★★★★★ 5 · 49 Google reviews · 940 NW Dunbar Ave #100
Black Diamond Sealcoating holds a 5 star average across 49 Google reviews, which places it at #2 for paving & asphalt in Portland on our rankings. Positions come from verified public ratings and review volume, refreshed monthly. See the full list on the Paving & Asphalt rankings page.
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