Lawn Mowing Cost Calculator

A lawn mowing cost calculator works out the true annual cost of keeping a lawn maintained, whether through a professional contractor or by mowing yourself. Contractor costs depend on price per visit multiplied by the number of cuts per season, a figure that most homeowners underestimate by focusing on the per-visit price rather than the annual total. DIY costs are only accurately calculated by including amortised equipment purchase, ongoing maintenance, and the value of the time spent mowing, all of which together often bring the true DIY cost much closer to contractor pricing than is intuitively expected.

S. Siddiqui

Edited by

S. SiddiquiFounder & Editor-in-Chief
Sources:WikipediaWolfram AlphaUpdated Jul 2026

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Quick Answer

Contractor cost per year = price per visit × cuts per year. A typical 60 m² UK lawn at fortnightly mowing (13 cuts/season) costs £325–£520/year at contractor rates of £25–£40 per visit. DIY true cost = (equipment amortisation per year) + (time per mow × cuts per year × your hourly rate). At 30 minutes per mow, 13 cuts, and £15/hr: time cost = 6.5 hours × £15 = £97.50, plus ~£35/yr for a corded mower = £132.50 total.

What Is a Lawn Mowing Cost Calculator?

A lawn mowing cost calculator works out what you spend on lawn maintenance each year, whether you hire a contractor or mow yourself. It answers two different questions: what is the true annual cost of a contractor service, and what is the honest total cost of DIY mowing when equipment purchase, maintenance, and your own time are factored in properly.

Contractor pricing varies by lawn size, location, and frequency. A small urban lawn of 25 m² typically commands £15–£25 per visit in the UK. A large garden of 200 m² typically costs £65–£120. The annual cost depends entirely on how many cuts per season: a weekly mowing contract at 26 cuts per year costs twice as much as fortnightly mowing at 13 cuts, even if the per-visit price is identical. Most homeowners dramatically underestimate their annual contractor spend by thinking in terms of "it's only £30 a time" without multiplying by the number of visits.

DIY costs are frequently underestimated in the opposite direction. The purchase price of a mower is the most visible cost, but it is spread over the mower's usable life. A £400 battery mower that lasts five years costs £80/year in amortised equipment cost, not a one-off £400 payment. Adding fuel, oil, blade sharpening, and the opportunity cost of the time you spend mowing gives a true cost that often exceeds £100–150 per year for a medium lawn, which many homeowners never calculate. Our grass seed calculator pairs with this tool when comparing the full cost of lawn renovation versus ongoing maintenance.

The Checkatrade lawn mowing cost guide provides independently sourced UK contractor price data by region and lawn size, which is used as the basis for the benchmark ranges in this calculator.

How to Use the Lawn Mowing Cost Calculator

  1. Choose contractor or DIY. Select Hire a Contractor to calculate what professional mowing will cost per year. Select DIY Cost to calculate your true annual cost including equipment amortisation and the value of your time.
  2. Enter your lawn area. Measure the mowable grass area in square metres, square feet, or square yards. For contractor pricing, the area drives the benchmark price range displayed. For DIY, it influences the time per mow you enter.
  3. Select mowing frequency. Weekly (26 cuts/season) is typical for high-maintenance ornamental lawns. Fortnightly (13 cuts) is the UK standard for most domestic lawns from April to October. Monthly (8 cuts) applies to low-maintenance utility grass. Use Custom to enter your actual visit count.
  4. For contractors: enter your actual price per visit, or leave it blank to use the benchmark range for your lawn size. The benchmark is drawn from UK contractor pricing data.
  5. For DIY: select your mower type and the calculator applies the appropriate amortised annual equipment cost. Enter your estimated time per mow and your personal hourly rate to calculate the opportunity cost of your time. Set the hourly rate to zero if you enjoy mowing or count it as exercise.
  6. Read the results. The calculator shows annual cost, monthly average, 5-year projection, and, in DIY mode, a direct comparison against contractor pricing for your lawn size.

