Development Charges on Commercial & Industrial Land in Ontario: Rates by Use, the Industrial Exemption, and Where Bill 23 Landed
On the same parcel, switching the use from retail to industrial can cut the regional charge by more than half. DCs are not a permit-day problem.
How are development charges calculated on commercial and industrial land in Ontario — and when do you pay?
Development charges (DCs) are not a single number. They are a schedule of per-use rates — industrial, office, institutional, retail, hotel — usually levied per square metre of gross floor area and payable in full before your building permit is issued. Three things matter most on the development side: use classification drives the rate (retail can be more than double the industrial rate on the same site); enlarging an existing industrial building by 50% or less is exempt under section 4 of the Development Charges Act, 1997; and the five-year phase-in that Bill 23 introduced was repealed by Bill 185 in 2024 — so a pro forma built on the old discount is simply wrong.
Sources: Development Charges Act, 1997, s.4; York Region non-residential DC rate schedule (effective July 1, 2024)
I am Arthur Zhao. On a commercial or industrial pro forma, development charges are the line item I most often see estimated from stale assumptions — and the one where a single misplaced digit can swallow a project’s margin. Unlike land price, DCs are not written into your purchase agreement; they live in a municipal by-law, scale by use, reset every year, and have been reshaped by a run of provincial bills since 2022. This is not the buyer’s-side story of a charge passed through into a pre-construction price — it is the developer’s view of three things: how the rate is built from use, how to capture the industrial relief, and what the rules actually are after Bill 23.
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Why this line item is bigger than it looks
A development charge is a one-time fee a municipality levies on new development to pay for the growth-related infrastructure that development triggers — water, wastewater, roads, transit, community services. The principle is «growth pays for growth». The charge is authorized by a municipal DC by-law under Ontario’s Development Charges Act, 1997. On the buyer’s side, this cost eventually gets folded into a pre-construction price (I cover that pass-through elsewhere). On the development side, a DC is a hard, non-negotiable cost that can run from six figures to eight — large enough that getting the classification or the timing wrong reshapes the whole return.
Same parcel, industrial vs retail — how far apart?
⚠️These rates are a snapshot, not a constant. Every dollar figure here is tied to a specific municipality and effective date: the York Region rates above are the version effective July 1, 2024, and York’s 2026 DC by-law (effective May 21, 2026) has since reduced the IOI band by roughly 11% and retail by about 2%. DCs are indexed annually to a construction price index and reset with each new by-law — base any project model on the current by-law from your municipality’s own site, never on the figures in this article.
The two lines of industrial relief
Industrial developers capture relief on two separate tracks. Track one is the provincial statutory exemption. Under section 4 of the Development Charges Act, 1997, enlarging an existing industrial building is exempt to the extent the new gross floor area is 50% or less of the original; go over 50% and only the portion above the threshold is charged, at the industrial rate — the whole building is not re-assessed. This exemption is province-wide and written into the statute; it does not depend on the municipality’s goodwill. Track two is municipal relief, and it varies widely. Toronto exempts industrial uses as a class from its DC; York Region does not exempt them outright but groups industrial, office and institutional (IOI) into one band priced far below retail. So «industrial» carries a very different real cost from city to city — pull the current DC by-law for your project’s municipality and check it line by line before you rely on a neighbour’s figure.
When the charge is triggered — and when cash actually leaves
The trigger is set out in section 2(2) of the Development Charges Act, 1997: a DC can be imposed where development requires a zoning change, a minor variance, a land conveyance, a plan of subdivision, a condominium description, or a building permit. But the moment cash actually leaves — for non-residential development (commercial, industrial, institutional) — is in full before the building permit is issued. York Region states it plainly: «payment of DCs is required at the building permit issuance stage». One trap for 2025: Bill 17 lets non-rental residential (condos) defer DCs to occupancy, but that relief does not extend to commercial or industrial — those still pay at permit. Some municipalities (York Region among them) run their own deferral programs for office and retail; those are applied for separately.
