Home Additions in Vaughan
From older homes in central Woodbridge and Thornhill to Maple and Kleinburg properties, we design and build Vaughan home additions and extensions from our head office on Weston Road in Woodbridge.
Why Vaughan Additions Need a Different Approach
Vaughan's older neighbourhoods are where most additions happen. Around the historic Woodbridge village, suburban streets grew from the 1950s and spread outward through the 1960s, and Thornhill filled in through the 1960s and 1970s. Those bungalows and side-splits on generous lots are ideal for a second storey or a rear family room and kitchen extension, and they are close enough to our Woodbridge head office that we know the streets well.
Vaughan's zoning by-law protects the character of these areas. Lots in established neighbourhoods carry an "-EN" suffix that caps the height of a house at the zone limit or the existing height plus 3.0 m, whichever is less, but never below 8.5 m. That shapes how tall a second storey can be, so we check your lot's zone before design starts and plan the roofline to fit.
Woodbridge, Maple, Thornhill and Kleinburg-Nashville are heritage conservation districts, where any work that changes a property's appearance needs a heritage permit. Every addition permit in Vaughan also carries a $2,575 returnable fee, and lots near the Humber or Don valleys may need a TRCA permit. We handle the drawings, the City of Vaughan permit and every inspection from our head office at 7777 Weston Road.
- Licensed & insured contractors
- Transparent, itemized pricing
- Permits & approvals handled for you
- On-time delivery, every project
Home Additions We Build in Vaughan
Every kind of Vaughan addition and extension, from a few extra feet to a whole new floor.
Second-Storey Additions
A full new floor on a Woodbridge or Thornhill bungalow, designed within the established-neighbourhood height limit.
Rear Extensions
Family rooms, larger kitchens and main-floor primary suites built out the back of the house.
Heritage District Additions
Additions in Woodbridge, Maple, Thornhill and Kleinburg-Nashville, permitted to the district plan.
Multigenerational Additions
Main-floor in-law suites with their own bathroom for parents and grandparents.
Above-Garage Additions
A bedroom suite or office built over an existing attached garage.
Bump-Outs
A few extra feet for a kitchen, breakfast area or mudroom, with the same zoning check and permit.
What Makes an Addition in Vaughan Different
These are the things that actually decide what you can build in Vaughan, how long approvals take and what it costs.
Established-Neighbourhood Height
The "-EN" suffix caps height at the zone limit or existing height plus 3.0 m, whichever is less, but not below 8.5 m.
Returnable Permit Fee
Vaughan collects a $2,575 returnable fee on each permit for an addition to a detached, semi or townhouse.
Permit Fees
The 2026 building permit fee for a residential addition is $21.82 per square metre, with a $195 minimum.
Minor Variance Fee
Additions to houses with up to three units fall under Vaughan's 2026 "Minor Development Type 2" variance fee of $2,441.
Heritage Districts
Woodbridge, Maple, Thornhill and Kleinburg-Nashville need a heritage permit for work that changes a property's appearance.
Humber and Don Valleys
Lots near the valleys may need a TRCA permit and do not get the provincial 90% setback relief.
What a Home Addition Costs in Vaughan
Across the GTA, a small bump-out typically costs $30,000 to $70,000, a single-storey rear or side addition $80,000 to $200,000, and a second-storey addition $150,000 to $400,000 or more. Per square foot, most single-storey additions land between $300 and $500, and second storeys between $350 and $550, because the existing structure has to carry the new floor and a staircase is added.
In Vaughan, the big variables are going up versus out and whether the lot sits in a heritage district or near a valley. A second storey within the height limit is usually the most space for the money on a bungalow lot. Budget separately for the survey, drawings, engineering, approvals, the returnable permit fee and a 10 to 15% contingency.
Vaughan Neighbourhoods We Serve
We build additions right across Vaughan from our head office in Woodbridge.
Our Simple 5-Step Process
From the first site visit to the final inspection, we make adding space to your Vaughan home clear and stress-free.
Reach Out
Call us or fill out our quick form to tell us how much space you need.
Free Consultation
We visit your home, review your lot and zoning, and talk through design, budget and approvals.
Detailed Estimate
You receive a transparent, itemized estimate within 2 to 3 business days.
Review & Refine
We walk through the proposal together until you are fully confident.
Sign & Start
We lock in your start date and handle scheduling, permits and coordination.
Recent Additions and New Living Space
A look at additions, extensions and new living space we have built across Toronto and the GTA.
Vaughan Home Addition FAQs
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Ready to Add Space to Your Vaughan Home?
Book a free consultation. We will check what your lot allows, tell you which approvals your design needs and give you an itemized estimate.
Serving Vaughan from our head office — 7777 Weston Road, Woodbridge, ON L4L 0G9 · All Vaughan renovation services