Mulch Calculator › Cost by city › Seattle, WA

Mulch Cost in Seattle, WA

Mulch for a 20×20 ft (400 sq ft) mulch bed in Seattle, WA costs about $162 ($138–$186). Local 2026 price is around $44 per cuyd. Free calculator inside.

Estimated cost — a 20×20 ft (400 sq ft) mulch bed

$162

Typical range $138 – $186 · about $44 per cuyd in Seattle

Local unit price

$44

You need

3.7 cu yd

State factor

WA ×1.15

Estimate your own Seattle project

Prices in Seattle, WA run about +15% versus the national average. Enter your dimensions — the calculator starts from the local $44 per cuyd rate; change it to your supplier's quote for an exact figure.

Length (ft)

Width (ft)

Depth (in)

You need

3.7 cu yd

Estimated material cost $162

Area

400 sq ft

Volume

100.0 cu ft

2-cu-ft bags

Mulch cost in nearby cities

Spokane, WA Tacoma, WA Vancouver, WA Bellevue, WA

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Regional estimate = national average adjusted by a WA cost factor. Not a quote. Actual prices vary by site conditions, access, and supplier.