What to know about retaining wall in Seattle
Seattle's mild climate is easy on exterior materials, so look and maintenance usually drive the choice.
What affects retaining wall cost in Seattle
Beyond the local market, the same factors that drive retaining wall cost everywhere apply in Seattle:
- Wall size (height and length, measured as face area).
- Material: timber is cheapest, natural stone the most expensive.
- Height: tall walls need engineering, reinforcement, and drainage.
- Drainage, backfill, and base preparation.
Retaining Wall cost by wall material in Seattle
These figures are adjusted for Seattle pricing (about 1.32x the national average), so they reflect what local homeowners actually pay.
| Wall material | Cost in Seattle | Typical total |
|---|---|---|
| Timber | $15.84 to $47.52 /sq ft | About $1,600 to $4,750 |
| Interlocking concrete block | $26.40 to $79.20 /sq ft | About $2,650 to $7,900 |
| Boulder / rock | $29.04 to $87.12 /sq ft | About $2,900 to $8,700 |
| Poured concrete | $31.68 to $95.04 /sq ft | About $3,150 to $9,500 |
| Brick | $34.32 to $103 /sq ft | About $3,450 to $10,300 |
| Natural stone | $42.24 to $127 /sq ft | About $4,200 to $12,700 |