RENOVATIONS
Vaughan Renovation Permits
Inside-the-house work and new basement walk-ups, including the grading permit a new basement entrance triggers in Vaughan.
◆ Vaughan permit help
Vaughan Building Permit Services for Second Units, Additions and Infill Homes
Homeowners, builders and business owners in Woodbridge, Maple, Kleinburg, Thornhill and Concord use iPermit’s building permit services Vaughan-wide for lot checks, permit drawings, engineering input and the upload to the City’s Online Permitting Portal, backed by the same permit expediting services we provide across Toronto and the GTA. Our office is at 7250 Keele Street, so a Vaughan permit is local work for us. It is also a city with two zoning by-laws in play, four heritage districts, a returnable fee on almost every house permit and an hourly charge for every review after the first resubmission.
Three Units per Lot: Vaughan's Second Unit Rules
Since March 25, 2025, a Vaughan lot on municipal water and sewer can carry two additional residential units: two inside a detached house, semi or townhouse, or one inside the house and one in a detached accessory building. Three units is therefore the limit on most lots; a fourth takes a rezoning or a variance first.
The by-law adds rules that decide whether a layout works before the Building Code is even considered:
- Parking. One extra space for each additional unit on top of the main home’s requirement, except inside a Protected Major Transit Station Area.
- Entrance. The new unit’s door goes on a side or rear wall, or off a shared vestibule, never on the same wall as the main entrance, with a hard-surfaced walkway at least 1.2 m wide or access from the driveway.
- Size. No additional unit can have more floor area than the principal dwelling.
- Garden suites. A unit in an accessory building must sit at least 4.0 m from the house, and lot coverage on a lot with an additional unit can reach 45% or the zone’s maximum, whichever is greater.
- No additional unit is allowed in a building with a bed and breakfast or home occupation.
For an existing basement apartment, Vaughan Fire and Rescue Service carries out the final inspection once the upgrades are built, and some units need a building permit even when no construction is required. The City also requires renovators and contractors working in Vaughan to hold a City business licence. Our residential building permits page lists every home project we take on, from garden suites to new builds.
◆ Feasibility first
Two Zoning By-laws on One Vaughan Lot
Vaughan Council enacted Comprehensive Zoning By-law 001-2021 on October 20, 2021, and most of it came into force after the Ontario Land Tribunal’s order in December 2022. Most of it, not all: parts are still under appeal, lands near Yonge Street and Steeles Avenue were left out, and lots rezoned under the old By-law 1-88 after January 1, 2010 keep their site-specific rules. Where 001-2021 is under appeal, the City checks applications that are not transitioned against both by-laws.
So before any design work, a building permit consultant Vaughan owners bring in has to establish which by-law, or which pair, applies to the lot and then check setbacks, height, coverage and parking against it. Where it can’t comply, the Committee of Adjustment hears the variance: $1,886 in 2026 for a variance tied to an additional unit, deck or garage, and $2,441 for one tied to an addition. The variance decision must be final before Building Standards will issue a permit.
Heritage Permits, Tree Declarations and Grading in Vaughan
Three approvals outside the Building Code decide the pace of most Vaughan files.
Heritage districts. Kleinburg-Nashville, Woodbridge, Maple and Thornhill are heritage conservation districts. New construction, additions, exterior alterations and demolition there need a Heritage Permit ($719, or $206 for minor work under 50 m²), and larger proposals go to the Heritage Vaughan Committee. Demolition in a district also needs a Heritage Clearance Letter before Building Standards will accept the permit application.
Trees. By-law 177-2025 covers private trees with a trunk of 20 cm (about 8 in.) or more at 1.4 m above grade. A tree declaration goes in with every building and demolition permit, the removal application needs an arborist report, and the City quotes 30 business days for its first response. Protection deposits run from $1,000 for a 20 to 30 cm tree to $3,193 for one over 50 cm.
Lot grading. Infill houses, additions and accessory structures need a grading permit from Development Engineering, with a refundable deposit of $10,000 for a new infill home, $5,000 for a structure over 40 m² and $2,500 for a smaller one, including a new basement entrance. Along the Humber and Don valleys, TRCA regulation can add a separate conservation permit to the list.
◆ How a Vaughan file moves
From Intake to Issued Permit in Vaughan
Vaughan files go faster when the side approvals are settled before drawing starts, so we sequence heritage, tree and grading work first and draw the house once.
01
Assess
Lot and permit history
Pull the permit history for the address and check whether the lot falls in the Kleinburg-Nashville, Woodbridge, Maple or Thornhill heritage district.
Intake
02
Check
By-law and approval check
Work out which of the two zoning by-laws applies, then list every approval the permit depends on: a heritage permit, tree permit, grading permit or TRCA review.
Feasibility
03
Prepare
Drawings, declarations and schedules
Draw the existing and new conditions, bring in structural, HVAC or plumbing design as needed, and fill out the schedules, tree declaration and energy forms Vaughan requires.
