DIY vs Hire Lawn Mowing: Which Costs Less in 2026?

Is $1,105.00 the right DIY cost for 26 mows?

On the defaults — 26 mows, a $50.00 pro rate, $5.00 of supplies, 1.5 hours per mow and your time at $25.00 an hour — DIY costs $1,105.00 ($42.50 a mow), the pro costs $1,300.00 ($50.00 a mow), and DIY wins by $195.00. A professional lawn service typically charges $30–$80 per mow, with $50 a mow a common middle quote for an average suburban lawn; a weekly mowing season runs about 26 mows, roughly April through October. A homeowner’s DIY cost per mow is small — gas, mower wear and trimmer line typically run about $5 a mow — but the time is the real cost: about 1.5 hours per mow for an average lawn. The comparison only makes sense when your own hours have a price: value them at what your time is worth to you.

Three things about the model are worth stating plainly. First, the DIY cost is the mows times the per-mow cost — 26 × ($5.00 + 1.5 × $25.00) = 26 × $42.50 = $1,105.00. Second, the pro cost is the mows times the pro rate — 26 × $50.00 = $1,300.00. And third, the winner is the lower total — $1,300.00 − $1,105.00 = $195.00 to DIY, or $42.50 a mow against the $50.00 pro rate; all listed in Accuracy & limitations.

The worked example, line by line

Setup: 26 mows, pro rate $50.00 a mow, supplies $5.00 a mow, 1.5 hours per mow, hourly value $25.00.

Line 1 — the time cost. The time cost per mow is 1.5 hours × $25.00 an hour = $37.50.

Line 2 — the DIY cost per mow. The DIY cost per mow is $5.00 + $37.50 = $42.50.

Line 3 — the DIY total. The DIY total is 26 × $42.50 = $1,105.00.

Line 4 — the pro total. The pro total is 26 × $50.00 = $1,300.00.

Line 5 — the winner. The pro total minus the DIY total is $1,300.00 − $1,105.00 = $195.00, so DIY wins by $195.00.

Line 6 — the check. $1,105.00 + $195.00 = $1,300.00, the pro quote; and $42.50 × 26 = $1,105.00, the DIY total.

Every branch, checked

Pro rate $40/mow: DIY $1,105.00 ($42.50/mow); pro $1,040.00 ($40.00/mow) — Hiring wins by $65.00 — Against a $40.00-a-mow quote the pro total is only $1,040.00 — at the bottom of the typical $30–$80 range — and hiring wins by $65.00, because the pro total is below the $1,105.00 DIY total.

40 mows, 2 hours per mow: DIY $2,200.00 ($55.00/mow); pro $2,000.00 ($50.00/mow) — Hiring wins by $200.00 — With 40 mows at 2 hours each the time cost is 80 hours valued at $25.00 an hour — $2,000.00 of time alone — so DIY costs $2,200.00 and hiring wins by $200.00. The big lawn flips to hiring.

10 mows, 1 hour per mow: DIY $300.00 ($30.00/mow); pro $500.00 ($50.00/mow) — DIY wins by $200.00 — With only 10 mows the season is short and the time cost is small — DIY costs $300.00 against a $500.00 quote, so DIY wins by $200.00.

Hourly value $50: DIY $2,080.00 ($80.00/mow); pro $1,300.00 ($50.00/mow) — Hiring wins by $780.00 — Valuing your time at $50.00 an hour doubles the time cost to $1,950.00, so DIY costs $2,080.00 — $80.00 a mow — and hiring wins by $780.00. The only input that flips the answer without changing the mows.

Supplies $15/mow: DIY $1,365.00 ($52.50/mow); pro $1,300.00 ($50.00/mow) — Hiring wins by $65.00 — At $15.00 of supplies a mow — gas, wear and line on a big or rough lawn — DIY costs $1,365.00 and hiring wins by $65.00. Supplies alone can flip the answer.

Pro rate $65/mow: DIY $1,105.00 ($42.50/mow); pro $1,690.00 ($65.00/mow) — DIY wins by $585.00 — Against a $65.00-a-mow quote the pro total is $1,690.00, and DIY wins by $585.00 — the quote is near the top of the typical $30–$80 range.

