Basketball Court Line Marking

Quick answer: Line Marking Australia marks basketball courts to FIBA dimensions: a 28 m × 15 m court, a 6.75 m three-point line and 50 mm wide lines. We mark full courts, half courts and multi-sport courts on concrete, asphalt and acrylic surfaces, and we check every measurement with laser and string lines before any paint goes down.

Why an uneven three-point arc matters

A basketball club in Keysborough called us about their outdoor court. The three-point arc wasn't symmetrical. One side was 50mm closer to the basket than the other. Players noticed during games, and the court couldn't host official competitions. They needed it fixed properly.

We stripped the existing marking and started fresh. Laser measurement from the basket centre for perfect arc geometry. String lines ensuring the key was perfectly centred. Every dimension verified against FIBA specifications before paint. The court passed Basketball Victoria inspection and hosted their next home games.

We made a three-point arc error at a school in Coburg in 2014. We were 35mm out at one end of the arc. Doesn't sound like much, but officials and players notice instantly. We had to grind off the incorrect arc and remark it at our cost, around $1,800. That expensive lesson taught us our current verification process.

Which court standards do we follow?

Competition courts follow the FIBA Official Basketball Rules for court size, key, three-point line and line width. Basketball Australia and the state associations use the FIBA court for their competitions. For backyard and driveway half courts we can scale the layout to fit your space and tell you which lines are full size. If the court also hosts netball or futsal, see multi-sport court line marking, and if the surface is cracked or worn, start with court resurfacing so the new lines last.

Building a new basketball court?

Line Marking Australia also builds new basketball courts from the ground up: site checks, base and slab, surface, line marking, posts, nets, fencing and lighting, with council and safety compliance on every job. See basketball court construction for sizes, surfaces, costs and approvals. Backyard half courts start from about $10,000 installed (published Australian builder pricing, 2026).

Standards and council rules we follow for basketball courts

• FIBA Official Basketball Rules, used by Basketball Australia and the state associations: a 28 m by 15 m court with lines 50 mm wide in one colour.
• Three-point line 6.75 m from the centre of the basket, and 6.60 m in the corners, 0.90 m in from the sideline.
• Key (restricted area) 4.90 m wide and 5.80 m long, free-throw line 5.80 m from the inside edge of the end line, and a 1.25 m no-charge semicircle under the basket.
• At least 2 m of clear run-off around the court where the site allows.
• Half courts and backyard courts are scaled to the space, and we tell you which lines are not full size.

Council and site rules on every court and field job

• Approval first. On council reserves, school grounds and club facilities we work only with the owner's written approval, plus a works permit where the council asks for one, and we follow the council's open space and reserve conditions.
• Safety paperwork. A Safe Work Method Statement and site induction under the Model WHS Regulations, with the work area coned or fenced off until the paint has cured.
• Insurance. Certificates of currency for public liability and workers compensation, at the level the council, school or club specifies.
• Working with children. On school and childcare sites our crews hold the state check, such as a Working with Children Check or Queensland blue card.
• Stormwater. No paint, wash water or grit goes into drains, in line with state EPA rules. We contain wash water and take waste away.
• Right paint for the surface. Court paint the surface maker approves, so your surface warranty stays intact, and grass-safe line paint on turf.
• Hours and bookings. Work is timed around council noise local laws and the club, school or council booking calendar.