Drawings
04
File
Portal upload and comments
Upload a complete package to the City’s Online Permitting Portal, then answer examiner comments in as few rounds as possible, since every review after the first resubmission is billed by the hour.
Municipal
◆ Vaughan project types
More Vaughan Permit Services
Pick the page that matches your Vaughan project for the rules that apply to it.
SECOND UNITS
Basement Apartments in Vaughan
Second units planned around Vaughan’s entrance, parking and floor area rules, with a Fire and Rescue inspection for existing apartments.
ADDITIONS
Adding On to a Vaughan Home
Second storeys and rear or side additions, with grading and tree protection sorted out before the drawings go in.
DECKS
Decks, Porches and Walk-ups
Attached decks, covered porches and walk-ups, which need a permit at any size, plus heritage review in Kleinburg, Woodbridge, Maple or Thornhill.
GARAGES
Garages and Accessory Buildings
Detached and attached garages, with the setback checks and the grading permit Vaughan requires for accessory structures.
ZONING
Vaughan Zoning Check
A by-law check on 001-2021 and 1-88 for your address, and an honest read on whether a variance is likely.
What the City of Vaughan Charges in 2026
Most Vaughan house permits are priced per square metre of floor area. The 2026 rates from the City’s Fees and Charges By-law:
Project | 2026 City fee |
New house or addition, including a secondary unit | $21.82 per m² |
Semi-detached, townhouse or multi-unit | $23.84 per m² |
Interior alteration | $7.30 per m² |
Deck, covered porch or basement walk-up | $280 each |
Garage under 55 m² | $590 each |
Returnable fee: new house / addition or second unit | $5,150 / $2,575 |
Minimum permit fee | $195 |
Two details are worth noticing. The returnable fee is held until the permit is closed, and an open permit also attracts a yearly maintenance fee of $463 for a new home, so a file left open after the final inspection keeps costing money. And the City’s share of development charges on new homes is zero for projects that start construction between February 25, 2026 and October 31, 2027, although York Region’s charges still apply. Our own fee is separate from the City’s and depends on the scope, so we quote it once we have seen the property.
Resubmissions Cost Money in Vaughan
Vaughan follows the Ontario Building Code review targets, counted in business days from the date a complete application is accepted. An incomplete application is not processed at all.
Permit type | Review target (business days) |
Houses | 10 |
Small buildings other than houses | 15 |
Large buildings | 20 |
Complex buildings | 30 |
Resubmissions cost money here. The first review is covered by the permit fee, but the second and every later resubmission is billed at $104 an hour. Our building permit application services for Vaughan clients are set up to avoid that second round, with the application form, designer schedules, site plan, architectural, structural and mechanical drawings, the tree declaration and energy efficiency documentation, prepared by a BCIN-registered designer or licensed professional.
For a detached or semi-detached house, the City also offers a Fast Track initial review for an extra $655. Most of the time is still won or lost at the comment stage. Because the second and later reviews are billed by the hour, a permit expediter Vaughan builders hire should aim for one resubmission that closes every comment. Vaughan’s Building Standards department makes the decisions, and its timeline cannot be guaranteed.
Have a Vaughan Property in Mind?
Send us the address and a few lines about the work, and we’ll tell you which Vaughan approvals come first.
◆ Why iPermit?
A Building Permit Company Based in Vaughan
When comparing any building permit company in Vaughan, find out whose name goes on the drawings, who checks heritage, tree and grading rules before design, and who deals with the examiner’s comments. We work from 7250 Keele Street, and the people behind iPermit have been filing Ontario permits since 2006. Recent Vaughan projects include the Kleinburg Residence, a 1,500 sq ft basement renovation with a new kitchen, plumbing, HVAC and electrical changes, and the River Mill Residence in Maple, a new pool and gazebo with grading, setback and drainage review. Our part is the design and the application; reviewing, issuing and inspecting stay with the City of Vaughan.
◆ Asked by Vaughan owners
Questions Vaughan Owners Ask About Permits
The questions below come up on almost every Vaughan call: unit limits, exempt projects and what an open permit costs.
Is a fourplex allowed on a Vaughan lot?
No, not without a planning approval. The zoning stops at the main home plus two extra units, so a fourth unit means a rezoning or a variance for your address. We can tell you early whether your lot has a realistic chance.
Do I need a permit for a shed or deck in Vaughan?
Not for a detached accessory building under 10 m² (about 107 sq ft) with no plumbing, or a small freestanding uncovered deck close to grade. A deck attached to the house needs a permit at any size, and exempt work must still meet the zoning by-law.
Do I need a permit to finish my basement?
Yes, if the work includes new walls, plumbing, ductwork or structural changes. Electrical work is permitted separately through the Electrical Safety Authority, usually by your electrician.
What does a pool need in Vaughan?
A pool enclosure permit from Development Engineering: $929 for an in-ground pool in 2026, plus a $5,000 security deposit returned once the enclosure passes inspection.
Can you take over an application that is already under review?
Often, yes. Send the submitted drawings and the City’s comments, and we’ll confirm the remaining scope before any work starts.