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 Oshawa
Duplex Construction in Oshawa
Andare Homes designs and builds duplex construction in Oshawa as one accountable design-build team.
- Licensed, Insured and WSIB-Registered
- Backed by our workmanship warranty
- 5.0 on Google
Get a Quote in Oshawa
Tell us what you need and we’ll get you a quote. Free, no-obligation consultation and site visit with our design team.
5.0 on Google
Over 20 years in business 250+ homes renovated across the GTA Workmanship warranty, we stand behind our work Upfront, honest pricing, no surprises Licensed, Insured and WSIB-Registered Completed to code and Ontario requirements In-house design team, build by one team Serving the GTA and 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Andare took our outdated house and turned it into a modern, functional space.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 Construction in Oshawa, 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.
Honest, upfront pricing
The price we quote is the price you pay. We scope the work properly before we start, so there are no lowball bids that balloon into surprise change orders later.
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 Oshawa home to the Ontario Building Code, hand it over clean, and stand behind it with our 2-year workmanship warranty.
Local Context
Duplex Construction in Oshawa
What duplex construction includes
The scope can include site review, zoning and permit coordination, foundation, framing, two kitchens, two bathrooms, separate entries, laundry planning, mechanical and service coordination, fire separation, acoustic separation, egress, finishes, inspections, and handover.
New duplex construction allows the building to be planned correctly from the start. That is different from forcing two units into a house that was never designed for them.
Designed for two households
Before drawings are finalized, Andare plans unit sizes, stair or entry locations, privacy between homes, storage, natural light, kitchen function, bathroom routes, and maintenance access.
For the GTA lots, the best duplex plan depends on frontage, depth, parking, servicing, zoning, and how the building should address the street.
Permits, inspections and warranty
Duplex construction needs municipal approval, inspection planning, consultant input, and code-aware detailing. Andare coordinates the new-build process with clear documentation, scope control, and defined handover standards on every project.
Process
- Property, zoning, and unit-goal review
- Two-suite design and consultant pathway
- Duplex permit package and construction sequencing
- Foundation, framing, services, and separations
- Kitchens, baths, finishes, and inspections
- Handover and closeout
What Andare clients say
The Andare team has just finished building my home and I'm absolutely blown away.
The attention to detail is incredible.
Amazing team of home builders, I would recommend them to anyone!
Duplex Construction in Oshawa: what shapes the work
Oshawa includes older central homes, post-war houses, bungalows, newer north-end subdivisions, townhouses, lake-area properties, and family neighbourhoods tied to the city's industrial and commuter history. Common work includes kitchens, bathrooms, basements, additions, legal-suite review, structural updates, garages, and outdoor living.
Oshawa projects need City of Oshawa and Durham Region review. Toronto rules do not apply. Zoning, parking, grading, servicing, conservation, fire separation, ceiling height, tree impacts, and building permits can affect suites, additions, and major renovations.
Oshawa work often focuses on getting durable value from existing homes: better lower levels, stronger layouts, updated kitchens, added space, and repairs or structural changes that make older houses work for current households.
Andare can help Oshawa homeowners decide what to improve first, how rooms should connect, what finishes make sense, and where structure or permits need consultant review.
Andare supports homeowners in Central Oshawa, O'Neill, McLaughlin, Eastdale, Taunton, Northglen, Lakeview, Kedron, Windfields, and surrounding family neighbourhoods. Andare keeps duplex construction tied to the home in front of us, not a generic city-wide template.
More in Oshawa
Everything we design and build in Oshawa
Design-build services across Oshawa. See all services in Oshawa →
- Duplex Conversions in Oshawa
- Triplex Construction in Oshawa
- Accessibility Renovations in Oshawa
- Accessory Dwelling Units in Oshawa
- Basement Renovations in Oshawa
- Basement Underpinning in Oshawa
- Bathroom Renovations in Oshawa
- Century & Older-Home Renovations in Oshawa
- Coach House Conversions in Oshawa
- Coach Houses in Oshawa
- Condo Renovations in Oshawa
- Custom Homes in Oshawa
Nearby
Duplex Construction in nearby areas
We design and build across the GTA. Explore the areas next to Oshawa.
Our Work
View Our Projects See real projects across the GTA
Custom homes, additions, renovations, and multiplexes, designed and built for homeowners, architects, designers, and engineers.
Start your duplex construction in Oshawa 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 and WSIB-Registered
Send your project details
Tell us what you need and we’ll get you a quote. Free, no-obligation consultation and site visit with our design team.
Duplex Construction Near Oshawa
View all service areas →Andare Homes provides duplex construction, designed and built by one accountable team across the GTA.