What is asphalt resurfacing, and when is it needed?

Asphalt resurfacing involves adding a new layer of asphalt over an existing surface. It’s ideal for aging or moderately damaged asphalt that doesn’t require full replacement.

How often should I sealcoat my asphalt?

We recommend sealcoating every 2–3 years to protect your asphalt from UV damage, chemicals, and wear.

Can you repair large potholes in commercial parking lots?

Yes, we specialize in repairing all types of asphalt damage, including large potholes in high-traffic areas.

Do you provide custom striping and marking services?

Absolutely! We offer custom designs, including logos and specialty markings, in addition to standard layouts.

How long does asphalt paving take to complete?

The timeline depends on the size of the project, but most residential driveways and small parking lots can be completed within a few days.

The Central Coast’s #1 Choice for Underground Utility Services

Need Certified Sewer, Water, Storm Drain, or PG&E Trenching Solutions? Our Underground Utility Work Sets the Standard Across Monterey, Santa Cruz & San Benito Counties.

Get a Fast, Free Underground Utility Estimate Today

Serving Monterey, Santa Cruz & San Benito Counties – Request Your Free Quote for Sewer, Water, Gas, or PG&E Utility Trenching Services Now!

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The Central Coast’s Trusted Choice for Underground Utility Services

Coastal Pipeline Inc. provides expert underground utility construction across Monterey, Santa Cruz, and San Benito Counties. As a certified general engineering contractor, we specialize in durable, code-compliant infrastructure for sewer, water, storm drain, gas, fire line, and PG&E-related conduit installations.

From trenching and pipeline placement to utility tie-ins and system upgrades, our team delivers precision-built solutions for residential, commercial, municipal, and site development projects. We focus on long-term reliability, safety, and compliance—ensuring every system meets local codes and project specifications.

Whether you’re coordinating a new utility installation, replacing aging infrastructure, or managing a time-critical repair, Coastal Pipeline is your trusted partner for high-performance underground utility work. Our services include trenching, sewer, water, and storm drain line installation, PG&E-compliant gas and electrical conduit trenching, utility tie-ins, and full site restoration.

Our Underground Utility Services

Certified Installation, Trenching & Infrastructure Solutions

We specialize in building and maintaining critical underground systems for residential, commercial, municipal, and civil projects.

Sewer, Water & Storm Drain Infrastructure

Safe, code-compliant pipeline systems designed for performance and longevity.

PG&E-Related Gas & Electrical Conduit Work

PG&E OQ-certified trenching and conduit installation throughout the Central Coast.

Fire Line & Backflow Infrastructure

Reliable underground fire protection systems for residential, commercial, and municipal development.

Fire Line Installation: From mainline connection to hydrant placement, installed to meet fire code and flow requirements.
Backflow Prevention & Testing: Certified AWWA installations and compliance testing for potable water protection.
Inspection & Repair: Full maintenance and emergency response for fire suppression infrastructure.

Why Choose Coastal Pipeline Inc. for Underground Utility Services?

Certified Infrastructure Expertise

We specialize in underground utility construction for sewer, water, storm drain, gas, electrical, and fire protection systems—built to meet civil engineering standards and regulatory codes.

Utility-Grade Materials & Methods

Our installations use high-performance materials such as ductile iron, HDPE, and C900 PVC piping, with trenching, encasement, and backfill practices aligned with PG&E and municipal requirements.

Skilled, Safety-Focused Crews

Our team includes certified operators and technicians trained in excavation safety, utility tie-ins, and compliance testing. We take pride in precise, reliable execution on every project.

Reliable, On-Schedule Delivery

From preconstruction coordination to final inspection, we deliver projects efficiently, minimizing delays and disruptions for developers, municipalities, and site owners.

