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08/30/2026

Below-grade entrance framing requires coordinated design, structural support, and permit compliance under OBC 2024.

A compliant installation should address:
✓ Structural opening dimensions, lintels, beams, and temporary or permanent support
✓ Stair geometry, guards, handrails, landings, and safe access
✓ Drainage, grading, waterproofing, and foundation-wall interfaces
✓ Door and window requirements where applicable, including operation and protection
✓ Fire separation and egress considerations for basement living areas or dwelling units
✓ Required inspections before work is concealed
✓ Construction alignment with the approved architectural and engineering drawings

The framing, entrance details, and site work should be coordinated before construction proceeds. Clear permit documentation helps support accurate inspections and compliant ex*****on.

Planning a below-grade entrance in Toronto, Brampton, Mississauga, Milton, Kingston, or anywhere in Ontario? DM “CODE”.

KeyDraft Designs serves all over Ontario.
4372258713 | [email protected]

08/21/2026

KeyDraft Designs completed the architectural design, MEP engineering drawings, and commercial permit coordination for this Ocean Basket Fish & Chips restaurant project in Kingston, Ontario.

Project scope:
✓ Architectural design and layout planning
✓ Mechanical, electrical, and plumbing (MEP) drawings
✓ Commercial permit coordination and approval
✓ Planning for kitchen operations and customer circulation

Planning a restaurant, retail unit, or commercial renovation? Comment “COMMERCIAL” for professional design and permit guidance.

Serving all over Ontario.

Phone: 4372258713
Email: [email protected]

08/01/2026

𝗨𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴 𝗢𝗕𝗖 𝟮𝟬𝟮𝟰: 𝗦𝗲𝗰𝘁𝗶𝗼𝗻 𝟵.𝟭𝟬.𝟭𝟵 𝗥𝗲𝗾𝘂𝗶𝗿𝗲𝗺𝗲𝗻𝘁𝘀

Compliance with the 2024 Ontario Building Code (OBC) is essential for legal second suite conversions. Section 9.10.19 dictates specific life-safety standards for smoke and carbon monoxide alarms to ensure occupant safety across multi-unit dwellings.

𝗞𝗲𝘆 𝗦𝗽𝗲𝗰𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀:
- 𝗛𝗮𝗿𝗱𝘄𝗶𝗿𝗲𝗱 𝗖𝗼𝗻𝗻𝗲𝗰𝘁𝗶𝗼𝗻: Alarms must be hardwired to an electrical panel and equipped with battery backup.
- 𝗜𝗻𝘁𝗲𝗿𝗰𝗼𝗻𝗻𝗲𝗰𝘁𝗶𝘃𝗶𝘁𝘆: All alarms must be interconnected so that if one triggers, all sound simultaneously.
- 𝗣𝗹𝗮𝗰𝗲𝗺𝗲𝗻𝘁 𝗦𝘁𝗮𝗻𝗱𝗮𝗿𝗱𝘀: Alarms must be ceiling-mounted within 5m of any bedroom and within 15m of any point on every storey.
- 𝗖𝗼𝗺𝗽𝗹𝗶𝗮𝗻𝗰𝗲 𝗔𝗹𝘁𝗲𝗿𝗻𝗮𝘁𝗶𝘃𝗲 𝗖𝟭𝟳𝟮: Allows for battery-operated units only if AC power was not otherwise required for the space.
- 𝗖𝗢 𝗗𝗲𝘁𝗲𝗰𝘁𝗶𝗼𝗻: Hardwired, interconnected Carbon Monoxide detectors are mandatory where fuel-burning appliances or attached garages are present.

KeyDraft Designs provides technical precision for projects in Milton, Mississauga, Brampton, and all over Ontario. Serving all over Ontario.

DM "SMOKE" for expert guidance.