Hours per mow 1: DIY $780.00 ($30.00/mow); pro $1,300.00 ($50.00/mow) — DIY wins by $520.00 — If each mow takes only 1 hour, the time cost falls to $650.00, so DIY costs $780.00 — $30.00 a mow — and DIY wins by $520.00.

The reverses, worked backwards

Smallest whole-cent pro rate where DIY wins: At the displayed $42.51 the figures are DIY $1,105.00 ($42.50/mow); pro $1,105.26 ($42.51/mow) — DIY wins by $0.26. At the displayed $42.51 the pro total is $1,105.26 and DIY wins by $0.26. At $42.50 a mow the pro total is $1,105.00 — an exact tie with the $1,105.00 DIY cost, so $42.51 is the smallest whole-cent pro rate where DIY wins. Note: at $42.50 the pro rate EQUALS the DIY per-mow cost of $42.50, yet the totals tie exactly — check the totals, not the rates.

Smallest whole-dollar hourly value where hiring WINS: At the displayed $31.00 the figures are DIY $1,339.00 ($51.50/mow); pro $1,300.00 ($50.00/mow) — Hiring wins by $39.00. At the displayed $31.00 the DIY cost is $1,339.00 and hiring wins by $39.00. At $30.00 an hour the DIY cost is $1,300.00 — an exact tie with the $1,300.00 quote — so $31.00 is the smallest whole-dollar hourly value where hiring wins.

Largest whole-dollar hourly value where DIY still wins by at least $100.00: At the displayed $27.00 the figures are DIY $1,183.00 ($45.50/mow); pro $1,300.00 ($50.00/mow) — DIY wins by $117.00. At the displayed $27.00 the DIY cost is $1,183.00 and DIY wins by $117.00. At $28.00 an hour the DIY cost is $1,222.00 and DIY wins by $78.00 — below $100 — so $27.00 is the largest whole-dollar hourly value where DIY still wins by at least $100.00.

Smallest whole-cent pro rate where DIY wins by at least $100.00: At the displayed $46.35 the figures are DIY $1,105.00 ($42.50/mow); pro $1,205.10 ($46.35/mow) — DIY wins by $100.10. At the displayed $46.35 the pro total is $1,205.10 and DIY wins by $100.10. At $46.34 a mow the pro total is $1,204.84 and DIY wins by $99.84 — below $100 — so $46.35 is the smallest whole-cent pro rate where DIY wins by at least $100.00. The exact rate is 1,205 ÷ 26 = $46.346… a mow.

Smallest whole-dollar supplies where hiring WINS: At the displayed $13.00 the figures are DIY $1,313.00 ($50.50/mow); pro $1,300.00 ($50.00/mow) — Hiring wins by $13.00. At the displayed $13.00 the DIY cost is $1,313.00 and hiring wins by $13.00. At $12.00 of supplies the DIY cost is $1,287.00 and DIY wins by $13.00; at exactly $12.50 the totals tie at $1,300.00 — so $13.00 is the smallest whole-dollar supplies where hiring wins.

Smallest whole-cent pro rate where DIY wins by at least $500.00: At the displayed $61.74 the figures are DIY $1,105.00 ($42.50/mow); pro $1,605.24 ($61.74/mow) — DIY wins by $500.24. At the displayed $61.74 the pro total is $1,605.24 and DIY wins by $500.24. At $61.73 a mow the pro total is $1,604.98 and DIY wins by $499.98 — below $500 — so $61.74 is the smallest whole-cent pro rate where DIY wins by at least $500.00. The exact rate is 1,605 ÷ 26 = $61.731… a mow.

