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Home Additions
Interior Services
Home Additions in Oakville & the GTA
Need more space without moving? PRYSM designs and builds custom home additions that expand your living area while blending seamlessly with your existing home. From second-storey additions and rear extensions to side bump-outs and above-garage expansions, we add square footage that adds real value to your property. Our design-build approach ensures your addition looks and feels like it was always part of the original home.
What We Deliver
Our Home Additions Process
Feasibility Assessment
On-site evaluation of your property, zoning bylaws, and structural requirements to determine the best addition strategy.
Architectural Design
Full architectural drawings and 3D renderings showing how the addition integrates with your existing home.
Foundation & Structural
Engineered foundations, structural steel, and framing that meet or exceed Ontario Building Code requirements.
Interior Finishing
Complete interior finishing including drywall, flooring, paint, trim, lighting, and custom millwork.
Mechanical Systems
HVAC extension, electrical panel upgrades, and plumbing connections for the new addition.
Exterior Integration
Matching siding, roofing, and exterior finishes so the addition is indistinguishable from the original structure.
Our Work
Home Additions Projects
Frequently Asked Questions
Home Additions FAQ
How much does a home addition cost in the GTA?
Home addition costs depend on the type of addition, size, and finishing level. We provide detailed estimates after your design consultation.
Do I need a permit for a home addition?
Yes. All home additions in Ontario require building permits. PRYSM handles the entire permitting process.
How long does a home addition take to build?
Most home additions take between 4 to 8 months from design to completion.
Will a home addition increase my property value?
Absolutely. Well-designed home additions typically provide a strong return on investment by adding usable square footage.
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Start Your Project
Ready to Transform Your Home?
Book your free design consultation and discover how PRYSM can bring your vision to life. From concept to completion, we handle every detail.
Or call us directly: (647) 204-9015