Both routes end in a lawn. The difference is what you're trading — ready lawn buys you time and certainty for about three times the money; seed saves the money and asks for a season of patience and attention.
| Ready lawn | Grass seed | |
|---|---|---|
| Cost supplied and laid/sown | ~$38/m² | ~$12/m² |
| Usable | 2 weeks | 3–4 months |
| Fully established | 6 weeks | A full season |
| Weed pressure | Very low — turf arrives weed-free | High — bare soil germinates weeds too |
| Erosion control | Immediate | None until cover establishes |
| Best time to install | Most of the year | March–May, or September–October |
| Grass variety choice | Limited to what growers supply | Wide — any blend you like |
| Works on slopes | Yes | Poorly — seed washes off |
When ready lawn is the right call
- The house is going on the market and needs to look finished now.
- New build with bare clay that's eroding into the driveway every time it rains.
- Any slope or bank, where seed simply washes away before it germinates.
- You have kids or a dog and there's no realistic way to keep everyone off a seeded area for three months.
- It's the wrong time of year to sow and you don't want to wait until autumn.
When grass seed is the right call
- Budget matters and time doesn't.
- The existing lawn is structurally sound but thin — overseeding is far cheaper than replacing it.
- You want a specific blend: fine fescue for looks, hard-wearing rye for a family lawn, shade fescue under trees.
- It's autumn. March to May in Auckland is when seed works best, and it's the cheapest good lawn you'll ever get.
- Large areas where the turf cost would be prohibitive.
What both need: the ground underneath
This is the part people skip, and it's the part that decides the outcome. Whether you're laying turf or sowing seed, the lawn will only ever be as good as what's below it. On a typical Auckland new build that means removing builder's spoil, breaking up compaction from truck traffic, bringing in screened topsoil to a real depth, and grading so water runs away from the house rather than ponding in the middle of the lawn.
Turf laid on 20mm of soil over compacted clay looks perfect for one winter and dies in patches through its first summer. That failure is almost always blamed on the turf. It's virtually never the turf.
Quick answers
Is ready lawn better than grass seed?
Ready lawn gives an instant, weed-free, usable lawn and works on slopes where seed washes away, but it costs roughly three times as much — about $38/m² supplied and laid against $12/m² for seed. Seed is the better value where you can wait a season and the ground is flat.
How much cheaper is grass seed than turf in New Zealand?
Roughly a third of the cost. Supplied and sown seed runs around $12 per square metre against about $38 per square metre for ready lawn supplied and laid, both including ground preparation.
Can I lay ready lawn at any time of year?
Almost. Ready lawn can go down most of the year in Auckland provided you can water it daily for the first fortnight. Mid-summer installation is the riskiest because of the watering demand — spring and autumn are easier on both the turf and your water bill.