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Quick Answer
To improve a lawn before selling your house: mow and edge it regularly, treat moss, feed in spring, overseed bare patches, water in dry spells, and consider returfing if it is beyond repair. Cost: 100 to 500 pounds. Returns: 2,000 to 10,000 pounds on the sale price. A green, tidy lawn is one of the top three things buyers notice.
Why the Lawn Matters When Selling
The lawn is one of the most visible elements of the garden. A green, tidy lawn makes the whole garden look cared for. A brown, mossy lawn makes the whole garden look neglected. Estate agents in the Chilterns regularly tell us that the lawn is one of the top three things buyers notice, after the kitchen and bathroom.
The good news is that improving a lawn is relatively cheap and fast. With 4 to 6 weeks of attention, even a poor lawn can look good. This guide explains how to improve a lawn before selling, with specific advice for Chiltern soils.
The 6-Step Lawn Improvement Plan
Step 1: Mow and Edge (weekly)
Mow weekly at 30 to 40mm. Edge along paths and borders with a half-moon edger. A neatly mown lawn with crisp edges makes the whole garden look cared for.
Step 2: Treat Moss (February to March)
If the lawn has moss, apply iron sulphate at 5g per square metre. The moss will turn black within 2 weeks. Scarify to remove the dead moss. On chalky Chiltern soils, the iron also helps green up the grass.
Step 3: Feed (March to April)
Apply a spring lawn feed at 30g per square metre. This greens up the grass and encourages strong growth. Water in if no rain within 2 days.
Step 4: Overseed Bare Patches (April to May or September)
Overseed bare and thin patches at 25g per square metre. Choose a seed mix suited to your conditions. Water daily for 3 weeks. See our overseeding guide.
Step 5: Water in Dry Spells
Water the lawn weekly in dry spells, applying 25mm (about 2.5 litres per square metre). A green lawn sells better than a brown one.
Step 6: Consider Returfing (if beyond repair)
If the lawn is more than 50 percent moss or weeds, consider returfing. New turf costs 5 to 10 pounds per square metre laid, and gives instant results. See our turf vs seed guide.
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The Pre-Sale Lawn Timeline
| When | Job |
|---|---|
| 6 to 8 weeks before | Treat moss, scarify, overseed bare patches |
| 4 to 6 weeks before | Feed, water regularly |
| 2 to 4 weeks before | Mow weekly, edge |
| 1 week before | Mow, edge, final tidy |
| Day before photos | Mow and edge for the best look |
Cost of Improving a Lawn Before Selling
| Job | DIY cost | Professional cost |
|---|---|---|
| Moss treatment (50 sqm) | 10-20 | 50-100 pounds |
| Scarification (50 sqm) | 50 (hire) | 100-200 pounds |
| Feed (50 sqm) | 10-20 | 30-60 pounds |
| Overseeding (50 sqm) | 30-50 | 80-150 pounds |
| Watering | 0 (own hose) | 0 |
| Returfing (50 sqm, if needed) | 250-500 | 500-1,000 pounds |
| Total (without returfing) | 100-140 | 260-510 pounds |
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Common Mistakes
- Cutting the lawn too short. Short grass looks scalped and unhealthy. Mow at 30 to 40mm.
- Not treating moss. A mossy lawn looks neglected. Treat moss and scarify.
- Not feeding. A fed lawn is greener and healthier. Feed in spring.
- Not watering in dry spells. A brown lawn puts buyers off. Water weekly.
- Doing the work too late. Allow 4 to 6 weeks for the lawn to look its best.
Frequently Asked Questions
Will a new lawn add value to my house?
A green, tidy lawn adds value by making the garden look cared for. A new lawn (returfed) costs 500 to 1,000 pounds but can add 2,000 to 5,000 pounds to the sale price.
Should I returf or reseed before selling?
Returf if the lawn is beyond repair and you have less than 6 weeks before marketing. Reseed if you have more than 6 weeks and the lawn is salvageable.
How long before the photos should I mow?
Mow 1 to 2 days before the photos, not the day of. This gives the grass time to settle and the clippings time to disperse.
Get Help Improving Your Lawn Before Selling
If you are selling a property in Oxfordshire, Buckinghamshire, Berkshire or Bedfordshire and want help improving the lawn, send us a WhatsApp with photos and we will aim to respond within 12 to 36 hours, Monday to Sunday.
Further Reading
- How much to spend on the garden before selling
- Why is my lawn full of moss?
- Our lawn recovery service
On mature lawns, check for leatherjackets and chafer grubs before scarifying. Established turf recovers more slowly than newly seeded areas, so adjust the renovation intensity accordingly.
Put this advice into practice
Use the relevant CGM tool or follow a related guide, then send us a few photos if you would like a tailored plan.
Sources and citations
This article draws on the following sources. Specific claims are cited inline where relevant.
- CGM field records (2026-07. Site observations from gardens across Oxfordshire, Buckinghamshire, Berkshire and Bedfordshire.
- Royal Horticultural Society (2024). RHS Gardening Advice and Plant Finder. Available at rhs.org.uk.
- Met Office (2024). Regional climate averages, South East England. Available at metoffice.gov.uk.
- British Geological Survey (2024). Soil parent material data for the Chilterns and Thames Valley. Available at bgs.ac.uk.