Formula and Methodology

Contractor annual cost:

Annual cost = price per visit (£) × cuts per year
Monthly average = annual cost ÷ 12

DIY true annual cost:

Equipment cost per year = mower purchase price ÷ expected life (years) + annual servicing
Time cost per year = (minutes per mow ÷ 60) × hourly rate (£) × cuts per year
Total annual DIY cost = equipment cost per year + time cost per year
True cost per mow = total annual DIY cost ÷ cuts per year

Worked example: 80 m² lawn, fortnightly contractor at £35/visit.

  • Annual cost: £35 × 13 = £455
  • Monthly average: £455 ÷ 12 = £37.92/month
  • 5-year cost: £455 × 5 = £2,275

Same lawn, DIY with a self-propelled petrol mower (£120/yr amortised), 45 minutes per mow, time valued at £15/hr:

  • Time cost: (45/60) × 15 × 13 = £146.25/yr
  • Equipment: £120/yr
  • Total DIY: £266.25/yr
  • Saving vs contractor: £455 − £266.25 = £188.75/yr

Real-World Applications

Homeowner deciding whether to hire a contractor: A working parent with a 70 m² lawn and limited weekend time is considering whether a fortnightly mowing contract is worth it. Contractor quote: £35 per visit × 13 fortnightly cuts = £455/year. DIY alternative: existing corded electric mower (£35/yr amortised), 25 minutes per mow, time valued at £20/hr. DIY cost: (25/60 × 20 × 13) + 35 = £108.33 + £35 = £143.33/yr. The saving from DIY is £311.67/year, but at £20/hr the 5.4 hours of annual mowing time is worth £108.33 to the household. Whether the contractor is "worth it" depends on how the freed weekend time would be used. The calculator makes this trade-off explicit.

Retired homeowner comparing mower upgrade cost: A retiree with a 120 m² lawn is currently using a push petrol mower (£90/yr amortised) and spends 50 minutes per mow. They are considering upgrading to a self-propelled model (£120/yr amortised) to reduce effort. With time valued at £0/hr (retired, mowing is leisure), DIY cost on push mower = £90/yr. On self-propelled = £120/yr. The upgrade costs an extra £30/yr or £150 over 5 years. The decision is entirely about physical effort, not money, because the time cost is zero in their calculation.

Landlord budgeting property maintenance: A landlord owns three rental properties with lawns of 45 m², 60 m², and 90 m², each requiring monthly mowing by a contractor during the tenancy. Contractor rates: 45 m² at £22/visit, 60 m² at £30/visit, 90 m² at £45/visit. At 8 monthly cuts per season: (22 + 30 + 45) × 8 = £776/year across all three properties. Over a 5-year tenancy this is £3,880 in lawn maintenance alone, a budget line that is often missed in property cost planning. Pairing with the fertiliser calculator completes the annual lawn maintenance budget by adding the cost of spring and autumn feeds.

Garden centre advising a ride-on mower buyer: A customer with a 600 m² rural lawn is considering a ride-on mower at £3,500 (£350/yr amortised over 10 years, plus £80/yr fuel and servicing = £430/yr) versus a contractor at £120 per visit × 13 fortnightly cuts = £1,560/yr. DIY with ride-on (20 minutes per mow, time valued at £15/hr): time cost = (20/60 × 15 × 13) = £65/yr. Total DIY = £430 + £65 = £495/yr. Saving vs contractor: £1,560 − £495 = £1,065/yr. Break-even on the mower purchase (£3,500) against annual saving (£1,065): 3.3 years. At rural lawn sizes, the financial case for ride-on ownership is clear.

Common Mistakes and Troubleshooting

Thinking per-visit price is the annual cost: The most common error. A £30 per visit price sounds modest, but at weekly mowing across a 26-week season this is £780 per year. Always multiply the per-visit price by the actual number of visits before evaluating whether a service fits the budget.

Ignoring time cost in DIY calculations: DIY mowing is not "free" if the time has alternative value. A homeowner who earns £25/hr who spends 30 minutes mowing fortnightly for 13 cuts per year is spending 6.5 hours, worth £162.50 at their professional rate. Whether this matters depends on whether those 6.5 hours would actually be spent on paid work or in leisure, but the calculation should at least be made consciously rather than assumed to be zero.

