Opal Building Co.

General Contractors
London ON N5Y 4E9
Write a Review
Write a Review
Star Score
StarScore uses a complex algorithm which considers a company’s review ratings, responsiveness, reputation, and recency. Learn more.


This is the average rating based on homeowner reviews.
This indicates how long it's been since the last review.
Low reputation means there has been review tampering or a company request to remove a review. This score is also impacted when we do not have enough information i.e: low number of reviews.
How well a company responds to Service Requests and Reviews.
Reviews by rating (past 12 months)
Verified by HomeStars

Review for Opal Building Co.

Average customer rating:
10 10 (1 reviews)

Sort by

Sarina Alvarez
Sarina Alvarez
0 reviews London, ON

First Review


Basement Conversion

We bought our home ten years ago with an unfinished basement. With such a small family we never had the need for the extra space in our basement. To gain some extra income we looked into turning our basement into a rental unit. At that point we called Opal and other contractors to come and take a look at the potential project. Kevin was able to tell us right from the start how much our investment would bring in monthly as well as what kind of value it would add to the overall value of our home. Opal then gave us a very detailed quote outlining the entire job from start to finish and at that point we decided to hire them. They turned our basement into a fully permitted rental unit with a beautiful kitchen and bathroom, two spacious bedrooms with regular sized windows and dining and living space. It was a no brainer to complete this project and we are so happy we had Opal do all the work. We can't say enough good things about Opal and would highly recommend them to anyone looking for quality work carried out by professionals.

Was this review helpful?
The reviews on this page are the subjective opinion of the Author and not of HomeStars Inc.

More about Opal Building Co.

Innovative, Industry-Leading General Contractor in London, ON
Opal Building Co. is a construction company serving London, ON, with a focus on residential remodels and renovations.

Our process begins with gaining a detailed understanding of the client’s unique wants, needs and design preferences. Our team stays up to date on the latest in building science, materials, codes and trends to inform our clients of important factors to consider when choosing a design. Some clients know exactly what they want, while others need help conceptualizing a new vision for their space from the ground up. Whatever the case may be, we offer a full suite of design services that can be tailored to suit your specific needs and budget.

Co-owners, Kevin Bartman and Tyler McIlroy, believe that a hands-on approach produces the best results. When construction begins, they are both regularly on site carrying out the work with their own hands to ensure that every detail conceived in the design stage is crafted to perfection. Ingenuity, modernization and efficiency define their approach to business management, allowing them to spend less time doing paperwork and more time face-to-face with their clients. With over 20 years of combined experience in a diversity of construction fields, the duo is poised to lead the most demanding projects.

To book a free estimate, please contact us today at info@opalbuilding.ca or 226-236-3087.
Services Provided
Basement Remodeling, Bathroom Remodeling, Custom Home, Garage Building, General Contracting, Home Additions, Home Extensions, Home Remodeling, Home Restoration, Kitchen Remodeling, Porch Design & Construction

Areas Served

General Contractors
Company profile information is not moderated by HomeStars. Ask the contractor to verify before hiring.