Ontario Building Safety Regulations

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Ontario Building Safety Regulations at a Glance

Requirement

Applies To

Cycle

Next Deadline

Penalty

O. Reg. 506/18 (EWRB)

Privately owned buildings with 50,000 sq. ft. (4,645 m²) or larger

Annual

July 1 each year (2025 data: July 1, 2026)

Fines under the Electricity Act, 1998; public disclosure of non-compliance

OBC 3.2.7.9 — Emergency Power for Building Services

Buildings over 36 m (approx. 118 ft.) measured from grade to floor level of top story

Every 10 years

10 years from previous inspection

Code enforcement; occupancy implications

Facade and Structural Inspections

No provincial mandate for existing buildings

No mandated cycle

Voluntary best practice

No provincial penalty; civil liability exposure if failure causes injury

Sources

Ontario Building Safety Regulations: What Building Owners Need to Know

In the province of Ontario, Canada, there are two active regulatory requirements for certain buildings that meet the mandates’ thresholds.

Ontario Regulation 506/18: Reporting of Energy Consumption and Water Use

Under the Electricity Act, 1998, O. Reg. 506/18 (EWRB) requires the previous year’s energy and water usage of privately owned buildings, that are 50,000 sq. ft. (4,645 m²) or larger, be reported annually by July 1. Reports need to be submitted to the Ministry of Energy and Mines via ENERGY STAR Portfolio Manager.

The penalty of missing the deadline can include fines and public disclosure of non-compliance. Buildings 100,000 sq. ft. or larger also require third-party data verification in Year 1 and every five years thereafter. Publicly owned buildings, or buildings where more than 50% of the gross floor area is occupied by a public agency, are exempt from reporting.

Ontario Building Code, Article 3.2.7.9: Emergency Power for Building Services

Under the Ontario Building Code (2024 edition, in effect January 1, 2025), OBC 3.2.7.9 requires emergency power system inspections every 10 years for buildings over 36 m (approx. 118 ft.) in height, measured from grade to top story floor level. The OBC governs all new construction, but does not mandate ongoing inspection cycles for existing building envelopes. Instead, building owners bear the full responsibility of proactive maintenance.

The absence of a facade inspection mandate is a well-documented regulatory gap. The 2014 Elliot Lake Commission of Inquiry recommended periodic structural inspections for existing buildings, but as of 2025, this recommendation has not been enacted. In practice, well-managed buildings in Ontario conduct voluntary condition assessments on a five-year cycle, the same cadence used in mandated programmes in New York City and Quebec.

O. Reg. 506/18 (EWRB) and OBC 3.2.7.9 (OBC): What Applies to Your Building

Key Definitions Used

Building Height

  • Measured from grade to the floor level of the top story, not the roof
  • OBC threshold: more than 36 m (approx. 118 ft.)

Certified Professionals

EWRB data verification must be provided by a professional with one of the following credentials:

  • Professional Engineer (P.Eng.)
  • Building Energy Technology Certification
  • Building Operator Certification
  • Building Science Specialist of Ontario
  • Certified Energy Auditor
  • Certified Building Commissioning Professional
  • Portfolio Manager certification

OBC inspections must be completed by a registered architect or licensed P.Eng.

Gross Floor Area (GFA)

  • Total enclosed floor space measured between exterior wall surfaces, in sq. ft. or m²
  • EWRB threshold: 50,000 sq. ft. (4,645 m²) or more, inclusive

Toronto Dual Reporting

Reporting Exemptions

  • Buildings owned by a public agency, or where at least 50% of GFA is occupied by a public agency, are exempt from EWRB reporting
  • One-year exemptions from EWRB reporting may be available if the property is newly constructed with a certificate of occupancy issued in the reporting year
  • Submit an exemption request or learn more about exemption criteria at the Government of Ontario website

What to Submit via ENERGY STAR Portfolio Manager

O. Reg. 506/18 | EWRB

Data Category

Required Fields

Building identification and contact

Building name, address, EWRB ID, owner/contact name and email

Building characteristics

Gross floor area in m² (Portfolio Manager uses metric), primary occupancy type, number of residential units if applicable

Energy, water, and meter data

Meter numbers and utility account IDs; annual electricity (kWh); annual natural gas/fuel consumption; annual water use (m³)

Reporting period

Full calendar year (January 1 to December 31). Common error: submitting partial-year data. Also include exemption documentation if applying.

Emergency Power

OBC 3.2.7.9

Buildings over 36 m (approximately 118 ft.) measured from grade to the floor level of the top story must maintain emergency power systems capable of operating under full load for not less than 2 hours, and have them inspected every 10 years by a registered design professional in responsible charge. The 10-year inspection cadence is governed by the Ontario Fire Code (O. Reg. 213/07), not the OBC itself, which covers installation requirements only.

Required Emergency Power Systems

Per OBC 3.2.7.9, verified against official 2024 OBC Compendium, O. Reg. 163/24.

OBC Clause

Required System

Status

Notes

3.2.7.9.(1)(a)

Every elevator serving stories above the first story in a building more than 36 m high, and every elevator for firefighters

MANDATORY

EPS not less than 2 h full load

3.2.7.9.(1)(b)

Equipment supplying water for fire suppression where supply depends solely on electrical power (see clause (4) for exemption)

MANDATORY
(conditional)

2 h full load

3.2.7.9.(1)(c)

Fans and other electrical equipment to maintain air quality per Articles 3.2.6.2. and 3.3.3.6.

