Second-storey, rear and side additions, garden and laneway suites and garage conversions, designed, permitted and built by one team.
Serving Thornhill, Woodbridge, Maple and more
Vaughan Home Renovations: Additions, Kitchens and Whole-House Upgrades in Thornhill and Woodbridge
In Thornhill we added a 600 sqft family room and rebuilt the kitchen in 18 weeks. Vaughan's 1980s-2000s homes are well suited to additions and main-floor opens.
- Permits filed in-house
- Quote requests reviewed within 1 business day
- $5M CGL + WSIB
22+
Years in the GTA
300+
GTA projects
92%
On schedule (2024)
Reviewed in 1 Business Day
Get Your Free Written Quote
Reviewed personally by Royce (Roy) S. and Senior PM Nolan K.
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We review every request within 1 business day and will call you to book a site visit.
- 22+ Years
- $5M CGL + WSIB
- Written Warranty Registered
- 300+ Projects
- COI in 1 Business Day
Know the Risks First
Vaughan Home Renovation Problems, Solved Before You Sign
The local problem
Rear addition plans that run into a Woodbridge or Maple heritage district
What you seeThe addition looks simple on paper, but the lot sits inside a heritage district and the design comes back asking for changes to height, materials or windows.
Why it happens hereThe city has four Heritage Conservation Districts (Kleinburg-Nashville, Maple, Thornhill and Woodbridge), and exterior changes inside them fall under Part V of the Ontario Heritage Act.
How we fix itOur home addition team checks the district plan at feasibility, designs the massing and materials to its guidelines and files the heritage permit together with the building permit.
Budget killer 1
Permit + Committee of Adjustment delays
6-16 weeks of approvals and $8K-$40K in consultant fees when design ignores zoning, heritage and conservation rules.
Budget killer 2
Hidden conditions behind old walls
Knob-and-tube wiring, asbestos, 60-amp service, lead solder and rot found after demolition with no agreed pricing.
Budget killer 3
Material scope creep
Unrealistic allowances for tile, fixtures and flooring that double mid-build.
The Whole House Renovation Fix
In-house permit coordination, a 5-8% discovery contingency on Tier 2+ contracts, and materials allowances locked in writing with a signed change-order protocol.
Before You Start
What to Plan For Before You Renovate
Vaughan families tend to stay put and grow into their homes. The 1980s-2000s houses of Thornhill, Woodbridge and Maple have good bones but dated kitchens, closed main floors and not enough room for everyone. Our Thornhill client added a 600 sqft family room and a new kitchen in 18 weeks on a fixed price, with draws tied to inspections. That is the model for most of our projects here: plan the approvals, lock the price, build on schedule.
Infill, additions + upgrades
Family-room additions and kitchen rebuilds in Thornhill and Woodbridge; basement finishing in Maple.
Home additionsCommercial
Retail and office fit-outs along Highway 7 and in Vaughan Metropolitan Centre.
Commercial renovationServices
Additions, Kitchens and Basements for 1980s-2000s Homes
Every service below is available here, delivered by the same design-build team and fixed-price contract behind our home renovations across Toronto and the GTA, with permits filed through City of Vaughan.
Tier 1 kitchen refreshes and Tier 2 full kitchen guts with custom cabinetry, islands, stone counters and pro appliances.
Finished basements, legal second-unit suites and underpinning or bench-footing to gain ceiling height, waterproofed first.
Multi-room and full-house gut renovations (Tier 3) with structural reconfiguration, new mechanicals and finishes under one design-build contract.
Century-home restorations that keep facades, plaster, millwork and original oak while rebuilding structure and systems to current code.
Primary ensuites, family baths, powder rooms and condo baths with membrane waterproofing and premium fixtures.
High-end renovations with Calacatta and Taj Mahal quartzite, Wolf/Sub-Zero/Miele, rift white oak and Red Seal finish carpentry.
Office, restaurant, retail and medical fit-outs for landlords and tenants, with OBC Part 3 compliance and after-hours dispatch.
Office rebuilds and fit-outs with meeting pods, glass partitions, T-bar ceilings and data cabling, phased around your team.
Restaurant and cafe build-outs: commercial kitchens, NFPA 96 hoods, grease interceptors, make-up air and dining rooms.
Deadline-driven retail fit-outs: storefronts, display millwork, lighting and durable flooring, with landlord approvals handled.
How It Works
How a Family-Room Addition Gets Built
One coordinator runs design, permits and construction. Approval time is planned up front, so the schedule you sign is the one we build to.
- 1
Free estimate + site visit
We review your request within 1 business day, then visit to measure, photograph conditions and talk through priorities.
- 2
Written scope + fixed price
A written scope, hard-cap price, tier timeline and draw schedule before any design agreement.
- 3
Design (ARIDO-affiliated)
Layout, structure, cabinetry and finishes settled in a few focused meetings with our design lead.
- 4
Permits + approvals in-house
Building permits filed with City of Vaughan, plus Committee of Adjustment, heritage, tree or conservation applications when the lot needs them.
- 5
Build with weekly calls
Demolition, structure, rough-ins, inspections and finishes, with a weekly call from your project manager.
- 6
Deficiency walkthrough + written warranty
We walk every room with you, close the deficiency list and hand over your written warranty.
Tier 2+ payments follow a 6-draw schedule: 10% design, 15% permit-ready, 20% demolition, 20% rough-in, 20% substantial completion, 15% deficiency walkthrough.
Ready to Grow Into Your Home?
Get a written scope and a fixed price before you sign any design agreement. No large deposit: Tier 2+ work is paid in six draws tied to milestones, and change orders happen only when you add scope.
