How Much Does Install Slate Patio Cost in Seattle, Washington?

What you get at each price level

• Basic

  $15 – $37 per sq ft

  Irregular natural cleft slate flagstones on compacted gravel and a sand bed, stone dust joints

• Standard

  $17 – $44 per sq ft

  Pattern-cut slate in mixed rectangles on compacted gravel and sand, polymeric sand joints

• Premium

  $21 – $54 per sq ft

  Gauged pattern-cut slate in mixed rectangles on a deep compacted base and sand bed, tight polymeric sand joints, sealed