Tigard and Tualatin Paving Services: Residential & Commercial

Paving Services for Tigard and Tualatin

Tigard and Tualatin anchor the southwest corner of the Portland metro area, straddling I-5 and Highway 99W with a mix of established residential neighborhoods, growing commercial corridors, and industrial parks. Both cities have experienced steady growth, with new residential development in areas like Bull Mountain, River Terrace, and Tualatin's Basalt Creek planning area driving demand for quality paving work.

Cojo provides residential and commercial paving services throughout the Tigard-Tualatin area. We understand the local soil conditions, permit requirements, and construction standards that define paving work in these communities.

Tigard Paving: Neighborhood by Neighborhood

Tigard's geography creates distinct paving conditions across different parts of the city.

Bull Mountain and Hillside Properties

Bull Mountain — Tigard's premier residential area — presents specific paving challenges:

• Steep grades: Many Bull Mountain driveways have slopes exceeding 10%, requiring careful grade design to manage water runoff and prevent erosion at the edges
• Clay-over-basalt soils: The hill's volcanic origin means shallow basalt formations covered by weathered clay. Driveways need adequate base depth over the clay but may encounter rock during excavation
• Retaining considerations: Hillside driveways often require retaining walls or cut-fill transitions that must be coordinated with the paving work
• View home access: Many upscale homes on Bull Mountain have long, steep driveways that require specialized paving equipment

Downtown Tigard and Highway 99W Corridor

Tigard's commercial core along Main Street and Highway 99W includes:

• Aging commercial parking lots: Many lots along 99W were built in the 1970s-80s and are due for reconstruction, not just overlay
• Mixed-use redevelopment: Downtown Tigard's ongoing revitalization is creating demand for new parking lot construction with modern stormwater and ADA standards
• High-traffic loading: Commercial lots serving retail and restaurant uses along 99W experience heavy daily traffic that demands heavier pavement sections

River Terrace

Tigard's River Terrace development — a planned community of approximately 3,500 homes west of Bull Mountain — is one of the metro area's most active residential construction zones:

• New construction driveways: Homes completing construction need driveways that meet Tigard's public works standards
• Subdivision infrastructure: Roads, sidewalks, and pathways throughout the development require professional paving
• Clean Water Services compliance: The entire development falls within the Tualatin River watershed and must meet strict stormwater standards

Tualatin Paving Conditions

Tualatin's lower elevation and proximity to the Tualatin River create conditions that differ from hillside Tigard.

Tualatin River Floodplain

Properties near the Tualatin River face:

• High water tables: Groundwater can be within 3-5 feet of the surface during wet season, requiring enhanced drainage in pavement base courses
• Alluvial soils: River-deposited silts and clays that are soft and compressible — not ideal subgrade material
• Flood zone considerations: Properties in mapped flood zones may face additional development restrictions that affect paving projects
• Seasonal timing: Low-lying areas near the river may not be accessible for paving equipment during peak wet season

Tualatin Industrial Area

Tualatin's industrial parks — including the areas along Tualatin-Sherwood Road and SW Boones Ferry Road — have specific paving needs:

• Heavy vehicle loading: Warehouse and distribution facilities need pavement sections designed for forklift traffic, loaded semi-trucks, and container handling equipment
• Continuous operations: Many industrial facilities operate 24/7, requiring phased paving work that maintains facility access
• Large areas: Industrial parking lots and truck yards commonly exceed 50,000 square feet, requiring efficient production paving techniques
• Utility coordination: Industrial sites often have extensive underground utilities that must be located and protected during paving work

Tualatin Commons and Commercial Core

Tualatin's commercial center around Tualatin Commons features:

• Established parking lots: Many commercial lots around the lake and along Martinazzi Avenue are 20-30 years old and showing wear
• Aesthetic standards: The Commons area has design standards requiring paving to complement the community's planned character
• Pedestrian connectivity: Parking lot design must accommodate extensive pedestrian pathways connecting to the lake and park system

Soil Conditions in the Tigard-Tualatin Area

Understanding local soils is critical for paving that lasts.

Upland Areas (Bull Mountain, Hillside)

• Soil type: Weathered basalt residuum and Portland Hills Silt
• Characteristics: Moderate clay content, variable depth to bedrock, moderate drainage
• Base requirement: 8-12 inches of compacted aggregate, with geotextile separation on clay layers
• Special concerns: Rock excavation may be needed for grade adjustments

Lowland Areas (Tualatin, Durham, Lower Tigard)

• Soil type: Alluvial deposits, Willamette Silt
• Characteristics: High clay content, poor drainage, seasonal high water table
• Base requirement: 10-14 inches of compacted aggregate with geotextile and subdrains
• Special concerns: Subgrade may need stabilization or surcharging before paving on very soft sites

Transition Zones

Many properties in the area sit at the transition between upland and lowland conditions. Conditions can change across a single property — we have seen sites where the front parking area sits on well-drained gravel while the rear lot is built on soft clay. This is why we test every site rather than assuming uniform conditions.

Permit and Code Requirements

Tigard Permits

Tigard's Community Development Department handles paving permits:

• Residential driveways: Permit required for new approaches; simple application process with 1-2 week review
• Commercial parking lots: Site development review required; 4-8 week process
• Stormwater: Must comply with Clean Water Services (CWS) standards — the regional authority that covers all of Washington County
• Right-of-way work: Work within Tigard's right-of-way (including driveway approaches at the street) requires a separate right-of-way permit

Tualatin Permits

Tualatin's Building Division manages permit processes:

• Residential: Similar to Tigard — new approaches require permits, resurfacing generally does not
• Commercial: Site development review through the Planning Division for new lots or significant modifications
• Stormwater: Also under Clean Water Services jurisdiction
• Industrial: Large industrial paving projects may require additional review for impacts on the transportation system

Clean Water Services (CWS) Standards

Both Tigard and Tualatin fall under CWS for stormwater management. Key requirements:

• New impervious surfaces over 500 square feet require onsite stormwater treatment
• Water quality treatment is required before stormwater leaves the site
• Vegetated facilities (rain gardens, bioswales) are preferred over underground systems
• Projects within 200 feet of sensitive areas (wetlands, streams) trigger additional review through CWS's Service Provider Letter process

Cojo's Tigard-Tualatin Services

We provide complete paving services for both cities:

• Residential driveways: New installation, replacement, widening, and repair for homes throughout Tigard and Tualatin
• Commercial parking lots: New construction, overlays, sealcoating, crack sealing, striping, and ADA upgrades
• Industrial paving: Heavy-duty pavement sections for warehouses, distribution centers, and manufacturing facilities
• Excavation and site prep: Grading, subbase preparation, utility trenching, and drainage installation
• Maintenance programs: Scheduled sealcoating and crack sealing to extend pavement life

We also serve the surrounding communities of Sherwood, Durham, and King City, and connect with our broader Portland metro service area including Lake Oswego and West Linn.

Why Local Knowledge Matters

Working in Tigard and Tualatin requires understanding the specific conditions of each community — from Bull Mountain's hillside challenges to Tualatin's floodplain soils, from CWS stormwater requirements to each city's distinct permit processes. We bring that local knowledge to every project.

Contact Cojo for a free estimate on your Tigard or Tualatin paving project. Visit our services page for a complete list of what we offer, or check our project gallery to see our work across the metro area.