Phone: 4372258713
Email: [email protected]

07/31/2026

𝗨𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴 𝗢𝗕𝗖 𝟮𝟬𝟮𝟰: 𝗦𝘁𝗮𝗶𝗿, 𝗛𝗮𝗻𝗱𝗿𝗮𝗶𝗹 & 𝗚𝘂𝗮𝗿𝗱𝗿𝗮𝗶𝗹 𝗥𝗲𝗾𝘂𝗶𝗿𝗲𝗺𝗲𝗻𝘁𝘀

Compliance with Ontario Building Code 2024 (Sections 9.8.1 - 9.8.8) is essential for safety and permit approval. Here are the technical specifications for residential projects:

• 𝗦𝘁𝗮𝗶𝗿 𝗪𝗶𝗱𝘁𝗵: Minimum 860mm between stringers (900mm for exit stairs).
• 𝗛𝗲𝗮𝗱𝗿𝗼𝗼𝗺: Minimum 1950mm clearance measured vertically from the nozzle line.
• 𝗖𝘂𝗿𝘃𝗲𝗱 𝗦𝘁𝗮𝗶𝗿𝘀: Minimum average run of 200mm. Spiral stairs are not permitted in new construction.
• 𝗛𝗮𝗻𝗱𝗿𝗮𝗶𝗹𝘀: Required for stairs with more than 2 risers. Height must be between 800mm and 965mm.
• 𝗚𝘂𝗮𝗿𝗱𝗿𝗮𝗶𝗹𝘀: Minimum 900mm height for interior and 1070mm for exterior.
• 𝗣𝗶𝗰𝗸𝗲𝘁 𝗦𝗽𝗮𝗰𝗶𝗻𝗴: Maximum 100mm to prevent passage.

For renovations involving existing structures, compliance alternatives C107, C108, C111, and C112 provide specific exemptions for stairs and guards.

KeyDraft Designs provides expert architectural services in Milton, Mississauga, and Brampton. Serving all over Ontario.

DM "STAIRS" to discuss your next project.
Phone: 4372258713
Email: [email protected]

07/30/2026

𝗨𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴 𝗢𝗕𝗖 𝟮𝟬𝟮𝟰: 𝗦𝗲𝗰𝘁𝗶𝗼𝗻 𝟵.𝟱.𝟰 𝗥𝗲𝗾𝘂𝗶𝗿𝗲𝗺𝗲𝗻𝘁𝘀

Compliance with the 2024 Ontario Building Code is essential for the design and permitting of second suites. Section 9.5.4 outlines specific minimum area standards that must be met to ensure architectural precision and regulatory approval.

𝗞𝗲𝘆 𝗦𝗽𝗲𝗰𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 𝗳𝗼𝗿 𝗦𝗲𝗰𝗼𝗻𝗱 𝗦𝘂𝗶𝘁𝗲𝘀:
• Living Space (2+ Bedrooms): 13.5m² min.
• Living Space (1 Bedroom): 11.0m² min.
• Dining Space: 3.25m² (combined) or 7.0m² (separate).
• Kitchen (2+ Bedrooms): 4.2m² min.
• Master Bedroom: 6.0m² (with closets) or 7.0m² (without closets).
• Secondary Bedroom: 8.8m² (with closets).

Additionally, most municipal zoning bylaws in cities like Milton, Mississauga, and Brampton require a total minimum suite area of 37m².

KeyDraft Designs provides expert architectural drafting and engineering services to ensure your project is compliant from start to stamp. We serve clients in Milton, Mississauga, Brampton, and all over Ontario.

DM "ROOMS" for professional guidance on your next project.

📞 4372258713
📧 [email protected]

07/29/2026

𝗨𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴 𝗢𝗕𝗖 𝟮𝟬𝟮𝟰: 𝗙𝗶𝗿𝗲 𝗦𝗲𝗽𝗮𝗿𝗮𝘁𝗶𝗼𝗻 𝗯𝗲𝘁𝘄𝗲𝗲𝗻 𝗦𝘂𝗶𝘁𝗲𝘀

Section 9.10.9.14 of the Ontario Building Code outlines the technical requirements for fire separations to ensure safety and compliance in multi-family dwellings. Precision in these specifications is essential for permit approval and structural integrity.

