Concrete Slab Cost in Portland 2026
Concrete Slab in Portland costs between $2,194 and $9,752 in 2026, with the average around $4,876. Portland pricing runs 22% above the US national average. Pouring of a concrete slab for a shed, garage, or addition with excavation, a gravel base, vapor barrier, wire mesh, and a finished surface. Includes forms and curing.
What concrete slab includes in Portland
Pouring of a concrete slab for a shed, garage, or addition with excavation, a gravel base, vapor barrier, wire mesh, and a finished surface. Includes forms and curing.
Typical time on site: 1 to 3 days. Local labor rate: $30/hour for an experienced concrete pro.
What changes the price of concrete slab in Portland
- Slab square footage
- Slab thickness
- Vapor barrier and mesh
- Excavation and base
- Site access and grading
A concrete slab quote priced off statewide averages will be off by 10 to 20 percent for Portland, because the metro has its own labor pool, material delivery distances, and permit timelines.
Portland climate and demand for concrete
Mild wet winters; rare snow; moss/moisture issues on roofs; minimal AC historically
Portland permits for concrete slab
Building department: City of Portland Bureau of Development Services (BDS). https://www.portland.gov/bds
Typical permit cost: $250 - $3,000 residential. Inspection time: 7-20 business days. Portland rule: Portland BDS has strict energy code (Reach Code option). Stormwater management requirements. CCB license required for all contractor work in Oregon.
Oregon sales tax and licensing for Concrete
Oregon sales tax: No state sales tax (CAT 0.57% on commercial activity over $1M). No sales tax. Corporate Activity Tax (CAT) at 0.57% on commercial activity over $1M annual.
State license: Oregon Construction Contractors Board (CCB), required: $325 + $20K bond + liability insurance.
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