable for safety and comfort. Anything less than 10 feet wide, and you're just asking for broken clubs, dented walls, or worse, an injury.
Height: The Ceiling Crusher
This is the biggest killer of simulator dreams. I cannot stress this enough: measure your ceiling height accurately.
- Minimum Recommendation: 9 feet
- Ideal Recommendation: 10 feet+
If you're 6 feet tall and have a standard 8-foot ceiling, you're going to be kissing drywall with your driver on your backswing. I've seen it happen. I almost did it myself! My garage has a 9.5-foot ceiling. I'm 5'10", and with a full driver swing, I still get a little nervous sometimes. I actually have a small dimple in my ceiling from when I first set it up and was still finding my swing rhythm. Learn from my mistake: don't risk it.
The general rule of thumb is your height plus your club length (driver is ~45 inches) plus some clearance. For most average-height golfers, 9 feet is the absolute bare minimum to swing a driver freely without fear. If you're taller than 6 feet, or have a very upright swing, you're going to want 10 feet or more. If you plan to only hit irons, you might get away with 8.5 feet, but why limit yourself? You're building a simulator to hit all your clubs, right?
Depth: The Projector's Playground
This dimension affects your safety, your image quality, and your choice of projector.
- Minimum Recommendation: 15 feet
- Ideal Recommendation: 18-20 feet+
Let's break down that 15 feet:
- Ball to Screen: You need at least 8-10 feet from where the ball leaves the club face to the impact screen. Any closer and you risk too much bounce-back, and the image can look distorted. I started at 8 feet and quickly moved to 9.5 feet; it made a huge difference in image quality and feeling safer.
- Hitting Mat to Launch Monitor: Depending on your launch monitor, you'll need space behind or beside the mat. For something like a SkyTrak or GC3, it's beside the mat. For a ceiling-mounted unit like a Trackman or Foresight GCHawk, it's above. For something like a Garmin R10, you need 6-8 feet behind the ball. If you're going with a radar-based unit, factor that into your depth.
- Projector to Screen: This is where depth really matters. If you have 15 feet of total depth, and 9-10 feet for ball-to-screen, that leaves you 5-6 feet behind the hitting mat. This means you're almost certainly looking at a short-throw projector. Something like the BenQ TH671ST (around $700-800) or the Optoma GT1090HDR (around $1000) are popular choices and require much less distance to fill a large screen. If you have 20+ feet of depth, you have more flexibility and can use a standard throw projector, which can sometimes be cheaper but requires more distance.
My garage is about 20 feet deep. This allowed me to put my impact screen about 10 feet from the hitting mat, and then have my projector mounted overhead about 12 feet from the screen. This gives me a great, bright image and plenty of room to walk around behind the hitting area.
Mack's Garage Build: Real-World Scenario
My setup is in a standard two-car garage bay.
- Dimensions: 12 feet wide, 9.5 feet high, 20 feet deep.
- Hitting Bay: I have a 10'W x 8'H impact screen with a custom enclosure.
- Hitting Mat: Centered in the 12' width.
- Ball-to-Screen: 9.5 feet.
- Launch Monitor: SkyTrak (placed beside the mat).
- Projector: BenQ TH671ST, mounted roughly 12 feet from the screen, slightly above and behind the hitting area.
What I learned: That extra 1.5 feet of height over a standard 8-foot ceiling was a godsend. If I only had 8 feet, I wouldn't have built it. The 12-foot width is comfortable for me (a righty) and occasional lefty friends. The 20-foot depth is perfect, giving me room for my PC setup, a mini-fridge, and some extra safety padding behind the screen.
Beyond the Basics: Making it Playable and Safe
Once you hit the minimums, you start thinking about the actual experience.
Side and Back Wall Clearance
Even with 12 feet of width, you want to protect your side walls. I used thick foam insulation panels covered with black fabric. Some guys build out proper side nets or use padded panels. Don't skimp here. A shank could send a ball careening into drywall, or worse, your computer monitor. Also, consider the bounce-back from the screen. Balls can sometimes roll under the screen or ricochet sideways. I have a net behind my screen and some old blankets for extra sound dampening and to catch any rogue shots.
Ball Return
If your depth allows, consider a ball return system. This can be as simple as angled turf under your screen or a custom slope. It saves you from constantly bending over to pick up balls, especially if you're doing drills.
Lighting
This is often overlooked. You need good, even lighting that doesn't cast shadows on your screen. I used LED strip lights along the ceiling and some diffused shop lights. Avoid direct spotlights that can interfere with your projector or create glare. Make sure any lighting doesn't hang down too low into your swing path.
PC Specs (Quick Mention)
While not strictly space, your PC needs to be able to run the software. For GSPro, the minimum is a GTX 1070 and 16GB RAM. If you're going 4K, you'll want something much beefier (RTX 3070/4070 or better). Don't build an awesome physical space only to have a laggy, pixelated experience.
Who Should NOT Build a Sim (Based on Space)
This is my signature anti-recommendation. I’m not here to sell you anything; I’m here to tell you the truth.
Do NOT attempt to build a full golf simulator if your space has:
- Ceiling Height Under 8.5 Feet: Seriously, just don't. Unless you're 5 feet tall and only hitting wedges, you will hit your ceiling. It's dangerous, it's frustrating, and it will subconsciously mess with your swing. You'll spend more time worrying about hitting the ceiling than you will about hitting the ball.
- Width Under 10 Feet (especially if sharing with lefties/righties): If you're a solo golfer who always hits straight, maybe 9 feet could work, but it's risky. For any amount of comfort or safety, 10 feet is the absolute minimum. You'll feel claustrophobic and limited.
- Depth Under 14-15 Feet: You'll be too close to the screen, risking bounce-back and a poor image. You'll also be severely limited in your choice of launch monitor and projector. Trying to cram everything into a tight space just leads to a compromised experience.
What to do instead if your space is too small: If your space is too small for a full sim, consider a simple net setup with a portable launch monitor (like a Garmin R10 or FlightScope Mevo+). You can get valuable data outdoors or into a basic net without the safety concerns or massive investment of a full projection setup. Or, just stick to the driving range. It's cheaper, safer, and probably more enjoyable than a cramped, dangerous home sim.
The Hidden Costs of Space (It's Not Just Components)
You've measured, you've planned, you've decided your space works. Great! Now, remember that the space itself comes with costs beyond the launch monitor and projector.
- Impact Screen & Enclosure: A good quality screen (Carl's Place Premium or similar) for a 10'x8' setup can run $500-$1000. A full enclosure adds another $1000-$