Top Construction Contractors in Alton, IL

O'Fallon Concrete Co specializes in comprehensive concrete services for residential and commercial properties in St. Louis and surrounding areas. We deliver high-quality installations, repairs, and leveling solutions that enhance safety, functionality, and curb appeal. Our team combines technical expertise with customer-focused service to create durable concrete structures that provide lasting value.

St Louis Paving specializes in commercial asphalt and concrete paving services, including installation, repair, and maintenance. We serve St. Louis and surrounding areas with expertise in drainage solutions, ADA compliance, and sealcoating. Trusted since 1967, we deliver durable, high-quality results with industry-leading warranties and a focus on customer satisfaction.

Agape Construction is a St. Louis-based design-build firm specializing in custom residential construction and remodeling. We deliver integrated architectural and construction services for new homes, kitchen/bath renovations, and historic restorations. Our 35-year reputation for quality craftsmanship and client-centric processes makes us a trusted partner for transforming residential spaces.

Adams Architectural Associates is a St. Louis-based architectural firm specializing in residential, commercial, and religious projects. With expertise in design, drafting, and construction management, we deliver tailored solutions that balance creativity with practicality. Our commitment to client-centric service ensures projects meet aesthetic, functional, and budgetary goals.

Ideal Landscape Group is a St. Louis-based commercial landscaping company offering maintenance, construction, irrigation, and recreational services since 1985. We provide tailored solutions for industrial, medical, retail, and municipal properties, combining local expertise with in-house project management. Our commitment to quality, safety, and client satisfaction ensures reliable, budget-conscious results for both routine maintenance and large-scale projects.

Madden Construction is a family-owned St. Louis-based contractor specializing in commercial and residential construction services. With over 50 years of experience, we deliver high-quality projects ranging from tenant improvements and office remodels to full-scale residential renovations and emergency restoration. Our commitment to integrity, customer satisfaction, and proven expertise ensures reliable, on-budget results for clients across the St. Louis metro area.

Branham Electric provides comprehensive residential, commercial, and industrial electrical solutions in St. Louis since 1991. Our expertise includes new construction, energy-efficient lighting, and 24/7 emergency repairs. Backed by a BBB A+ rating and 300+ years of combined team experience, we guarantee quality installations, prompt service, and free project estimates.

J.F. Electric is a full-service electrical contracting firm serving utility, commercial, industrial, and telecommunications clients across the Midwest. We deliver end-to-end solutions including transmission line construction, substation integration, renewable energy systems, and 24/7 emergency response. Our ISO 9001-certified operations combine technical expertise with a safety-first culture to ensure reliable, code-compliant results.

Collins & Hermann is a Midwest-based construction contractor specializing in transportation safety and infrastructure development. With over 50 years of experience, we deliver guardrail systems, highway signage, fencing solutions, and civil construction projects across Missouri and Kansas. Our union-affiliated teams provide full-service capabilities from design to installation, emphasizing quality, safety, and timely execution.

Morrissey Construction is a trusted general contractor specializing in multifamily, senior living, commercial, school, and historic renovation projects. Since 1952, we have combined traditional craftsmanship with modern techniques to deliver high-quality, sustainable solutions. Our client-centric approach emphasizes budget control, safety, and innovation, ensuring projects meet exacting standards while addressing unique needs.