Under-amortising equipment cost: Buying a £500 battery mower and treating it as a one-time sunk cost distorts DIY cost calculations for subsequent years. The correct approach is to divide the total cost of ownership (purchase price plus consumables over the life of the equipment) by the expected life in years, producing an honest annual equipment cost. The calculator applies this approach across seven mower categories.

Not including lawn edges and trimming time: Mowing time estimates frequently exclude the time spent on edges, stripes, grass collection, and clearing the mower deck. For a lawn with many edges or a striped finish requirement, the total lawn maintenance time per session may be 50–100% more than the pure mowing time. Include edge trimming and clippings disposal in your per-session time estimate for an accurate DIY cost.

Assuming contractor prices are fixed: UK contractor prices have risen significantly over the past five years with fuel, labour, and equipment cost inflation. A contractor quote from 2021 is likely 20–40% below current market rates. Obtain updated quotes annually when budgeting for ongoing lawn maintenance contracts.

The grass seed calculator helps estimate how much seed is needed to establish or overseed a lawn before ongoing mowing costs begin, while the sod calculator is useful when costing the alternative of laying turf for faster establishment.

Last reviewed: July 17, 2026
Founder's Real-World Experience
S. Siddiqui

S. Siddiqui

Founder & Editor-in-Chief, YourToolsBase

How I discovered I was spending £680 a year on lawn mowing without ever calculating it

In spring 2024 I sat down to review my household maintenance budget and realised I had no idea what I was actually spending on the garden. I had a contractor who came fortnightly from April through October. The invoice was £26 per visit, which felt perfectly reasonable.

When I multiplied it out: 26 weeks, fortnightly = 13 visits. 13 × £26 = £338. That seemed fine. Except my contractor also came in March for a clearance cut, twice in June during a particularly wet growing spell, and again in November after a late growth flush. Total visits that year: 18. Total spend: 18 × £26 = £468.

And that was the mowing only. I had also bought a bag of spring lawn feed, a bottle of moss killer, and a box of grass seed for the bare patches by the gate. Adding those in brought the total garden maintenance spend for the year to approximately £540.

When I built the lawn mowing cost calculator and entered 13 fortnightly visits at £26, the annual figure was £338. But when I switched to the custom frequency option and entered 18 (the actual number of visits), the figure was £468. The 5-year projection read £2,340. I had been renting a maintained garden for over two thousand pounds every five years and had never once framed it that way.

I am not suggesting the contractor was bad value. For what is effectively one hour of skilled work per year of my time (signing the invoice), it is a reasonable trade. But I now budget it explicitly as a fixed annual line item rather than treating each £26 invoice as a trivial one-off cost.

Estimated 13 visits per year; actual 2024 total was 18 visitsTrue annual mowing cost: £468, not the mentally-accounted £3385-year projection of £2,340 prompted explicit annual budget line
Also used alongside: Fertilizer Calculator

