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24 firms listed · 4 in Thorold · 9 open 24/7 · 17 open weekends · 22 rated 4.5+
Data verified October 18, 2026
The 24 firms listed for Thorold, ON provide architectural services. The building types they take, the services they include and the registrations they claim are taken from their own websites, and the ratings and quotes come from public reviews.
Of the 24 firms we list here, 4 are in Thorold itself and 20 come from towns including St. Catharines (5), Welland (4) and Niagara Falls (3). The firms on this page are rated from 3.9 to 5.0 across 4,191 reviews; 12 have 50 or more reviews and 22 are rated 4.5 or higher. When customers rate these firms on specific qualities, they most often praise professionalism (91%), responsiveness (85%) and quality (76%). The topics that come up most in reviews of the firms on this page are "price", "efficient" and "cleanliness". 9 are open around the clock; 17 are open on Saturdays and 14 on Sundays. The services the firms on this page list most often on their websites are air conditioning (2), furnaces (2), heating (2) and pool heaters (2). 3 show a licence on their websites. 9 have ten or more years of experience, the longest 70 years. 12 offer emergency call-outs; 4 offer financing or payment plans; 9 give free estimates; 5 are family- or locally-owned and 4 list coupons or special offers. We count these figures across the firms on this page; hours and prices change, so confirm the details with the firm before you book.
All 24 firms here give a web address. Look for photographs of finished buildings rather than renderings, and for work of your type and scale. A firm that designs schools and a firm that designs laneway houses are answering different questions, and the portfolio usually says which one you are looking at.
