A squash court looks deceptively simple: four walls, a wooden floor, and a handful of red lines. Yet the quality of play on that court depends on details most people never see, from the flatness of the wall surface to the moisture content of the concrete slab beneath the floor. Whether you are adding a court to a school, a residential community, a fitness club, or a private home, the decisions made during planning will shape how the court plays for decades.
This guide walks through the main considerations to work through before construction begins, so you can have informed conversations with architects, contractors, and court specialists.
Start With the Space: Dimensions and Clear Height
The first question is whether your available space can accommodate a regulation court. The World Squash Federation (WSF) publishes the dimensions used for singles courts worldwide. Building to them means the court will feel familiar to any visiting player and can host sanctioned events if you ever want it to.
| Element | Metric | Imperial (approx.) |
|---|---|---|
| Court length (front wall to back wall) | 9.75 m | 32 ft |
| Court width | 6.40 m | 21 ft |
| Front wall out line | 4.57 m | 15 ft |
| Back wall out line | 2.13 m | 7 ft |
| Service line on front wall | 1.78 m | 5 ft 10 in |
| Top of tin | 0.48 m | 19 in |
| Short line (from front wall) | 5.44 m | 17 ft 10 in |
| Service box | 1.60 m square | 5 ft 3 in square |
| Minimum clear height above floor | 5.64 m | 18 ft 6 in |
Always confirm the current figures and measuring conventions with the governing body before drawings are finalized, since tolerances matter on a court.
The clear height is the figure that catches many projects out. It is measured to the lowest obstruction, not to the roof deck, so beams, ductwork, sprinkler heads, and light fittings all count. Many designers aim for more than the minimum to give lobbed shots extra room.
Plan for the space around the court as well: a corridor or gallery behind the back wall, room for the door to open, a viewing area if you expect spectators, and access for materials during construction. If you are considering a doubles court, which in North America is typically 45 feet long and 25 feet wide, the footprint and wall heights change significantly, so settle on the format early.
The Structure Behind the Walls
A squash ball strikes the walls hundreds of times in a single game, and players notice immediately when one part of a wall responds differently from the rest. The structure behind the playing surface therefore needs to be solid, flat, plumb, and free of hollow areas. Dense masonry has long been the traditional backing, while engineered framing is used with certain panel systems.
The concrete slab matters just as much. It should be level within tight tolerances, fully cured, and tested for moisture before any flooring is installed. Moisture rising from a slab that looks dry on the surface is one of the most common causes of later floor problems. If the building has structural movement joints, coordinate with the designer so they do not run across a playing wall or through the middle of the floor.
Choosing a Wall System
There are three main approaches to the playing walls, and many courts combine them.
Plaster
Specialist hard plaster systems applied over masonry have been used for generations. Properly applied, they produce a dense, consistent surface with a reliable rebound. They need a suitable substrate, skilled application, and enough curing time before painting and play, so they suit projects where the schedule allows for wet trades.
Panel Systems
Prefabricated panels fixed to a supporting framework offer a factory-controlled surface and faster installation. They are often a practical choice for conversions, upper floors, or buildings where heavy masonry is not feasible. Quality varies between products, so ask how the panels are supported and how the system has performed on courts that have been in use for several years.
Glass
Tempered glass back walls are now common in clubs because they let coaches, waiting players, and spectators watch without opening the door. Fully glass showcourts exist for professional events but are a specialized investment. Glass walls require precise fixing hardware and a carefully designed door, and they affect the lighting design, since glass does not reflect light the way a white wall does.
The right combination depends on budget, the building, and how the court will be used. Working with a team experienced in building dedicated squash courts helps make sure the wall system, structure, and floor are specified together rather than as separate, disconnected decisions.
Flooring Is a System, Not Just a Surface
Squash floors are typically light-colored hardwood, most often maple, laid over a sprung subfloor that absorbs impact and gives slightly underfoot. The floor must be consistent across the whole court, with no dead spots, and stable through seasonal changes in temperature and humidity. From a planning perspective, the key point is that the floor depends on the slab below it and the climate control around it. Allow time and budget for moisture testing, a vapor barrier, and acclimating the timber on site before installation.
Lighting, Ventilation, and Climate Control
Good court lighting is bright, even, and free of glare and shadows. Fixtures are usually positioned so they are protected from ball strikes and do not sit directly in a player’s line of sight when tracking a high ball. Governing-body guidance sets minimum light levels, with competition courts requiring considerably more light than recreational ones. LED fittings have become the norm because they deliver consistent output, run cooler, and need less maintenance.
Ventilation is easy to underestimate. Two players in an enclosed box generate a lot of heat and moisture in a short time. Without adequate air movement, condensation can form on the walls, making the ball skid unpredictably and the floor slippery. A properly sized HVAC system also protects the hardwood by keeping humidity stable year round, which is especially important in humid climates or in buildings where heating and cooling are switched off overnight.
Markings, the Tin, and Fittings
Court lines are painted red and are 50 mm (about 2 inches) wide. They should be applied with paint suited to the surface so they stay crisp without peeling or becoming slippery. The tin, the strip across the bottom of the front wall, is built to make a distinct sound when struck, so players and referees can tell instantly when a ball is down.
The door should sit flush with the back wall when closed, with recessed hardware, so a ball hitting it behaves just like a ball hitting the rest of the wall. Details like this are easy to overlook on drawings and expensive to correct later.
Budget and Timeline Factors
Every project is different, so rather than relying on a single headline figure, it helps to understand what drives cost and schedule:
- New build versus conversion: Converting an existing room can save on structure but may require work to meet clear-height and floor-level requirements.
- Wall system: Plaster, panels, and glass differ in material cost, installation time, and long-term upkeep.
- Slab condition: Leveling or moisture mitigation on an existing slab can add time and cost.
- Mechanical systems: Dedicated HVAC and lighting are part of the court, not optional extras.
- Permits and site access: Local approvals and how easily materials can be brought into the space both affect the schedule.
It also pays to think past opening day. Floors need periodic refinishing, walls need repainting, and fittings wear over time, so consider how design support and long-term upkeep will be handled once the court is in regular use.
Questions to Ask Before You Commit
Whoever you work with, these questions will help you compare proposals on more than price:
- How many squash courts has the team built, and can you visit one or speak with its owner?
- Which dimensional and performance standards will the court be built to?
- Which wall system is proposed, and why does it suit this building?
- How will slab moisture be tested and managed?
- How long will flooring materials acclimate on site before installation?
- What warranties cover the walls, floor, and glass, and what maintenance do those warranties require?
- What ongoing care will the court need during its first few years?
Firms that focus specifically on the sport, such as Total Squash Court, can generally answer these questions in detail because the same issues come up on every project. General contractors can build excellent courts too, but it is worth confirming that they understand how each element affects play.
Final Thoughts
A well-planned squash court is one players stop thinking about: the ball bounces true, the footing is reliable, and the walls respond the same way everywhere. Getting there depends on decisions made long before the first wall goes up, covering the space, the structure, the wall system, the floor, and the building services that keep everything stable. Time spent on these questions at the planning stage costs far less than correcting them once the court is open.
