Licensed, Bonded, & Insured Excavation Contractors
Commercial & Residential Site Development Specialists
Direct Support Line: (928) 428-4930
Montoya Septic Systems & Excavating Clean Vector White Branding Mark

Licensed and bonded excavation specialists offering professional septic system installation, site preparation, and commercial demolition services.

Whether you're establishing foundation footprints for a new doublewide layout, installing an engineered commercial septic field, or grading rough acreage for local development projects, our heavy equipment crews deliver certified, reliable results across the Gila Valley.

Your Trusted Septic and Site Infrastructure Partners in Southeastern Arizona

Turnkey Site Infrastructure Solutions

Septic System Installation & Repairs

We configure comprehensive, code-compliant residential and civil wastewater networks. From standard gravity layouts to alternative engineered system modifications required by tricky soil structures, we handle layout engineering, structural tank configurations, and permitting.

  • Soil profile evaluation & county permitting assistance
  • Precast concrete septic tank installations
  • Leach line restorations & distribution repair solutions

Excavating, Mass Grading & House Pads

Our heavy mechanical machinery fleet grades layouts to exact engineering specs. We cut, level, and pack precision structural building house pads tailored specifically for manufactured housing setups or standard custom real estate architecture profiles.

  • Raw land property clearing, grubbing, & landscaping rock setups
  • Compaction-certified residential building home pads
  • Precision site drainage routing & grading support

Underground Utility Trenching

Avoid coordinating third-party contractors. We dig, bury, and secure critical pipeline networks, managing deep line extensions for main water feeds, electrical conduit sleeves, gas lines, and main sewer connections safely.

  • Certified primary water line placement & extensions
  • Deep utility trenches matching Arizona municipal codes
  • Sewer pipe routing alignment connections

Block Wall Foundations & Underpinnings

Upgrade the visual and structural footprint of your home. We install permanent concrete structural perimeter block walls and custom solid block structural skirting packages designed to increase appraisal validation values.

  • Permanent concrete masonry perimeter block structures
  • FHA/VA compliant manufactured housing block skirting
  • Patio subgrade foundations & structural flatwork layouts

Proven Commercial Experience

We are the commercial infrastructure crew trusted by prime developers, municipalities, and general contracting agencies across Graham and Greenlee Counties.

Starbucks Site

Subgrade lot clearings, mass tracking excavation, and site infrastructure deployments.

Strive Gym

Precision pad layouts, primary foundational clearing work, and subgrade updates.

Quail Ridge

Main municipal community water pipeline line extensions and deep utility layout configuration.

Grand View

Multi-family apartment development infrastructure, lot clearing setups, and sewer alignment.