𝗞𝗲𝘆 𝗥𝗲𝗾𝘂𝗶𝗿𝗲𝗺𝗲𝗻𝘁𝘀:
• A 45-minute fire-resistance rating is mandatory between dwelling suites.
• A 1-hour fire-resistance rating applies if either suite occupies more than one storey.
• 𝗖𝗼𝗺𝗽𝗹𝗶𝗮𝗻𝗰𝗲 𝗔𝗹𝘁𝗲𝗿𝗻𝗮𝘁𝗶𝘃𝗲 𝗖𝟭𝟰𝟵 permits a reduction to a 30-minute rating under specific conditions.

𝗢𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻 𝘃𝗶𝗮 𝗦𝗺𝗼𝗸𝗲 𝗔𝗹𝗮𝗿𝗺𝘀:
• Horizontal separations can be reduced to 15 minutes when interconnected hardwired smoke alarms are installed.
• Vertical separations can be waived with the implementation of these smoke alarms.

At KeyDraft Designs, we provide expert architectural guidance to navigate 𝗢𝗕𝗖 𝟮𝟬𝟮𝟰 standards flawlessly. Whether you are developing in 𝗠𝗶𝗹𝘁𝗼𝗻, 𝗠𝗶𝘀𝘀𝗶𝘀𝘀𝗮𝘂𝗴𝗮, or 𝗕𝗿𝗮𝗺𝗽𝘁𝗼𝗻, we ensure your project is compliant and professional. Serving all over Ontario.

DM "FIRESEP" to discuss your project.

Phone: 4372258713
Email: [email protected]

07/28/2026

𝗨𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴 𝗢𝗕𝗖 𝟮𝟬𝟮𝟰: 𝗥𝗼𝗼𝗺 𝗛𝗲𝗶𝗴𝗵𝘁 𝗦𝘁𝗮𝗻𝗱𝗮𝗿𝗱𝘀 𝗳𝗼𝗿 𝗦𝗲𝗰𝗼𝗻𝗱 𝗦𝘂𝗶𝘁𝗲𝘀

Section 9.5.3.1 of the 𝗢𝗻𝘁𝗮𝗿𝗶𝗼 𝗕𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝗖𝗼𝗱𝗲 𝟮𝟬𝟮𝟰 outlines specific ceiling height requirements for legal second dwellings. For projects in Milton, Mississauga, Brampton, and throughout Ontario, adherence to these technical specifications is essential for compliance and permit approval.

𝗞𝗲𝘆 𝗛𝗲𝗶𝗴𝗵𝘁 𝗦𝗽𝗲𝗰𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀:

• 𝗟𝗶𝘃𝗶𝗻𝗴/𝗗𝗶𝗻𝗶𝗻𝗴/𝗞𝗶𝘁𝗰𝗵𝗲𝗻: Minimum 2300mm over at least 75% of the required floor area.
• 𝗕𝗲𝗱𝗿𝗼𝗼𝗺𝘀: Minimum 2300mm over at least 50% of the required floor area.
• 𝗕𝗮𝘁𝗵𝗿𝗼𝗼𝗺𝘀/𝗟𝗮𝘂𝗻𝗱𝗿𝘆: Minimum 2100mm throughout the functional area.
• 𝗛𝗮𝗹𝗹𝘄𝗮𝘆𝘀: Minimum 2100mm.

𝗖𝗼𝗺𝗽𝗹𝗶𝗮𝗻𝗰𝗲 𝗔𝗹𝘁𝗲𝗿𝗻𝗮𝘁𝗶𝘃𝗲 𝗖𝟵𝟴:
When renovating existing spaces, OBC 2024 provides compliance alternative C98, allowing a reduced minimum height of 1950mm under specific conditions, such as under beams or ductwork.