MANDATORY
(conditional)

2 h full load

3.2.7.9.(1)(d)

Fans required for venting by Article 3.2.6.6.

MANDATORY
(conditional)

2 h full load

3.2.7.9.(1)(e)

Smoke control fans per Clause 3.2.8.4.(1)(c) and Article 3.2.8.7. in buildings within scope of Subsection 3.2.6.

MANDATORY
(conditional)

2 h full load

3.2.7.9.(4)

EXEMPTION: EPS for water supply under (1)(b) not required for NFPA 13D sprinkler systems (one- and two-family dwellings).

EXEMPTION

OBC 3.2.7.9.(4)

Penalties and Consequences

O. Reg. 506/18: EWRB Non-compliance

  • Failure to comply is an offence under s. 25.35.8 of the Electricity Act, 1998, with administrative penalties governed by O. Reg. 12/23
  • Non-compliance data publicly disclosed by the Ministry of Energy and Mines
  • Potential insurance implications: non-reporting properties may be considered higher risk by insurers at policy renewal

Facade and Structural Non-compliance

  • No provincial fine for failing to inspect a facade, but civil liability exposure applies if failure results in injury or property damage
  • Courts may consider whether owners acted on visible or reported signs of deterioration
  • Insurance coverage for facade-related incidents may be affected where no maintenance records exist

Proactive Maintenance

Ontario has no facade inspection mandate, but the risk of undetected building envelope deterioration is real. Rimkus engineers conduct voluntary condition assessments and envelope performance evaluations across Ontario, helping building owners identify issues early and plan capital maintenance before problems become emergencies.

Other Regulatory Requirements for Buildings

  • Ontario Fire Code (O. Reg. 213/07): fire safety plans, system testing and inspections, enforced by municipal fire departments. ontario.ca/laws/regulation/070213
  • TSSA: elevators, boilers, and pressure equipment require registration and periodic inspections. tssa.org
  • Electrical Safety Authority (ESA): electrical safety standards and contractor permit requirements. esasafe.com
  • Condominium Act, 1998: reserve fund studies and board governance duties for condominium corporations. ontario.ca/laws/statute/98c19

How Rimkus Can Help

  • Voluntary building envelope condition assessments and facade evaluations
  • EWRB compliance support: energy audits and data verification for O. Reg. 506/18 reporting
  • OBC 3.2.7.9 emergency power system inspections and documentation
  • Restoration design services for deterioration identified during assessments

Frequently Asked Questions

Yes. Privately owned commercial, institutional, and multi-unit residential buildings (10+ units) of 50,000 sq. ft. (4,645 m²) or larger must report annually by July 1. Publicly owned buildings are exempt. Source: O. Reg. 506/18, ontario.ca/laws/regulation/180506.

July 1 each year, for the prior calendar year’s consumption data. For 2025 data the deadline is July 1, 2026. Reports are submitted via ENERGY STAR Portfolio Manager. Buildings that miss the deadline face administrative penalties under s. 25.35.8 of the Electricity Act, 1998, and non-compliance may be publicly disclosed. Source: O. Reg. 506/18 s. 7.

For buildings 100,000 sq. ft. (9,290 m²) or larger: in the first year of reporting, and every five years thereafter. Verification must be performed by a qualified professional holding one of the following credentials: P.Eng., Building Energy Technology Certificate, Building Operator Certification, Building Science Specialist of Ontario, Certified Energy Auditor, Certified Building Commissioning Professional, or Portfolio Manager certification. Source: O. Reg. 506/18 s. 10.

When a building exceeds 36 m (approximately 118 ft.) measured from grade to the floor level of the top story, not the roof. Applicable systems must be supplied with an EPS capable of not less than 2 hours full-load operation. Source: 2024 OBC 3.2.7.9.(1)(a) to (e); O. Reg. 163/24.

Every 10 years, per the Ontario Fire Code (O. Reg. 213/07), which governs ongoing testing and inspection of emergency power systems. Inspections must be carried out by a registered design professional in responsible charge. Inspection findings should be documented and records retained.

No. Ontario has no provincial law mandating periodic facade or structural inspections of existing buildings after a certificate of occupancy is issued. Building owners bear full responsibility for proactive maintenance. Source: Ontario Building Code Act, 1992; Elliot Lake Commission of Inquiry Report, October 2014.

Third, insurance: carriers may consider evidence of building condition and maintenance history when reviewing coverage at policy renewal.

Yes. Rimkus’ engineers and building science professionals perform voluntary building condition assessments, EWRB compliance support, OBC 3.2.7.9 emergency power system inspections, facade evaluations, and restoration design across Ontario. Our assessments follow ASTM E2270 standards and Canadian best practices. Mississauga office: +1-905-607-7244 | [email protected].

Need Help? Contact Rimkus

Ontario’s EWRB and OBC 3.2.7.9 requirements are active and enforced. Rimkus’ licensed engineers and building science professionals perform inspections, assessments, and compliance support across Ontario, helping building owners stay ahead of their obligations and protect their assets.

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