Home Additions & Second Storeys in Vaughan
Create more room in the home you love. We coordinate design, engineering, permits and construction for additions and second-storey projects.
Finished Spaces Across the GTA
Explore our team's residential work, from kitchens and bathrooms to complete home transformations.
In The Media
Don't take our word for it! Built By Pros is honoured to be featured in these reputable publications. Have a look for yourself!
Meet Our Happy Clients
Hear directly from GTA homeowners who trusted us with their renovation.
Ashley HGoogle review
Read on GoogleWe recently completed a full home renovation plus addition with Built By Pros and we were so happy with our decision! We looked at many different companies and ultimately decided on Built By Pros after meeting with Ricardo and Suzanne and getting a good feeling from them right off the bat. They were very helpful and involved in every step of the process which gave us complete trust and confidence in them. They hold themselves to a high quality and customer service standard and it shows through their approach and their work.
The whole team was great to work with. The crew was friendly, respectful, helpful and went the extra mile to ensure all our requests were accommodated. The project was on budget and on time and we couldn’t have asked for a smoother process.
We have now moved into our new house and are loving our new space. If you’re looking to do a home reno, look no further than Built By Pros!
Paolo KorreGoogle review
Read on GoogleIncredible team to work with, exceptional quality of work!
We've just underwent a major home renovation - When you are taking on a project of this magnitude, you need to have trust in your partners, and the Built by Pros team earned our trust every step of the way. They worked tirelessly to get the job done on time, and to a high quality of finish. They were honest and open in their communications - which is so important when you are renovating a 100+ year old home and bound to discover some issue hidden behind dry wall. They were reasonable in their pricing - the team has a great designer and architect who helped us find creative design solutions that helped us fall in love with our house, but also do it within budget.
For people in the GTA considering a home reno - we highly recommend this team.
Sana ZiauddinGoogle review
Read on GoogleI chose Built By Pros for my en suite bathroom renovation after meeting with them at the Toronto Home Show. From the initial meeting with Suzanne to subsequent conversations about what I wanted for the renovation as a part of the contract signing - the process was smooth and feedback was always heard and quickly addressed. I felt very comfortable moving forward with the contract and project given the amount of details provided for the initial assessment and a clear understanding of the project milestones, cost and timelines. It was a pleasure working with Suzanne and Petra through the planning and construction - I had an idea / vision of what I wanted the bathroom to look like and they both made sure it was possible, down to every last detail. The crew was also great - very meticulous with their work and receptive to feedback (also very detail oriented which was excellent).
The bathroom construction timeline itself was extended a bit but was totally worth the wait. It is beautiful, functional and exactly what I hoped for. I would highly recommend Built By Pros for your construction project.
Our Process
From first consultation to final walkthrough — a clear, itemized path with no surprises. Optional steps flex to fit your project's scope.
Consultation & Quote
A thorough walkthrough of your space to understand your goals and budget, followed by a clear, itemized quote with no hidden costs.
Contract
We formalize the agreement with a straightforward contract that outlines scope, timeline, and payment milestones.
Change Order Approval
If scope shifts, every change is documented in writing before any additional work begins.
Optional Step
Design & Confirm Scope
Together we finalize the scope of work, select materials and finishes, and lock in a transparent, itemized price.
Optional StepCAD, Engineering & Permits
We handle all CAD drawings, structural engineering sign-offs, and municipal permit applications on your behalf.
Optional Step
Detailed Project Planning
A week-by-week schedule covering trades, material deliveries, and inspections so every sub-contractor is on-site at the right time.
Construction Phase
Daily site supervision and regular updates. We keep a clean, safe jobsite and resolve field decisions quickly.
Project Kick-Off Meeting
We bring the entire site team together and walk you through the schedule, site access, and who to contact with questions.
Complete & Closeout
A full walkthrough, our deficiency list, and every warranty and permit handed over — total peace of mind.
More Services in Vaughan
Full-service design and construction — one seamless team from first sketch to final walkthrough.
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Improve existing office spaces with a professional finish that meets the professionalism & functionality of your company.
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Custom home design and construction on vacant lots or existing properties, with one team coordinating design, permits and the build.
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Upgrade existing spaces with quality craftsmanship to better meet the needs of your family.
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Custom solutions to maximize the return on your property investment.
Learn MoreAging in Place Renovations in Vaughan
We have the ADA design training in-house to ensure your home is ready for your golden years, even when you're not.