💡 My own take: on a development project, use classification is the single biggest — and earliest lockable — variable in the DC. Time spent at the planning and site-plan stage nailing down the use definition, exemption eligibility, and relief conditions with the municipal planning department usually pays back more than trimming almost any construction line later. A DC is not a permit-day cost — it starts being priced the moment you decide what the land will be used for.
Where Bill 23 actually landed (as of July 2026)
Ontario’s DC legislation has moved repeatedly, and estimating from three-year-old memory is how people get it wrong. As of July 2026, the key markers are:
Bill 23 (More Homes Built Faster Act, 2022 — Royal Assent Nov 28, 2022): introduced a five-year phase-in on new DC by-law rates (only 80% collectible in year one, rising annually to 100% in year five) plus a batch of mostly residential exemptions.
Bill 134-related exemptions: DC exemptions for affordable and attainable housing units came into force July 1, 2024.
Bill 185 (Cutting Red Tape to Build More Homes Act, 2024 — Royal Assent June 6, 2024): repealed Bill 23’s five-year phase-in — municipalities can now collect the full by-law rate immediately, with no transitional discount; it also restored background-study costs as recoverable and tightened the window to obtain a building permit after the rate is locked.
Bill 17 (Protect Ontario by Building Faster and Smarter Act, 2025 — Royal Assent June 5, 2025): deferred non-rental residential DCs to occupancy and removed interest on deferred residential DCs (in force Nov 3, 2025) — but, as above, that relief lands on the residential side; commercial and industrial payment timing did not loosen with it.
Bottom line: if your model still assumes a phase-in discount in the early years, it is out of date — Bill 185 removed it.
ℹ️Disclaimer: This is general information. As of July 2026, Ontario’s DC legislation is still changing; rely on the official version for exact wording and in-force dates. For any specific project, confirm rates, exemptions, and relief eligibility in writing with the municipal planning department, and consult your real estate lawyer and planning consultant. This is not tax or legal advice.
- Development Charges Act, 1997, s.4 (industrial expansion exemption) and s.2 (triggers)
- York Region non-residential development charge rate schedule (effective July 1, 2024)
- York Region 2026 DC by-law (effective May 21, 2026; IOI down ~11%, retail ~2%)
- City of Toronto development charges overview (industrial uses exempt)
- Bill 185, Cutting Red Tape to Build More Homes Act, 2024 (Legislative Assembly of Ontario)
- Bill 17, Protect Ontario by Building Faster and Smarter Act, 2025 (Legislative Assembly of Ontario)
Frequently Asked Questions
How far apart are commercial and industrial development charges?
It depends on the municipality and the use classification. Using York Region’s July 1, 2024 rates, industrial/office/institutional (IOI) is about $308.40 per square metre while retail is about $766.38 — more than double; Toronto, by contrast, exempts industrial uses entirely. There is no single province-wide number — you have to check the current DC by-law for your project’s municipality.
Do I always pay a development charge to enlarge an existing industrial building?
Not necessarily. Under section 4 of the Development Charges Act, 1997, an enlargement is exempt to the extent it is 50% or less of the original gross floor area; above 50%, only the excess is charged at the industrial rate. It is a province-wide statutory exemption, but you claim it at the building-permit application stage and the municipality verifies it.
When are development charges payable — can they be deferred?
For commercial and industrial development, DCs are generally paid in full before the building permit is issued. The «defer to occupancy» relief introduced by Bill 17 in 2025 applies only to non-rental residential (e.g. condos), not to commercial or industrial. That said, some municipalities (such as York Region) run their own deferral programs for office and retail — applied for separately.
I heard Bill 23 discounted development charges in the early years — is that still true?
No. Bill 23 (2022) did set a five-year phase-in (80% in year one, rising annually), but Bill 185 in 2024 repealed that phase-in. As of July 2026, municipalities can collect the full by-law rate immediately — do not assume a transitional discount when you model a project.
Arthur Zhao
Real Estate Broker · FRI · ABR · SRS · PSA · MCNE · E-PRO · CLHMS & GUILD Elite · REAIS
VP & Branch Manager, Bay Street Group Inc.
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