KeyDraft Designs provides expert architectural drafting and engineering services ensuring your design meets all 2024 standards. We serve clients all over Ontario with technical precision.

DM "SUITE" to discuss your project.

Phone: 4372258713
Email: [email protected]

07/27/2026

𝗨𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴 𝗢𝗕𝗖 𝟮𝟬𝟮𝟰: 𝗧𝗲𝗺𝗽𝗲𝗿𝗲𝗱 𝗚𝗹𝗮𝘀𝘀 𝗥𝗲𝗾𝘂𝗶𝗿𝗲𝗺𝗲𝗻𝘁𝘀 (𝗦𝗲𝗰𝘁𝗶𝗼𝗻 𝗖𝟭𝟴𝟬)

Is your entrance door a safety hazard? The 𝗢𝗕𝗖 rules on glass specifications are precise regarding residential safety and occupant protection.

Under the 𝟮𝟬𝟮𝟰 𝘀𝘁𝗮𝗻𝗱𝗮𝗿𝗱𝘀, standard glass is prohibited in sidelights or entrance doors that could be mistaken for clear passage. Technical requirements include:

✔ 𝗦𝗮𝗳𝗲𝘁𝘆-𝗧𝘆𝗽𝗲 𝗚𝗹𝗮𝘀𝘀: Mandatory use of tempered or laminated safety glass for all entrance assemblies.
✔ 𝗣𝗲𝗿𝗺𝗮𝗻𝗲𝗻𝘁 𝗜𝗱𝗲𝗻𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻: Every pane must be visibly marked to confirm its safety rating.
✔ 𝗖𝟭𝟴𝟬 𝗖𝗼𝗺𝗽𝗹𝗶𝗮𝗻𝗰𝗲: Ensuring structural integrity and impact resistance.

Ensuring these specifications are clear on your architectural drawings prevents inspection failures and ensures project accuracy. At 𝗞𝗲𝘆𝗗𝗿𝗮𝗳𝘁 𝗗𝗲𝘀𝗶𝗴𝗻𝘀, we provide technical precision to ensure every project is compliant from start to stamp.

Serving all over 𝗢𝗻𝘁𝗮𝗿𝗶𝗼.

DM "CODE" to ensure your entry is compliant.

📞 𝟰𝟯𝟳𝟮𝟮𝟱𝟴𝟳𝟭𝟯
📧 𝗰𝗼𝗻𝘁𝗮𝗰𝘁@𝗸𝗲𝘆𝗱𝗿𝗮𝗳𝘁𝗱𝗲𝘀𝗶𝗴𝗻𝘀.𝗰𝗼𝗺

07/25/2026

𝗨𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴 𝗢𝗕𝗖 𝟮𝟬𝟮𝟰: 𝗦𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗮𝗹 𝗔𝗹𝘁𝗲𝗿𝗮𝘁𝗶𝗼𝗻𝘀

Opening up your floor plan? Your structural integrity depends on more than just a beam.

Removing a wall without a structural assessment can lead to floor sagging or roof failure, often causing significant permit delays. Under OBC 2024 Part 9/11, any structural alteration to floors or walls must be assessed and stamped by a Professional Engineer (reference C145).

KeyDraft Designs provides technical precision and code-compliant solutions for:
✅ Load-bearing wall removal specifications
✅ Engineered beam and column design
✅ Structural integrity assessments
✅ Permit drawings and engineering stamps

Our approach ensures your project meets the latest 2024 standards while maintaining the aesthetic flow of your space. We provide the technical accuracy required for a flawless approval process.

Serving all over Ontario.

DM "CODE" for a structural consultation.

📞 4372258713
📧 [email protected]

Address

38 SEDGEWICK Circle
Toronto, ON
L7A2P7

Telephone

+14372258713

Website

https://keydraftdesigns.com/

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