Learn MoreTransforming Your Home with Expert Additions in Vaughan
Since 2008, Built By Pros Inc. has specialized in helping homeowners across Vaughan expand their footprint without leaving the communities they love. Whether you are living in the historic streets of Kleinburg or a modern development in Vellore Village, a home addition is one of the most significant investments you can make. Our integrated approach ensures that from the first architectural sketch to the final coat of paint, every detail of your house addition in York is handled with professional oversight. Many homeowners find that their current space no longer meets the needs of a growing family, yet the cost of moving and land transfer taxes makes staying and expanding a far more logical financial decision.
Our team understands that a successful addition must look like it was always part of the original structure. We specialize in seamless transitions, ensuring that new rooflines, siding, and foundations integrate perfectly with your existing home. We leverage our deep experience as a renovation contractor in Vaughan to navigate the complexities of local site conditions. From sprawling estates in Woodbridge to compact suburban lots in Maple, we tailor our construction methods to suit the specific geotechnical and architectural requirements of each neighborhood. Our goal is to provide a stress-free experience that maximizes both your square footage and your property value.
When planning a project of this scale, it is vital to work with designers who understand the City of Vaughan building permits process. A building permit is mandatory for any addition over 10 square meters, and our team handles the entire technical submission through the City's ePlans portal. We ensure all drawings are prepared by a qualified designer with a valid Building Code Identification Number (BCIN), as required by the Ontario Building Code. This precision prevents costly delays and ensures your project starts on a solid legal and structural foundation.
Local Considerations for Vaughan Home Additions
Navigating the regulatory landscape in Vaughan requires specialized local knowledge. The city operates under the Comprehensive Zoning By-law 001-2021, which dictates strict standards for building heights, rear-yard setbacks, and lot coverage. For example, if you are planning a rear extension in an established area like Woodbridge, we must ensure the new structure does not infringe on protected easements or exceed the permitted percentage of lot occupancy. If a design requires a minor deviation from these rules, such as a slightly closer side-yard setback to accommodate a new garage, we represent our clients before the Committee of Adjustment to secure the necessary variances.
Climate also plays a critical role in how we build in Southern Ontario. Vaughan experiences significant seasonal temperature swings, necessitating robust HVAC integration and superior insulation. When adding a second storey or a sunroom, we pay special attention to the thermal envelope to ensure the new space remains comfortable during harsh winters and humid summers. Furthermore, certain areas of Vaughan fall under the jurisdiction of the Toronto and Region Conservation Authority (TRCA), particularly those near the Oak Ridges Moraine. In these zones, excavation and drainage plans must meet additional environmental standards to protect the local watershed and prevent erosion on sloped properties.
Historical character is another major consideration, particularly for homeowners in Kleinburg. Additions in this heritage-sensitive area often require approval from the Heritage Vaughan Committee. Our design team is adept at creating home additions that respect the historic aesthetic while providing modern functionality. We carefully select materials that match heritage masonry or wood-trim details, ensuring the new construction honors the village's unique architectural legacy while offering the open-concept living space today's families demand.
Pricing Factors and Budgeting for Your Vaughan Addition
Understanding the financial commitment of a home addition is essential for effective planning. According to recent market data on home addition costs in Vaughan, a single-room addition (200-400 sq ft) typically ranges between $150,000 and $250,000. This price typically covers the foundation, framing, roofing, and full interior finishes. For those seeking more substantial space, a full second-storey addition can range from $250,000 to over $400,000, depending on the structural reinforcements required for the existing main floor walls and foundation. These figures are influenced by the complexity of the tie-in between the old and new structures and the quality of interior finishes selected.
Several factors unique to the York Region can impact your budget. Permit fees in Vaughan are based on the square footage and type of construction, and while they are a necessary expense, we help you calculate these early to avoid surprises. Material availability and seasonal demand also play roles; for instance, starting a foundation in late autumn may require specialized heating equipment for concrete pouring, which can add modest costs. Conversely, scheduling your design phase during the winter months allows us to have all house extensions in Vaughan ready for a spring start when the ground thaws and construction efficiency peaks.
At Built By Pros Inc., we utilize a transparent, itemized quoting system to ensure you understand where every dollar is spent. We account for critical 'hidden' costs such as upgrading your electrical panel to support the new rooms or extending your existing furnace and ductwork to handle the increased heating load. In older parts of Thornhill or Woodbridge, we also check for outdated plumbing or structural deficiencies that must be addressed before the new addition can be safely coupled to the home. By identifying these factors during the detailed project planning stage, we provide a fixed-price contract that protects you from the budget creep common in less professional renovation projects.
