How to Build a Backyard Putting Green, Step by Step

This guide is for confident DIYers and for homeowners who want to understand what a good builder should be doing. It walks through each stage in order, with the tolerances and checks that separate a green that putts true from one that develops dips. Plan the layout and surface type first with our backyard putting green guide.

What tools and materials do you need?

• Sod cutter or shovel, wheelbarrow and rake
• Plate compactor (rented) and a hand tamper for edges
• Long straightedge (8 to 10 ft aluminum screed) and a level, or a rotary laser
• Crushed rock base and fine leveling material such as quarry fines or decomposed granite
• Putting turf, fringe turf, seam tape and adhesive
• Cups, a hole cutter sized for the cups, and flags
• Edging (bender board, steel or concrete curb) and turf nails
• Kiln-dried silica sand infill, a drop spreader and a stiff broom or power brush
• Lawn roller (water-filled)

Step 1: Lay out and excavate

Mark the outline, including fringe, with paint. Call utility locating before you dig. Excavate 4 to 6 in below the planned finished surface across the whole area, deeper where soil is soft. Remove roots and organic material; they decompose and leave hollows.

Compact the subgrade before adding anything. A soft subgrade will settle under the base no matter how well the base is compacted.

Step 2: Install edging and drainage

Install the perimeter edging so its top sits at the finished base height. Edging holds the base in and gives the turf a firm edge to fasten to. On clay or poorly draining soils, add a perforated drain in a gravel trench along the low side; see sub-surface drainage.

Step 3: Build and compact the base

Spread crushed rock in lifts of no more than 2 in, moisten it lightly and compact each lift with the plate compactor in overlapping passes. Two lifts give a total of 3 to 4 in compacted. Compaction is the most important single factor in a green that stays true. See base preparation for compaction technique, and the base material calculator for quantities.

Step 4: Shape contours in the leveling layer

Spread 1/2 to 1 in of fine leveling material over the base and shape the contours in this layer. Work in smooth, broad shapes; short, sharp undulations play poorly.

• Keep slopes mostly between 1 and 2 percent, up to 3 percent in limited areas.
• Keep a 3 ft radius around each cup within about 1 percent.
• Avoid ridges sharper than a smooth curve across several feet.
• Moisten and compact the leveling layer, then recheck.

Test roll before the turf goes down

Roll several golf balls across the compacted leveling layer from different directions. They will roll slowly, but they reveal the direction of break. If a ball moves in a direction you did not plan, adjust now. Once turf is down, fixing the base means lifting it.

Step 5: Install the cups

Mark each cup position. Dig a hole through the base slightly larger than the cup and deep enough that the cup's top edge will finish about 1 in below the turf surface (standard golf cups are 4.25 in in diameter). Set the cup in place, pack base material firmly around it so it cannot move, and make sure the rim is level. Some builders set a small amount of concrete around the cup for permanence.

Many cups are installed after the turf, by cutting the turf with a hole cutter directly above a cup set in the base. Either way, the cup must be firmly bedded and perfectly level, or the hole will play unfairly from one side.

Step 6: Lay and seam the putting turf

Unroll the turf and let it relax in the sun for an hour or more to remove wrinkles. Position it so seams fall in low-traffic areas, away from cups and not across the main putting lines when possible. Many putting turfs have a subtle grain, so run all pieces in the same direction.

Cut seams carefully along the stitch rows, apply seam tape and adhesive, press the edges together without trapping fibers, and weight them while they cure. On a short putting surface, a poor seam is far more visible and playable than on a lawn. Our seaming guide covers technique and the common faults.

Cut the turf over each cup with a sharp hole cutter, then fit the cup liner flush with the hole edge.

Step 7: Add the fringe

Fringe turf, usually 1 to 1.5 in pile, frames the green and gives you a place to chip from. Butt the fringe against the putting turf edge and seam the two together on a common seam tape, or attach both to the edging. Trim the putting turf edge cleanly first; a ragged join will show. Design choices for fringe height and chipping areas are in chipping, fringe and bunkers.

Secure the outer perimeter with nails every 4 to 6 in into the edging or base.

Step 8: Spread and brush in sand infill

For sand-filled greens, apply infill in several light passes rather than all at once. Spread a thin layer with a drop spreader, brush it in with a stiff broom or power brush against the grain, then repeat until the sand reaches the depth specified by the turf manufacturer, often just below the fiber tips. Rates vary by product, so follow the spec sheet and use our infill calculator to estimate pounds. Use dry, clean sand; damp sand clumps and will not settle evenly. See silica sand for grades.

Step 9: Roll, test and adjust

Roll the green with a water-filled lawn roller in several directions to settle the infill and firm the surface. Then roll balls across it. Expect speed and break to change over the first few weeks as sand settles. Measure speed with a ramp as described in green speed and the Stimpmeter, and adjust by brushing or adding sand.

Quality checks before you call it finished

Frequently asked questions

How long does it take to build a putting green yourself?

For a 300 to 500 sq ft green, plan two to four full weekends for one or two people. Excavation and base work take the most time and effort. Shaping contours carefully and checking them is slower than most people expect. Turf laying, seaming and infill can often be done in one or two days once the base is right.

Can I build a putting green on top of existing grass?

Not well. Grass and roots decompose under the turf, leaving soft spots and dips, and the soil beneath is not compacted to the standard a green needs. Strip the grass and build a proper crushed rock base. For a temporary or rental situation, a roll-out green on a firm pad is a better option than laying turf over a lawn.

What is the best base material for a putting green?

A well-graded crushed rock that compacts firmly, topped with a fine leveling layer such as quarry fines or decomposed granite, is the common approach. The coarse layer provides strength and drainage, while the fine layer allows precise shaping. Avoid round pea gravel, which never compacts into a stable surface.

Should I water the base before laying turf?

Light moistening during compaction helps the base reach its densest state. Before laying turf, the base should be firm and only slightly damp, not wet. A wet surface can be rutted by foot traffic during installation and may soften around cups. Let it dry out for a day if heavy rain falls during the build.