Our Building Permit Services

From single-room additions to full commercial developments, we handle every step of the permit process. Licensed P.Eng involvement on every application.

Residential Additions

Whether you're adding a second storey, expanding your main floor, or converting a garage into living space, a building permit is required in Ontario. We manage the entire process: zoning analysis, structural drawings, permit application, and inspection support.

Our licensed P.Eng team ensures your drawings meet the Ontario Building Code and your municipality's specific requirements — minimizing review rounds and getting your permit approved faster.

  • Second-storey additions and full rear additions
  • Garage and carport conversions to living space
  • Basement lowering (underpinning) permits
  • Accessory dwelling units (ADUs) and laneway suites
  • Sunrooms, enclosed porches, and four-season rooms
  • Side and rear extensions with heritage considerations
Get a Quote for Your Addition
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Residential Additions

New Home Construction

Building a new home in the GTA is one of the most significant investments you'll make. The permit process is complex: it involves zoning approvals, grading plans, structural engineering, energy efficiency compliance, and coordination with multiple city departments.

Ontario Permit manages every aspect of your new home permit application. We prepare stamped structural drawings, coordinate with your architect, and handle all city correspondence so your project starts construction on schedule.

  • Custom single-family and semi-detached homes
  • Infill and lot-severance developments
  • Structural engineering (foundation, framing, beam sizing)
  • Grading and drainage plan coordination
  • Energy efficiency and SB-12 compliance
  • Zoning bylaw and Committee of Adjustment review
Get a Quote for New Construction
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New Home Construction

Decks, Sheds & Outdoor Structures

Many homeowners are surprised to learn that most decks, detached garages, and large sheds require a building permit in Ontario. Even a deck attached to the house that is more than 600mm above grade requires a permit — and so do most above-ground pools.

We make the process easy. Our team prepares simple, clear drawings and submits your application quickly. For smaller projects, we typically have permit drawings ready within 2–3 business days.

  • Attached and detached decks over 600mm above grade
  • Detached garages and carports
  • Sheds over 15 m² (160 sq ft)
  • Above-ground and in-ground pools
  • Hot tubs and pergolas (where required)
  • Retaining walls over 1m in height
Get a Quote for Your Deck or Shed
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Decks & Outdoor Structures

Commercial & Industrial Projects

Commercial permit applications in Ontario involve navigating building codes, fire codes, zoning bylaws, site plan agreements, and accessibility requirements. A single missed item can add months to your timeline.

Our team has experience across a wide range of commercial project types throughout the GTA. We prepare engineer-stamped drawings, coordinate with fire prevention and planning departments, and track your application through every stage of the review process.

  • Retail fit-outs and tenant improvements
  • Restaurant and food-service renovations
  • Office and medical clinic build-outs
  • Change-of-use permits (occupancy reclassification)
  • Industrial and warehouse alterations
  • Mixed-use and multi-unit residential buildings
Get a Quote for Your Commercial Project
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Commercial Projects

Additional Permit & Engineering Services

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Basement Finishing

Permits for basement finishing, basement walkout additions, and underpinning projects. We handle egress window permits, plumbing rough-ins, and HVAC layouts.

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As-Built (Retroactive) Permits

Work was done without a permit? We can help legalize existing structures through retroactive permit applications — protecting your sale and your insurance coverage.

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Structural Engineering Letters

Engineer-stamped structural assessment letters for mortgage lenders, insurance companies, and real estate transactions. Issued by our licensed P.Eng.

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Interior Renovations

Permits for wall removals, load-bearing beam installations, bathroom additions, and kitchen renovations requiring plumbing or structural changes.

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Not Sure What You Need? Let's Talk.

Request a free quote and we'll assess your project, explain exactly what permits are required, and give you a transparent cost estimate.

Or call us: (416) 277-7712

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