Atelier Dansereau
“We had a last minute project to complete and they were super quick, attentive and professional.”
Best Interior Designers and Decorators in Longueuil, QC
15 firms listed · 8 in Longueuil · 2 open weekends · 13 rated 4.5+ · 1 shows a licence
Data verified October 18, 2026
Astuces Design Annie Leclerc
“I am very satisfied with her service and above all reassured to do business with her for a basement renovation project like mine.”
Nob Design Intérieur
“Thank you Marie-Eve and Marjolaine for responding so well to our needs and even more.”
EXA Design
Maison J&J
Decor Experts Expo Inc
The 15 firms listed for Longueuil, QC take on interior projects. The rooms they specialize in, the credentials they claim and the stages their service covers are all drawn from their own websites, alongside ratings and quotes from public reviews.
Area overview: Longueuil, QC
8 of the 15 firms we list are based in Longueuil; the other 7 serve Longueuil from Montreal (4 km) and Brossard (9 km). 14 of the firms on this page have a rating, from 4.4 to 5.0 across 623 reviews; 7 have 50 or more reviews and 13 are rated 4.5 or higher. When customers rate these firms on specific qualities, they most often praise professionalism (95%), quality (73%) and responsiveness (56%). 2 are open on Saturdays. 1 shows a licence on its website. 5 have ten or more years of experience, the longest 27 years. We have a website on file for 14 of the firms on this page; 11 publish a contact page and 12 list a public email. We count these figures across the firms on this page; distances are straight-line, and hours and prices change, so confirm the details with the firm before you book.
Where can I see a firm's finished projects?
Websites appear on 14 of the 15 listings here. Look past the styling for evidence of layouts changed and problems solved, and for homes of your vintage. Ask which projects the firm ran from start to finish and which it only furnished, since the photographs rarely say.
Montréal Designers Incorporée
Obsession Design Inc.
Mk Imperium Design Senc
“I loved working with this interior design company.”
Burovision Inc
“Special thanks to Christina and Sarra for their excellent customer service.”
D-Cor
“(D-Cor) designed my 2 clothing stores in Caraquet, NB I highly recommend Daniel, we are always satisfied 👍🏻 …”
ADN Design
“The price is not the cheapest but given the quality of the materials and work, it is well worth it.”
Eau Tendance
“My husband and I walked in with a few questions about a sink and ended up purchasing most of the faucets, sinks and accessories we needed for our home renovations.”
Jessica Locas Design d'Intérieur
“She helped me make wise choices for the layout of my condo and advised me on the latest design trends.”
Groupe SP Réno Urbaine
“Company to recommend, I am very happy with the work with SP Reno Urbaine.”
Why these companies made our list
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