Local Track Record
Why Thornhill, Woodbridge and Maple Families Choose Us
- Thornhill 600 sqft family-room addition plus kitchen delivered in 18 weeks
- City of Vaughan permits and Committee of Adjustment handled in-house
- Heritage district checks for Thornhill and Kleinburg exteriors
- 6-draw payments tied to milestones, no large upfront deposit
- Old kitchen kept usable until the new one is ready when phasing allows
- Registered written warranty on every qualifying addition
Projects Near You
Recent Projects From Nearby Neighbourhoods
Real GTA projects, filtered for this area. Drag to compare before and after.
Before After Vaughan Thornhill Addition
600 sqft family-room addition + kitchen rebuild · 18 weeks · $410K
Added a 600 sqft family room and rebuilt the kitchen in 18 weeks.
Client Reviews
What Our Clients Say
Names are shown as initials and neighbourhood to protect client privacy.
"Three other builders told us a 600 sqft addition would take most of a year. Whole House Renovation gave us a fixed price, filed with the City, and built the family room and new kitchen in 18 weeks. Draws were tied to inspections, so we only paid when work was signed off. Nolan's weekly calls kept us out of the dust and in the loop. The foundation work was checked by an engineer before framing started, and the old kitchen stayed usable until the new one was ready. Worth every dollar of the $410K."
"Our 1940s kitchen had a wall in exactly the wrong place. They brought in the engineer, put in a beam and moved the sink to a new island without opening the dining room ceiling twice. The written scope listed every allowance, so we knew where all $96K was going. Done in nine weeks."
"Landlord approvals, night work in a busy street and a fixed opening date. They delivered our Yorkville flagship with the storefront, millwork and lighting done right, and the deficiency list was short."
Local Knowledge
Renovation Know-How Across Vaughan
How We Work in Thornhill, Woodbridge and Maple
We cover the city from Highway 7, Highway 400 and Highway 407, with Thornhill jobs off Bathurst Street and Centre Street, Woodbridge jobs off Islington Avenue and Highway 27, and Maple jobs off Major Mackenzie Drive and Keele Street. Driveways on most lots here give us room for a bin and material drops without blocking the street.
Permits are filed with the City of Vaughan Building Standards department. We prepare the drawings, file the application and book every inspection. When an addition needs a minor variance, we handle the Vaughan Committee of Adjustment application too.
Parts of Thornhill and Kleinburg sit within heritage conservation districts, where exterior changes like additions, windows and porches can need heritage approval. We check this at the start so the design is right the first time.
The Homes We Renovate
Most renovation work here happens in 1980s-2000s two-storey homes: brick and stone fronts, 9 foot main floors in the newer builds, separate living and family rooms, and kitchens with oak or thermofoil cabinets that have reached the end of their life. These homes suit rear family-room additions, main-floor opens where we remove or replace a load-bearing wall with an engineered beam, and full kitchen rebuilds with an island.
Thornhill's older pockets and Kleinburg village carry 19th and early 20th century homes inside heritage districts, where restoration rules shape what is possible outside. In Maple, Concord and Vellore Village we finish basements and build legal suites, and along Highway 7 and the Vaughan Metropolitan Centre we take on office and retail fit-outs.
Neighbourhoods we work in
- Thornhill
- Woodbridge
- Maple
- Kleinburg
- Concord
- Vellore Village
Postal codes (FSAs) we cover: L4J, L6A, L4K, L4L, L4H, L3L
The area at a glance
- Municipality
- City of Vaughan
- Permit office
- City of Vaughan Building Standards
- Response
- Quote requests reviewed within 1 business day
- Landmarks
- Vaughan Metropolitan Centre · Vaughan Mills · McMichael Canadian Art Collection · Cortellucci Vaughan Hospital · Promenade Shopping Centre
- Main routes
- Highway 400, Highway 407, Highway 7
- Transit
- Line 1 Yonge-University (Vaughan Metropolitan Centre); GO Barrie line (Maple, Rutherford); YRT Viva on Highway 7
Highways 400, 407 and 7 connect Thornhill, Woodbridge and Maple, and the Line 1 terminus at Vaughan Metropolitan Centre plus Maple and Rutherford GO cover the transit side.
Got Questions?
Vaughan Renovation FAQs
How long did your Thornhill addition take?
18 weeks for a 600 sqft family-room addition plus a kitchen rebuild. The foundation was checked by an engineer before framing, and the draws were tied to inspections, so the client only paid for work that had been signed off.
Do Thornhill heritage areas affect my renovation?
Parts of Thornhill sit in a Heritage Conservation District whose plan dates to 2007, so exterior changes may need a heritage permit. It is one of four districts in the city, with Kleinburg-Nashville, Maple and Woodbridge. Interior work is usually more flexible, and many additions can be designed to sit well within the guidelines.
What does an addition cost in Vaughan?
Additions typically run $200K-$600K; whole house plus addition $350K-$1.2M+. The price is written and capped before design, with a 5-8% discovery contingency for anything hidden in the existing structure.
Do you finish basements in Maple and Woodbridge?
Yes, finished basements and legal suites, typically $45K-$180K. We waterproof first, then frame, insulate with Roxul Safe'n'Sound and finish.
Where are Vaughan permits filed?
With the City of Vaughan Building Standards department. We handle drawings, filing and inspections, plus any Committee of Adjustment application if a minor variance is needed.
Still have a question?
Call the 24/7 line or send your project details. We reply within 1 business day.
Keep Exploring
Nearby Service Areas
- North YorkHogg's Hollow, York Mills, Bedford Park
- Richmond HillBayview Hill, South Richvale, Mill Pond
Quote requests reviewed within 1 business day
Price Your Vaughan Addition or Kitchen in Writing
Send your project details and we will confirm scope, permit path and a written fixed price. Quote requests reviewed within 1 business day.
- Fixed price pre-design
- $5M CGL + WSIB
- Written warranty