Applications for Underground Utility Services

Industrial Facilities: Trenching, conduit installation, and utility tie-ins for plants, warehouses, and large-scale infrastructure projects.
Commercial Developments: Full underground utility packages for new builds, expansions, and site upgrades—sewer, water, gas, and electrical systems included.
Municipal Infrastructure: Code-compliant installations for public works projects including storm drains, fire lines, and mainline replacements.
Residential Subdivisions & Site Development: Underground utility systems for new residential builds and ADUs—engineered for long-term performance and seamless utility coordination.

Signs You May Need Underground Utility Repair or Replacement

If you notice any of these issues, it’s time to call Coastal Pipeline Inc.:

Frequent Backups or Sewer Overflows: Recurring blockages or backups can indicate pipe failure, root intrusion, or structural damage in mainline or lateral sewer systems.
Low Water Pressure or Unexplained Leaks: Drops in water pressure, pooling water, or soft ground may signal a break, leak, or aging water main requiring replacement.
Unmarked Utility Conflicts on Site: If your project site reveals undocumented or misaligned utility lines, professional assessment and trenching may be necessary to avoid construction delays.
Outdated or Undersized Utility Lines: Older or substandard pipelines often lack the capacity to meet modern code or load demands—replacement with compliant materials is critical for performance and safety.

Our Underground Utility Service Process

Site Evaluation & Utility Assessment

We begin with a detailed site evaluation to assess existing infrastructure, identify utility conflicts, and determine the most efficient trenching and installation strategy.

Planning & Permitting

Our team handles utility coordination, trenching plans, and permitting to ensure full compliance with municipal codes, PG&E standards, and project specs.

Professional Installation & Utility Tie-Ins

Certified crews perform precision trenching and utility line installation—sewer, water, gas, or conduit—with accurate depths, protective encasement, and safe utility tie-ins.

Testing, Backfill & Restoration

All systems are pressure-tested, inspected, and backfilled to standard. We complete final surface restoration to return the site to its original condition or better.

Benefits of Professional Underground Utility Services

Improved Infrastructure Reliability: Properly installed sewer, water, and conduit systems reduce the risk of failures, backups, and costly downtime.
Code Compliance & Safety Assurance: All installations are performed to meet local, state, and utility provider regulations—ensuring safe, approved systems from day one.
Long-Term Cost Efficiency: Investing in quality trenching, materials, and certified installations minimizes future repairs and extends the lifecycle of underground systems.
Environmentally Responsible Practices: We implement low-impact excavation methods, erosion control, and sustainable backfill options that align with California’s environmental standards.

Areas We Serve

Coastal Pipeline Inc. proudly offers professional underground utility services to:

Contact Coastal Pipeline Inc.

For Certified Underground Utility Services in Monterey, Santa Cruz, and San Benito Counties

From sewer, water, and storm drain installations to PG&E trenching, fire lines, and conduit work, Coastal Pipeline Inc. delivers professional underground utility solutions for residential, commercial, and municipal projects.

Call us today at 831-402-5014 or fill out our online contact form to schedule your Underground Utility Services!

Frequently Asked Questions

What types of underground utilities do you install?

We install sewer lines, water mains, storm drain systems, gas lines, electrical conduits, and fire suppression pipelines. All services are performed to meet engineering, utility, and safety standards.

When is trenchless sewer replacement a good option?

Trenchless methods like pipe bursting are ideal when the existing pipe is failing but surface disruption must be minimized—such as in paved or landscaped areas. It’s a faster, cleaner alternative to open trenching.

Do you work with PG&E for gas and electrical trenching?

Yes. We are a PG&E Applicant Installer Operator Qualified (OQ) contractor and handle trenching, conduit installation, and tie-in coordination per PG&E’s construction and safety guidelines.

Can you coordinate with municipalities and project engineers?

Absolutely. Our team regularly works with municipal agencies, civil engineers, and GCs to ensure seamless coordination, permitting, and inspection for public and private infrastructure projects.

How long does a typical utility installation take?

Project duration varies based on scope, site conditions, and permitting—but most standard utility runs (e.g., water or sewer laterals) can be completed within days. Larger projects may require phased scheduling.