Serving Chicagoland and Abroad
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The basement is the best room in the house for a gym and the easiest one to get wrong. CS Gym Design is a design-build firm that does this specific thing across the North Shore, the western suburbs and the city: we design the room, source the equipment through our relationships with more than thirty brands, and manage the construction. One team from empty basement to finished gym.
Most basement gyms are built by remodelers who are excellent at basements and are meeting the equipment for the first time. The gaps show up later: a rack that will not clear the ceiling, a platform in the wrong place, rubber laid straight onto an untreated slab, a sauna on a shared circuit. We start from how you train and work backwards into the room.
Photographs, plans and the constraints we solved on each.
Wilmette, North Shore
An existing home gym that needed the recovery half built. We sourced and installed an infrared sauna and a cold plunge, which meant solving drainage, ventilation and dedicated power before either unit was ordered.
View the project →Elmhurst
The client already owned equipment sitting in a dark unfinished storage area. We divided the space to create a distinct room, used slat wall as both a design feature and to hide the closet and laundry doors, and added a red light therapy sauna. The slat walls also cut noise and vibration.
View the project →Chicago
An unfinished basement in a 1916 vintage home, done alongside the client's remodeling contractors. Two distinct zones, heavy lifting and conditioning, and a completely custom platform built to fit a narrow area so the existing floor drain never had to move.
View the project →In roughly the order they will cost you money if nobody checks them first.
The first number we take, and the one that quietly decides the equipment list. Overhead pressing, pull-ups, rope work and box jumps all need clearance a finished basement rarely has, and every flooring system you add takes some of it back. Sometimes the answer is excavation. More often it is choosing equipment that respects the room, which is a problem worth solving on paper rather than on delivery day.
A basement slab is the best training surface in the house: on grade, no deflection, nothing below to transmit into. The tradeoff is moisture. Rubber laid straight onto an untreated slab traps it, and you find out through the smell before you find out through the floor. Moisture mitigation goes under the finish floor, and it is the line item people cut and then pay for twice.
Basement gyms usually sit under a kitchen or a bedroom, and a dropped deadlift travels through structure, not air. Isolation is a stack: the right subfloor, a platform where the loaded lifts actually happen, and dense wall surfaces. Getting this right is the difference between a gym used at 5am and a gym used when the house is empty.
A stair turn, a door width and a landing decide whether a rack arrives assembled, arrives in pieces, or does not arrive. We measure the path before specifying, and we assemble in place when the path says so. This is the single most common reason a basement gym plan falls apart after the deposit.
Basements run cool and still, and a training room does not stay that way. Dedicated conditioning, real exhaust and a dehumidification strategy keep the room usable in August and keep equipment from corroding. Saunas and plunges raise the stakes on all three.
Treadmills, an infrared sauna and a cold plunge each want their own circuit, and none of them want to share with the freezer already down there. Panel capacity and circuit placement get decided during design, because chasing conduit through a finished ceiling later is its own small renovation.
The most common failure in a basement gym is that it feels like a basement. Layered lighting at the right color temperature, mirror placement that borrows what light exists, and finishes that are not all grey. This is the part that decides whether the room gets used.
We are based in the Chicago area and take basement projects across it. Towns with a dedicated page are linked below, and the rest of our service area, including the city, the western suburbs and the Fox Valley, is on the areas we serve page.
It is usually the best place in the house. The slab is on grade, so there is no floor deflection and nothing underneath to transmit sound into, and basements tend to have the uninterrupted square footage a training floor needs. The three things that decide whether it works are ceiling height, moisture control and how you get equipment down the stairs. All three are solvable, and all three are cheaper to solve during design than after.
It depends entirely on what you train. A rower, a bike, dumbbells and a functional trainer are comfortable in a standard basement. Overhead pressing, pull-ups and jump rope need meaningfully more, and a tall lifter pressing overhead needs more again. Bring us the height before you buy anything: we would rather specify a wall-mounted system that suits the room than watch a rack get returned.
You need moisture mitigation under the finish floor, and if the basement has ever taken water you need to deal with the source first. Rubber and turf both trap what the slab gives off. This is the least visible money in the whole project and the most expensive to retrofit.
You can reduce it a great deal. Dropped barbells transmit through structure, so the fix is a stack rather than a single product: subfloor, a dedicated lifting platform where the heavy work happens, and dense wall surfaces. On our Elmhurst basement project the slat walls did double duty as a design feature and as noise and vibration control.
Most basement projects land between roughly $15,000 and $40,000 for a serious, well-built training room, and between $40,000 and $100,000 once the room itself gets built out with mirrored walls, sound-isolating flooring, dedicated HVAC and storage millwork. Adding recovery, a sauna and a cold plunge with proper drainage and ventilation, moves a project into the six figures. Our full cost breakdown walks through the five decisions that actually move the number.
Yes. Wilmette, Winnetka, Kenilworth, Glenview, Glencoe, Northfield, Northbrook, Highland Park, Evanston, Deerfield and Lake Forest, along with the rest of Chicagoland and the city itself. We have completed work in Wilmette and Winnetka, and our full service area is on the areas we serve page.
Regularly. On the Chicago basement project we came in as the gym designers alongside the client's remodeling contractors, and on new construction we work off the architect's drawings. We can run the whole build or handle design and equipment while someone else swings the hammer.
