Enter your yard size — get seed vs sod material costs side by side, plus the extras people forget to budget.
The new-lawn math
seed lawn = seed + starter fert + soil prep (~$0.10–0.20/sq ft DIY)
sod lawn = area × sod price + delivery (~$0.35–0.85/sq ft material)
The two paths aren't close on price, and that's fine — they're buying different things. Seed buys a cheap lawn you wait a season for; sod buys an expensive lawn you have tomorrow. The right answer depends entirely on whether your constraint is money or time, and on slopes where seed washes away, sod is sometimes the only option that works.
A worked example
A 3,000 sq ft yard: seeding runs about 15 lbs of seed (~$60) plus starter fertilizer and some compost — call it $250–350 all in. Sodding the same yard is roughly $1,800 in material before delivery and the day of labor. That ~$1,500 gap is the price of skipping the establishment season — worth it for a front yard or a slope, rarely for a big back yard.
Pricing it precisely
The seed calculator nails the exact seed quantity for your grass, the sod calculator breaks sod into pallets and rolls, and the topsoil and compost calculators size the soil prep. Whichever you choose, the establishment schedule gets the new grass through its fragile first weeks.
Frequently asked questions
How much does it cost to put in a new lawn?
Seeding a lawn yourself runs roughly $0.10–0.20 per square foot in materials (seed, starter fertilizer, soil prep) — call it $200–500 for a typical yard. Sod is $0.35–0.85/sq ft in material, several times more, plus heavier labor. Hiring either out multiplies it. This calculator prices your yard both ways.
Is it cheaper to seed or sod a lawn?
Seed wins on cost by a wide margin — often 5–10× cheaper in materials — because you're buying grass by the seed instead of by the grown roll. Sod's premium buys instant results, an any-season install window, weed-free establishment, and erosion control on slopes. The gap is the price of not waiting a season.
What's the cheapest way to establish a lawn?
Seeding at the right time (early fall for cool-season, late spring for warm-season), doing your own soil prep, and buying seed and starter fertilizer separately rather than pricey all-in-one patch products. The biggest hidden cost of the cheap route is patience — a seeded lawn takes a full season to look established.
What costs do people forget when budgeting a new lawn?
Soil prep (topsoil or compost to fix bad ground), starter fertilizer, the water bill for daily watering through establishment, tool rentals (tiller, aerator, roller), and for sod, the delivery fee and the short clock that forces install-day labor. The materials are only part of the real number.