Run a free full auditDuke Commercial Construction is a general contractor in Charleston, SC, located at 237 King St Suite 2B. The firm is a veteran-owned, full-service general contractor and construction management company headquartered in downtown Charleston. It provides services including developing early design concepts, setting and managing expectations, preparing budgets, build-out, and completing the final walkthrough. The company is licensed, insured, and bonded. Its expertise covers construction management, design-build, healthcare, commercial offices, tenant improvements, hospitality, recreation, and land development. The business holds a 5.00 rating based on 6 reviews.
The firm is led by Nicholas Ranko, who was born and raised in Boston, MA. In 2006, Ranko enlisted in the US Marine Corps as an Engineer. He attended multiple engineering programs while serving, including the Journeyman course in St. Louis, MO, and served in Iraq. Following his honorable discharge in 2010, he attended Towson University in Maryland, where he participated in the Division IAA football program and earned his bachelor’s degree. Ranko moved to Charleston in 2013 and has worked for several construction companies in the low country. He graduated with a Master’s in Business from The Citadel in 2020, serving as treasurer of The Student Veteran Association. He lives downtown with his wife, Janine, and their German Shepherd, Duke.
Duke Commercial Construction has experience performing specific tenant upfits, such as demolishing interior walls, installing casework for storage and desk space, painting, matching floor stains, and installing drywall and insulation. Featured projects include maintenance at The Citadel, the Vandiver Wrestling Locker Room, the Town of Kiawah Municipal Office Renovation, and the Amelia Interiors Office Renovation at 237 King Street.
The company is known for its positive rating from customers who have reviewed it. Duke Commercial Construction combines veteran leadership with local expertise to deliver comprehensive construction solutions in Charleston.
Located on King St in Charleston, SC, the business is about a mile from The Shops at The Charleston Place and The Riviera Theater.
BizScoreAI awarded Duke Commercial Construction a technical score of 91 out of 100, which means the website is technically sound, secure, and indexable so search engines can read it without errors. The firm received a discoverability score of 75 out of 100.
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BizScoreAI scanned the website dukeconstructionllc.com on September 26, 2026. Duke Commercial Construction has a BizScore of 47 out of 100.
AI visibility scan by category: AI Discovery 10 of 25 points, Structured Data 0 of 25 points, Content Readiness 9 of 30 points, AI Trust Signals 8 of 20 points.
Website audit sub-scores (out of 100): On-Page 65, Technical 91, Performance 72, Content 39.
Strengths: 5 checks passed. AI Crawler Access, AI Content Blocking, Local Multimedia, AI-Parseable Headings, XML Sitemap.
Areas to improve: 12 checks. llms.txt (failed), FAQPage Schema (failed), Google Business Profile Link (failed), LocalBusiness Schema (failed), Third-Party Review Links (failed), Q&A Content (failed), Meta Description (failed), Organization Schema (warning), Speakable Schema (warning), Hyperlocal Targeting (warning), About/Team Page (warning), Author Signals (warning).
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