What the defaults assume

The defaults are 26 mows, a $50.00 pro rate, $5.00 of supplies, 1.5 hours per mow and your time at $25.00 an hour — DIY $1,105.00 ($42.50/mow); pro $1,300.00 ($50.00/mow) — DIY wins by $195.00. With Pro rate $40/mow, DIY $1,105.00 ($42.50/mow); pro $1,040.00 ($40.00/mow) — Hiring wins by $65.00. With 40 mows, 2 hours per mow, DIY $2,200.00 ($55.00/mow); pro $2,000.00 ($50.00/mow) — Hiring wins by $200.00. With 10 mows, 1 hour per mow, DIY $300.00 ($30.00/mow); pro $500.00 ($50.00/mow) — DIY wins by $200.00. With Hourly value $50, DIY $2,080.00 ($80.00/mow); pro $1,300.00 ($50.00/mow) — Hiring wins by $780.00. With Supplies $15/mow, DIY $1,365.00 ($52.50/mow); pro $1,300.00 ($50.00/mow) — Hiring wins by $65.00. With Pro rate $65/mow, DIY $1,105.00 ($42.50/mow); pro $1,690.00 ($65.00/mow) — DIY wins by $585.00. With Hours per mow 1, DIY $780.00 ($30.00/mow); pro $1,300.00 ($50.00/mow) — DIY wins by $520.00. With 0 mows, DIY $0.00 ($42.50/mow); pro $0.00 ($50.00/mow) — exact tie. With 52 mows, 2 hours per mow, DIY $2,860.00 ($55.00/mow); pro $2,600.00 ($50.00/mow) — Hiring wins by $260.00. With Hourly value $0, DIY $130.00 ($5.00/mow); pro $1,300.00 ($50.00/mow) — DIY wins by $1,170.00. With Supplies $0, DIY $975.00 ($37.50/mow); pro $1,300.00 ($50.00/mow) — DIY wins by $325.00. With Pro rate $42.50/mow, DIY $1,105.00 ($42.50/mow); pro $1,105.00 ($42.50/mow) — exact tie. With Hours per mow 0, DIY $130.00 ($5.00/mow); pro $1,300.00 ($50.00/mow) — DIY wins by $1,170.00. With Pro rate $100/mow, DIY $1,105.00 ($42.50/mow); pro $2,600.00 ($100.00/mow) — DIY wins by $1,495.00.

Output · formula · meaning

Who uses this

• The homeowner with a $50.00-a-mow quote and 26 mows: they learn DIY costs $1,105.00 and wins by $195.00 — and they check the $42.51 reverse to see the smallest pro rate where DIY still wins.
• The homeowner with a big lawn — 40 mows at 2 hours each: they learn DIY costs $2,200.00 against a $2,000.00 quote, so hiring wins by $200.00 — and they check the $31.00 reverse to see the hourly value where hiring first wins.
• The busy professional valuing time at $50.00 an hour: they learn DIY costs $2,080.00 and hiring wins by $780.00 — and they check the $27.00 reverse to see the hourly value where DIY still wins by at least $100.00.
• The homeowner with a $65.00-a-mow quote: they learn DIY costs $1,105.00 against a $1,690.00 quote, so DIY wins by $585.00 — and they check the $61.74 reverse to see the pro rate where DIY wins by at least $500.00.

Accuracy & limitations

The math is first-principles: the DIY cost is the mows times the supplies per mow plus the hours per mow times your hourly value, rounded to cents half-up; the pro cost is the mows times the pro rate per mow; the winner is the lower total, and the page prints the absolute gap with the winner — never a signed number. The per-mow figures are computed in whole cents — the DIY cost per mow times 100, rounded to the nearest cent — so $1,105.00 over 26 mows is $42.50 a mow, and $2,200.00 over 40 mows is $55.00 a mow. The reverses are step reverses on whole cents, whole dollars and whole hours: the displayed answer is the smallest (or largest) whole value that reaches the target, and the neighbour one step away is printed in full so you can see the crossing. What the model cannot do is price your real job: the $30–$80 per-mow range, the $5.00 of supplies, the 1.5 hours per mow and the 26-mow season are typical values, not quotes, and a real quote depends on the lawn size, the slope, the access and the area; the model counts no mower purchase or repair, no fuel price swings, and no value for the pro’s guarantee. Use it to see which way wins on the numbers — then get a real quote before you decide.

Frequently asked questions