One accountable team
Our in-house design team, permits, and build crew work under one roof, so design intent carries straight through to the finished space.
Design-build in Thornhill
Duplex Conversions in Thornhill
Andare Homes designs and builds duplex conversions in Thornhill as one accountable design-build team.
- Licensed, Insured & WSIB-Registered
- Backed by our workmanship warranty
- 5.0 on Google
Get a Quote in Thornhill
Tell us what you need and we’ll get you a quote. 5.0 on Google · Licensed, insured & WSIB-registered · Workmanship warranty · Free, no-obligation quote & site visit.
5.0 on Google
Workmanship warranty, we stand behind our work Licensed, Insured & WSIB-Registered Completed to code & Ontario requirements In-house design team, build by one team Serving the GTA & surrounding area
What GTA homeowners say
5.0 · Verified reviews on Google R Raymond Gafoovia Google
★★★★★
Fantastic experience with them! The team was professional, attentive, and delivered high-quality work on time and within budget. Highly recommend for anyone building or renovating their home!
S Simon Carrionvia Google
★★★★★
Andare did an amazing job renovating my house, they turned an old and boring basement into a modern and exciting place. Their attention to detail was astounding and I couldn't be happier with the results.
L Luka Stankovicvia Google
★★★★★
Andare took our outdated house and turned it into a modern, functional space. The new addition blends seamlessly with the existing structure.
P Paul Robinsonvia Google
★★★★★
The attention to detail is incredible. The Andare team has just finished building my home and I'm absolutely blown away. I've been living in here for just under a month now and I still haven't found a single flaw, you can really see their experience and craftsmanship in every part of the home.
I Isa Siddiquivia Google
★★★★★
Our basement went from an unfinished storage space to a fully functional family room. Amazing transformation, 5 stars, 100% recommend.
E Emily Carbonel Toothvia Google
★★★★★
Andare delivered excellent quality and great service. The team was professional and made everything easy.
Why Andare Homes
Duplex Conversions in Thornhill, done right
Built to last
Quality materials and proven detailing chosen for how you live, finished to the Ontario Building Code and built to hold up for the long run.
Quote-ready
Share your plans, photos, or ideas and get a free, no-obligation site visit and estimate with no guesswork.
Code-conscious
Design, permits, and construction handled in accordance with Ontario requirements and your municipality.
Our Process
Our Process
- 01 Tell us about your project, your goals, photos, ideas, or plans you already have.
- 02 Our in-house design team shapes the design and handles the permits, then we quote and schedule the build.
- 03 Our crew builds it, coordinating every trade so the work runs cleanly and on plan.
- 04 We finish the Thornhill home to the Ontario Building Code, hand it over clean, and stand behind it with our 3-year workmanship warranty.
Local Context
Duplex Conversions in Thornhill
What a duplex conversion involves
A duplex conversion may include separate entrances, a second kitchen, bathroom planning, fire and sound separation, egress, electrical and plumbing upgrades, HVAC strategy, suite layouts, storage, waterproofing review, and permit coordination.
The project has to work for both households, not only pass as extra square footage.
Design for two real homes
The design team plans privacy, circulation, storage, natural light, kitchen function, bathroom placement, and durable finishes. Each unit needs a clear identity and a layout that does not feel compromised.
Many Toronto houses can support two-unit living, but feasibility depends on structure, access, ceiling height, windows, services, and municipal review.
Consultant and permit coordination
Duplex conversions often require drawings, code review, and permit coordination. Andare keeps that technical review close to the suite layout so the plan can be built with fewer surprises.
What Andare clients say
We needed more space, so Andare helped us expand while renovating the entire home.
Our home renovation exceeded all expectations. Andare added space, improved the layout, and modernized every detail.
Andare added space, improved the layout, and modernized every detail.
Duplex Conversions in Thornhill: what shapes the work
Thornhill spans established Vaughan and Markham residential areas with older village character, mature subdivisions, ravine influence, larger family homes, townhouses, and infill or renovation demand. This layer should be used with the correct municipal slug and approval path. Common work includes kitchens, bathrooms, basements, additions, custom-home planning, exterior upgrades, in-law layouts, structural changes, and family-space improvements.
Thornhill is not a Toronto page. Depending on the property, local review may sit with Vaughan or Markham. Toronto suite, laneway, garden-suite, and multiplex assumptions should not be used unless the project is actually in Toronto.
Thornhill projects often involve mature lots, older house conditions, ravine influence, and larger family needs. Design-build helps compare renovation, addition, basement, and custom-home paths before the scope is fixed.
For Thornhill homeowners, Andare's design team can connect layout, family-space goals, finishes, storage, exterior changes, and consultant input before the project moves toward municipal review.
Andare supports Thornhill homeowners across Vaughan-side and Markham-side residential areas, including mature-lot streets, family subdivisions, ravine-influenced properties, and townhouse pockets. Andare keeps duplex conversions tied to the home in front of us, not a generic city-wide template.
Finished By One Team
Designed and built by one team
Thoughtful design, tight coordination, and a tidy site, with every trade managed in-house from permits through finishing, and built to the Ontario Building Code.
- Every trade coordinated under one roof
- Quality work built to last for real life
- Quote-ready support from design to finish
More in Thornhill
Everything we design and build in Thornhill
Design-build services across Thornhill. See all services in Thornhill →
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- Duplex Construction in Thornhill
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- Triplex Conversions in Thornhill
- Accessibility Renovations in Thornhill
- Accessory Dwelling Units in Thornhill
- Basement Renovations in Thornhill
- Basement Underpinning in Thornhill
- Bathroom Renovations in Thornhill
- Century & Older-Home Renovations in Thornhill
- Coach Houses in Thornhill
- Condo Renovations in Thornhill
Our Work
View Our Projects See real projects across Toronto & Ontario
Custom homes, additions, renovations, and multiplexes, designed and built for homeowners, builders, contractors, and property teams.
Start your duplex conversions in Thornhill with Andare
Book a consultation with Andare Homes. Our in-house design team and design-build crew plan, design, permit, build, and finish your project as one accountable team, licensed and insured, rated 5.0 stars from 55 reviews.
Backed by our workmanship warranty, we stand behind every job · Licensed, Insured & WSIB-Registered
Send your project details
Tell us what you need and we’ll get you a quote. 5.0 on Google · Licensed, insured & WSIB-registered · Workmanship warranty · Free, no-obligation quote & site visit.
Duplex Conversions Near Thornhill
View all service areas →Andare Homes provides duplex conversions, designed and built by one accountable team across Toronto and surrounding Ontario communities.