Neighbourhoods We Serve in Vaughan
Home Additions throughout Vaughan and its surrounding communities.
Real Projects, Real Results
How our team handled the site conditions, structure and systems on recent GTA projects.
Rebuilt Home & Structural Modernization – North York
Executed a complete home rebuild over an existing foundation, installing a heavy steel framework to create open-concept living spaces with tall ceilings.
Read the Case StudyTriplex to Single-Family Conversion
Converted a multi-unit triplex into a cohesive single-family residence, integrating and repurposing three existing electrical panels and mechanical heating systems.
Read the Case StudyWhy Choose Us for Home Additions in Vaughan
Heritage-Sensitive Design
For homes in areas like Kleinburg, we provide specialized design services that comply with heritage committee requirements. We preserve the historic exterior aesthetic while completely modernizing the interior layout for 21st-century living.
Zoning & Variance Expertise
We navigate the Vaughan Comprehensive Zoning By-law 001-2021 on your behalf, handling all Committee of Adjustment applications. This ensures your addition maximizes lot potential without running into legal or municipal setbacks.
Climate-Resilient Engineering
Our additions are engineered specifically for the Ontario climate, featuring high-efficiency insulation and advanced HVAC integration. This ensures your new second storey or sunroom stays perfectly tempered through Vaughan's freezing winters and hot summers.
Home Additions in Vaughan: Your Questions Answered
How long does it take to get a home addition permit in Vaughan?
Typically, the City of Vaughan processes single-family residential permits within approximately 10 business days once a complete application is submitted. However, this timeline can extend if your project requires reviews from other departments, such as Urban Design for heritage properties or the TRCA for environmentally sensitive areas. We manage the entire submission through the ePlans portal to ensure all technical drawings are compliant from day one, minimizing the risk of re-submissions.
Are there specific size limits for house extensions in Vaughan?
Additions in Vaughan are governed by the Comprehensive Zoning By-law, which limits building height and lot coverage based on your specific zoning district (e.g., R1, R2). Most residential zones allow for a maximum lot coverage of roughly 35-40%, including all structures on the property. We conduct a thorough zoning analysis during our initial consultation to determine exactly how large your addition can be while maintaining the required side and rear-yard setbacks.
Can I stay in my home during a second-storey addition?
While it is technically possible to stay in the home during a rear extension, second-storey additions usually require the roof to be removed, making the main floor uninhabitable for a period. For safety and comfort, we generally recommend that families relocate for 3 to 5 months during the primary structural phase. We coordinate our schedule tightly to minimize this 'out-of-home' time, focusing on getting the new structure enclosed and weather-tight as quickly as possible.
Do I need a new HVAC system for my home addition?
It depends on the size of the addition and the capacity of your existing furnace and AC units. For a single-room extension, we can often extend the current ductwork; however, for a full second-storey addition, your existing system may be undersized. In these cases, we may recommend a dedicated heat pump or a high-efficiency upgrade to ensure the new space receives proper airflow and climate control without straining your old equipment.
Renovation Insights
Tips and guidance from our design and build team.
Navigating Toronto’s Home Adaption Grants for Seniors in 2026
Discover how to access essential municipal and provincial grants for senior-friendly renovations in the GTA. Learn how accessible modifications like roll-in showers and widened doorways enhance safety while increasing your property's long-term value.
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How to Open Up Floor Plans in Older GTA Homes Using Structural Steel
Discover how structural steel beams allow renovators to remove load-bearing walls and create airy, open-concept layouts in older Greater Toronto Area homes. Learn the technical nuances of load paths, subterranean footings, and moisture management that ensure decades of structural safety.
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Converting a Multi-Unit Property Into a Single-Family Home on a Budget
Converting a triplex into an expansive single-family home doesn't require tearing everything down to the studs. Discover how repurposing existing electrical panels and installing hybrid heating systems can save you tens of thousands of dollars on your renovation.
Read MoreHome Additions in Other GTA Cities
Meet the Team
Ricardo Lora
Manager of Operations
Suzanne Morgan
Manager of Design & Sales
Valeria Saenz
Interior Designer
Marco Lopez
Site Supervisor
Let's Talk About Your Project
Contact us for unmatched expertise in home renovations. With experience since 2008, we deliver top-quality materials and superior workmanship — trusted by clients and built on referrals.
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