Run a free full auditGallagher Bros Construction is a construction company in St. Louis, MO, located at 500 S County Center Way. The firm provides roofing, siding, gutter repair, and window installation for residential and commercial properties. Operating as a full-service storm restoration contractor, the company assists clients with hail, wind, and water damage assessments. It serves St. Louis, St. Charles, and Springfield, MO, along with St. Louis County, St. Charles County, Metro East Illinois, and the Springfield area. Gallagher Bros Construction holds a rating of 4.7 based on 147 reviews.
The company has been locally owned and family-operated since 1973. It maintains licenses in both Missouri and Illinois. The service team offers inspections, repairs, and full replacements for roofs. A key part of their approach involves helping homeowners navigate insurance claims for storm damage. They work directly with insurance companies to assess damage and decide whether to file a claim. The business provides a 5-year workmanship warranty on every project.
Beyond storm restoration, Gallagher Bros Construction offers preventative maintenance for roofs. This service aims to preserve the structural integrity of homes and commercial buildings. The company also handles durable siding installation, reliable gutter repair, and high-quality window installation and repair. Clients can schedule appointments by calling the South County main office at (314) 646-8015, the O’Fallon office at (636) 329-9035, or the Springfield office at (417) 528-2558. The business operates Monday through Friday from 8:00 AM to 5:00 PM and Saturday from 9:00 AM to 3:00 PM.
Gallagher Bros Construction is known for its long-standing presence in the region, having protected homes in the St. Louis area for over 50 years. The combination of its family-owned history, dual-state licensing, and direct insurance claim assistance establishes it as a reliable contractor for storm restoration and exterior home improvements.
With over five decades of experience protecting homes in St. Louis and surrounding areas, Gallagher Bros Construction delivers trusted storm restoration and exterior services to local homeowners and businesses.
The business sits on South County Center Way, about a tenth of a mile from Lemay Ferry Road and the South County Center shopping mall. It is also located near South Lindbergh Boulevard, roughly a fifth of a mile away.
BizScoreAI awarded the company a Technical score of 94 out of 100, ensuring the website is secure and easily read by search engines. The Content Quality score of 75 out of 100 reflects clear descriptions that help AI assistants quote the business directly. Additionally, the firm ranks number 3 of 24 Construction company businesses that BizScoreAI has scored in St. Louis.
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BizScoreAI scanned the website gallagherbrosconstruction.com on June 6, 2026. Gallagher Bros Construction of St. Louis has a BizScore of 71 out of 100.
AI visibility scan by category: AI Discovery 10 of 25 points, Structured Data 8 of 25 points, Content Readiness 16 of 30 points, AI Trust Signals 15 of 20 points.
Website audit sub-scores (out of 100): On-Page 93, Technical 94, Performance 71, Content 84.
Strengths: 6 checks passed. AI Crawler Access, AI Content Blocking, Organization Schema, Meta Description, About/Team Page, XML Sitemap.
Areas to improve: 6 checks. llms.txt (failed), FAQPage Schema (failed), Speakable Schema (warning), Q&A Content (warning), AI-Parseable Headings (warning), Author Signals (warning).
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