Squash is a racket sport played by either two or four players in a small four-walled room. The international court size is 32 feet long and 21 feet wide. The front wall has an "out" line 15 feet above the floor, connected by another "out" line that intersects with the first "out" line on the back wall at seven feet above the floor. There is a "service line" on the front wall that is six feet above the floor with a 19-inch high "tin" that acts as a net. The floor is marked with a half-court line, and then divided again into two rear quarter courts and two service boxes.
Find a location that easily converts to a squash court. A squash court can be constructed outside or inside.
Measure the square of the walls and mark with chalk tape. The square should be 32 feet by 21 feet.
Construct the front and two side walls by cementing rebar to a foundation and then piling cement blocks 15 feet above the ground. If you mortar between the walls, include the mortar in the height of the wall.
Cut a door into the glass or acrylic plastic sheet of the final wall. Make sure the door lines on the inside of the court are smooth. All hinges and the like should be on the exterior.
Cover the block walls with plaster.
Smooth the plaster and paint.
Assemble the wood floor.
Install the board and tin. The board is the lowest horizontal line along the front wall, beneath which is the tin. The top of the board should be 19 inches above the floor.
Paint the cut line six feet above the floor on the same wall as the tin.
Paint the service zone 6.6 feet above the cut line.
Paint a line 18 feet from the front wall and 14 feet from the back wall.
Paint a line that bisects the court horizontally at the centre of the court.
Paint the back outline 17 feet from the floor on the back wall.
You do not need to mortar between the blocks if you pour concrete into the walls when they are standing. The door needs to open into the court and be strong enough for a player to crash into. The hardwood should be light and assembled using the tongue and groove method, and the floor should have give. It may be necessary to put rubber underneath before you lay out the hardwood.