Frequently Asked Questions

How much does lawn mowing cost in the UK?
UK contractor lawn mowing prices in 2025 vary by lawn size: small lawns (up to 30 m²) cost £15–£25 per visit; medium lawns (30–70 m²) cost £25–£40; large lawns (70–150 m²) cost £40–£65; very large lawns (150–400 m²) cost £65–£120 per visit. Prices are higher in London and the South East and lower in the Midlands and North. Most domestic lawns are mowed fortnightly from April to October, giving 13 visits per season.
How many times should you mow a lawn per year in the UK?
Most UK lawns require mowing from late March through to late October, a period of roughly 32 weeks. Mowing frequency within the season varies: weekly during fast-growing periods (April–June and September); fortnightly during slower-growing summer and autumn periods. Total cuts per year range from 8 (monthly low-maintenance utility lawn) to 26 (weekly high-maintenance lawn). The standard for a domestic UK lawn is approximately 13–18 cuts per year.
Is it cheaper to mow your own lawn or hire a contractor?
DIY is almost always cheaper in raw financial terms once a mower is owned, but the saving must be weighed against the value of the time spent. For a 60 m² lawn mowed fortnightly: contractor cost is approximately £325–£520/year; DIY cost (electric mower amortised, 25 min per mow, time at £15/hr) is approximately £95–£130/year. The saving is roughly £200–£400/year. However, this assumes the DIY time is genuinely available and that equipment, fuel, and maintenance are included in the DIY estimate.
How long does it take to mow a lawn?
Mowing time depends on lawn size, mower width, and the number of obstacles. A rule of thumb: a 40 m² lawn takes 15–20 minutes with a standard 35 cm mower. A 100 m² lawn takes 30–45 minutes. A 300 m² lawn takes 60–90 minutes. Add 30–50% for edge trimming, collecting clippings, and clearing the mower. Ride-on mowers cut time proportionally to their wider deck width but require additional turnaround time.
What is included in a lawn mowing contractor service?
A standard lawn mowing contractor service typically includes: mowing the lawn at the agreed height, collecting or mulching clippings, and basic edge trimming. It does not usually include: scarification, aerating, moss treatment, fertilising, weed control, or repairing bare patches. These are additional services priced separately. Always clarify whether clippings are removed from the property or left on site, and whether the contractor brings their own equipment or uses yours.
How do I find a reputable lawn mowing contractor?
Check Checkatrade, Rated People, Bark.com, or local Facebook gardening groups for reviews and quotes. Ask neighbours with well-maintained lawns who they use. Request a written quote specifying the price per visit, frequency, what is included, and whether the price is fixed for the season or subject to review. Avoid contractors who cannot provide references or who quote verbally only. For a regular seasonal contract, a written agreement protects both parties.
Should I buy a petrol or electric lawn mower?
For lawns up to 150 m²: a corded electric or battery mower is sufficient, lower maintenance, and quieter. For lawns of 150–400 m²: a self-propelled battery or petrol mower is recommended; battery models now have sufficient runtime for these sizes. For lawns above 400 m²: a petrol push or self-propelled mower or a ride-on is practical. Corded electric is cheapest to run and maintain but limited by cable length. Battery mowers have higher upfront costs but low running costs. Petrol mowers have the lowest purchase price at the high end but require fuel, oil changes, and annual servicing.
What is the cheapest way to maintain a lawn?
The cheapest approach financially is DIY mowing with a basic electric mower (corded), no contractor, and minimal inputs. A corded electric hover mower costs £60–£100 and lasts 5–7 years, giving an amortised cost under £20/year. Running costs are pennies per mow. The real cost is time: roughly 5–8 hours per year for a 50 m² lawn mowed fortnightly. Beyond mowing, the cheapest lawn maintenance is simply to mow regularly and not fertilise, scarify, or treat at all; most lawns remain functional without inputs, though quality declines over time.
Do lawn mowing contractors charge more for longer grass?
Yes. Most contractors include a surcharge of 20–50% for a first-cut overgrown lawn, or charge as a separate one-off clearance visit before the regular mowing rate applies. Grass that has grown beyond 10–15 cm requires multiple passes or a higher deck height setting, takes significantly longer, and puts more strain on equipment. If you are starting a new mowing contract after a period of neglect, expect the first invoice to be higher than the quoted regular rate.
Can I negotiate a discount for regular lawn mowing?
Yes. Most independent contractors offer 10–20% discounts for a prepaid seasonal contract versus pay-per-visit pricing. Agreeing to a fixed number of visits for the season, paying upfront or in advance monthly, and not requiring grass removal from the property are the most common ways to reduce the per-visit price. Group discounts are sometimes available if you can arrange for the contractor to service multiple neighbouring properties on the same visit, reducing their travel time.

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About the Author

S. Siddiqui

S. Siddiqui

Founder & Editor-in-Chief

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S. Siddiqui is the founder and editor-in-chief of YourToolsBase, overseeing all content, tool accuracy, and editorial standards.

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Formulas and data in this tool are based on guidelines from the above sources.