Grennan Construction

Reviews consistently highlight Grennan Construction for professional conduct, detailed estimates, transparent pricing, and thorough workmanship on siding, roofing, and related exterior work. Customers report on-time or timely project execution, clear communication, courteous crews, and high-quality results, with vinyl siding explicitly mentioned in at least one project. There is at least one negative review about a salesperson not following through (no-show), but overall feedback is positive and recommendations are common.