James Peck
Owner, Mr. Green Turf Clean - Professional turf care specialist serving San Diego County since 2023.
Last updated: 2026-05-11
How Much Does It Cost to Landscape a 20x20 Yard in San Diego?
A 400 square foot backyard build in San Diego runs $8,000 to $28,000 depending on materials and complexity. Basic decomposed granite with drip irrigation and three trees costs $8,000 to $12,000. Add pavers, lighting, and a small water feature and you are at $18,000 to $28,000. Permits add $500 to $1,500.
Last updated: May 2026
A 20x20 yard is 400 square feet. We build them constantly. Last month our crew finished four of them. Two in North Park, one in Kensington, one in University Heights.
The price depends almost entirely on what you put down and what is underneath.
The Three Cost Tiers We See
Most of our 400 sq ft jobs land in one of three buckets.
Tier 1 ($8,000 to $12,000): Decomposed granite or mulch base. Two to four 15-gallon trees. A drip irrigation loop tied into the existing controller. Maybe a small patio of dry-laid flagstone. This is what we build in starter homes around Bay Park and Linda Vista.
Tier 2 ($14,000 to $22,000): Permeable pavers across half the space, a planted border with drought-tolerant shrubs, a smart irrigation controller, and 6 to 10 low-voltage path lights. Most Mission Hills and South Park backyards we redo land here.
Tier 3 ($22,000 to $35,000): Now you are adding a small fire pit, a 4x6 water feature, mature 24-inch box trees, and turf or specimen plants. Permits, demolition of existing concrete, and rebar in poured walls push it up fast.
What Drives the Price Up?
The yard size sets a floor. Everything else moves the number.
- Existing concrete demo: Removing a 12x12 slab and hauling it off runs $1,200 to $2,000. Tight side-gate access adds $400 to $600 because the crew wheels every chunk by hand.
- Soil grade: Mt. Helix and Kensington yards often slope. A 400 sq ft yard with a 3-foot grade change needs a retaining wall or terracing. Add $3,500 to $8,000.
- HOA plant lists: Carmel Valley and 4S Ranch HOAs spec specific species and counts. We have seen lists that double the planting budget.
- Water meter and backflow: Adding irrigation where there was none usually means $800 to $1,500 for a backflow preventer plus connection.
What We Have Stopped Recommending
Lawn. A 400 sq ft cool-season lawn in San Diego drinks 22 to 28 gallons per square foot per year. That is 9,000 to 11,000 gallons annually for a small yard, and SDG&E water rates jumped again in February. Most clients now ask for artificial turf or low-water plantings instead.
And we have turned jobs down. We said no to two turf installs in Hillcrest last month because the homeowners had west-facing yards with no shade. Synthetic surface temperatures hit 160°F by 2pm in July there. Real call we made.
What a 400 sq ft Project Actually Includes
A clear 20x20 backyard install from our crew covers site prep and grading, soil amendments where the existing dirt is hardpan clay (common in Tierrasanta and Clairemont), irrigation install or update including a smart controller, planting, mulch or hardscape surface, and a 12-month plant warranty on anything we install.
Not included unless we add it: permits, structural retaining walls, drainage piping to the street, and electrical for lighting (we sub a licensed C-10).
How Long Does a 20x20 Yard Take?
Tier 1 jobs we finish in 3 to 4 days. Tier 2 runs 7 to 10 days. Tier 3 with a water feature and permit pulls usually hits 3 weeks.
Rain delays things. Our March 2026 jobs in Encinitas got pushed twice because of the storms. Plan accordingly if you start in winter.
Where the Money Actually Goes on a 400 sq ft Build
Rough breakdown on a typical Tier 2 job:
| Line Item | Tier 1 | Tier 2 | Tier 3 |
|---|---|---|---|
| Demo and grading | $800 | $1,800 | $3,500 |
| Hardscape (pavers, flagstone) | $1,200 | $6,500 | $11,000 |
| Irrigation | $1,400 | $2,400 | $3,200 |
| Plants and trees | $1,800 | $3,500 | $6,000 |
| Lighting | $0 | $1,800 | $3,500 |
| Water feature | $0 | $0 | $4,500 |
| Labor and management | $2,800 | $5,000 | $8,300 |
Get a Real Number for Your Yard
We give free on-site estimates across San Diego. We measure, ask what you want, and tell you what it will actually cost. No retainer until you have signed a contract.
If we have worked in your neighborhood before, mention it when your Google review goes up. We read every one.
See how our landscape design process works or recent project photos. For irrigation-only jobs, head to our irrigation page.