Concrete Contractor in Hillsboro, Oregon: Driveways, Patios & Flatwork

Quick Verdict

A concrete contractor in Hillsboro builds on the flat floor of the Tualatin Valley in Washington County, where clay-rich ground holds water through a wet winter. Driveways, patios, walkways, steps, and flatwork all depend more on the base prep and built-in drainage than on the pour itself. Hillsboro's mostly level terrain helps with access, but flat clay drains slowly, so slope is designed into every slab. The area's fast growth — new homes and tech-corridor development off US-26 — means a mix of new-construction flatwork and replacements on older properties. The reliable pour season runs roughly May through October. Scope your job by square footage, thickness, reinforcement, and finish, and insist the bid covers the base and joints.

Concrete Work in Hillsboro, Washington County

Hillsboro sits at the heart of the Tualatin Valley in Washington County, west of Portland along the US-26 Sunset Highway corridor. That setting shapes local concrete work:

• Tualatin Valley clay. The valley floor is clay-heavy ground that holds water and moves seasonally. A slab on a soft, wet base settles and cracks, which is why sub-grade prep on valley clay is the foundation of any lasting Hillsboro slab.
• Flat terrain, slow drainage. Much of Hillsboro is level, so access is often easy — but flat clay drains slowly, so slope must be built into the slab.
• Wet winters. The valley's rainy season keeps water in the ground; drainage and slope are designed so water runs off rather than pooling.
• Fast growth. Hillsboro's strong development means both new-construction flatwork and replacements on established lots, each with its own access and base conditions.

For the full range of concrete work, start with our Oregon concrete services guide.

What a Concrete Contractor Does in Hillsboro

A full-service contractor covers the whole flatwork range:

• Driveways — new pours and replacements sized for vehicle loads. See concrete driveways in Hillsboro.
• Patios and walkways — broom, exposed-aggregate, or stamped concrete in Hillsboro.
• Steps, stoops, and ADA ramps — formed and finished to code.
• Slabs — shop, shed, and addition slabs.
• Curbing, aprons, and approaches.

What Drives Cost in Hillsboro

Concrete is priced per square foot, with local factors moving the number:

• Access. Open, flat Hillsboro lots are typically easy to reach, but fenced backyard patios still cost more in labor.
• Demolition. Removing an old slab adds tear-out, haul-off, and disposal.
• Thickness and reinforcement. Heavier driveways cost more than a thin walkway.
• Finish. Broom is baseline; exposed aggregate and stamped finishes cost more.
• Drainage. On flat clay, slope and channel drains matter more than people expect.

Industry Baseline Range: standard broom-finish flatwork in the Hillsboro area typically runs in the range of $9 to $18 per square foot, with reinforced driveways and decorative finishes running higher+. These are industry baseline ranges for planning only — actual pricing depends on lot size, access, condition, and current market conditions. Get a site-specific quote.

Current Market Reality

Ready-mix and labor prices move with material and fuel costs, and Hillsboro's growth keeps crews busy. The valley's reliable pour window is roughly May to October, so scheduling early secures the dry days a clean pour and cure need — especially during the busy building season.

How to Choose a Concrete Contractor in Hillsboro

A short checklist:

• Licensed and insured. Confirm Oregon CCB licensing and insurance. Cojo is CCB Licensed & Insured.
• Base prep in writing. The bid should spell out excavation, base material, and compaction.
• Drainage plan. On flat valley clay, ask exactly how water leaves the slab.
• Joints and reinforcement. Confirm control-joint spacing and whether rebar or mesh is included.
• Local references. Work on similar Washington County soils and lots tells you the most.

The Bottom Line

Hiring a concrete contractor in Hillsboro comes down to base prep and drainage on flat Tualatin Valley clay through wet winters. The level terrain helps with access, but the clay and slow drainage still make the base and slope the make-or-break details. Cojo is CCB Licensed & Insured, serves Hillsboro and statewide Oregon, and handles the full range of concrete services. To scope your driveway, patio, or flatwork, request a Hillsboro quote.