Grand Line Construction LLC – Expert Excavation & Underground Utility Installation in Buckeye & Goodyear, AZ. With over 15 years of heavy civil construction experience, we specialize in conduit installations, water services, sewer septic services, and underground utilities for custom home builders and landowners.
Proper site preparation is the foundation of every successful build. At Grand Line Construction, we specialize in earthwork, grading, and concrete services that create stable, well-drained sites for custom homes, driveways, and utility installations. From cut-and-fill grading and pad prep to driveway pours, slabs, and structural concrete, our team delivers precise, high-quality results that ensure lasting performance. With over 15 years of heavy civil experience, we take pride in building solid foundations that prevent settling, drainage problems, and future maintenance issues — keeping your project durable, level, and ready for the next phase of construction.
Proper installation of underground utilities is essential for the performance and safety of every custom home or residential development. At Grand Line Construction, we specialize in water lines, sewer systems, and APS/SRP power conduit trenching, installed to meet all local codes and utility standards. Our team coordinates directly with utility providers and inspectors to ensure each trench, conduit, and connection is accurate, compliant, and built to last. Whether you’re developing a new home site or expanding existing infrastructure, we deliver efficient and reliable utility installations that keep your project on schedule and inspection-ready.
At Grand Line Construction, we provide complete sewer and septic system installation services for custom homes and residential properties across the West Valley. Whether you’re building on city sewer or a private septic system, our team handles everything from excavation and tank placement to leach line installation and final grading. With over 15 years of heavy civil experience, we ensure every system is installed to county standards, passes inspection, and functions efficiently for years to come. From new builds to replacements, we deliver reliable, code-compliant installations that keep your project moving on schedule.
Proper drainage is critical to protecting driveways, home sites, and private roads from erosion and flooding. At Grand Line Construction, we install durable pipe culverts designed to manage stormwater efficiently and prevent costly washouts. Our team handles every detail — from grading and pipe sizing to backfill and compaction — ensuring a long-lasting, inspection-ready installation. Whether you’re a custom home builder, land developer, or property owner, we provide reliable, engineered drainage solutions that keep your project safe and stable for years to come