A build this size is a construction project, not a purchase
A West County backyard with a patio, a wall, steps and a fire feature is a grading job with stone on top. Almost every failure we see — settling pavers, a leaning wall, a patio that puddles — traces back to base and drainage decisions made before anything visible was installed.
Base and compaction
The layer nobody sees decides whether the patio is flat in year eight. West County clay wants more base, not less, and it wants it compacted in lifts.
Grade and drainage
Water has to leave. A wall without drainage stone and an outlet is a dam, and it will move.
Wall engineering
Segmental walls over about four feet usually need geogrid and, in several West County municipalities, a permit and an engineer's stamp.
Sequencing
Heavy equipment reaches the far corner exactly once. Build order is designed, not improvised.
Material sourcing
Lead times on stone and coping run weeks in season. A start date without confirmed material is a hope.
What West County homeowners actually pay
| Scope | West County installed range |
|---|---|
| Paver patio, 300-500 sq ft | $9,000 - $19,000 |
| Paver patio, 600-900 sq ft with border detail | $18,000 - $34,000 |
| Segmental retaining wall, under 4 ft | $45 - $75 per face sq ft |
| Segmental retaining wall, over 4 ft (engineered) | $70 - $130 per face sq ft |
| Seat wall with cap, per linear foot | $180 - $320 |
| Steps, natural stone tread | $700 - $1,500 per riser |
| Fire pit, gas, built-in | $4,500 - $12,000 |
| Full multi-feature backyard build | $28,000 - $65,000 |
Observed ranges from West County bids for standard residential work. Not a quote — your number comes from a builder after a site walk.
Questions before you call anyone
What does a full backyard hardscape build cost in West County?
Why do two West County builders quote the same patio $20,000 apart?
Should the whole backyard be built at once or in phases?
Get matched with a licensed West County builder
Tell us what you are building and the budget you are working with. We route it to a licensed, insured local builder who does that kind of work — not to whoever paid the most this month.
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