{"name":"BuildRules permit index: Markham","canonical_url":"https://buildrules.ca/permit-index/markham","generated_at":"2026-10-07T08:25:38.171Z","latest_verified":"2026-10-01","coverage":{"cities":1,"project_types":9,"city_project_answers":9,"official_source_urls":3},"methodology_url":"https://buildrules.ca/methodology","source_directory_url":"https://buildrules.ca/sources","records":[{"city":"Markham","city_slug":"markham","province":"Ontario","project":"Basement renovation","project_slug":"basement-renovation-permit","question":"Do you need a permit for basement renovation work in Markham?","guidance_status":"Depends on project conditions","direct_answer":"Markham lists construction of separate basement rooms, full-basement alterations, structural changes and new plumbing among permit-required work.","last_verified":"2026-10-01","official_source_count":1,"official_source_urls":["https://www.markham.ca/economic-development-business/building-permits/building-permit-process"],"buildrules_url":"https://buildrules.ca/markham/basement-renovation-permit"},{"city":"Markham","city_slug":"markham","province":"Ontario","project":"Deck","project_slug":"deck-permit","question":"Do you need a permit for a deck in Markham?","guidance_status":"Depends on project conditions","direct_answer":"Markham lists raised decks more than 600 mm above grade as permit-required and lists low decks under 600 mm as permit-exempt.","last_verified":"2026-10-01","official_source_count":1,"official_source_urls":["https://www.markham.ca/economic-development-business/building-permits/building-permit-process"],"buildrules_url":"https://buildrules.ca/markham/deck-permit"},{"city":"Markham","city_slug":"markham","province":"Ontario","project":"Garage / carport","project_slug":"garage-permit","question":"Do you need a permit for a garage or carport in Markham?","guidance_status":"Depends on project conditions","direct_answer":"Yes. Markham states that detached and attached garages and carports are included in construction work requiring a building permit.","last_verified":"2026-10-01","official_source_count":3,"official_source_urls":["https://www.markham.ca/economic-development-business/building-permits/guide-building-permits","https://www.markham.ca/about-city-markham/city-hall/bylaw/decks-construction-permits","https://www.markham.ca/economic-development-business/building-permits/building-permit-process"],"buildrules_url":"https://buildrules.ca/markham/garage-permit"},{"city":"Markham","city_slug":"markham","province":"Ontario","project":"Home addition","project_slug":"home-addition-permit","question":"Do you need a permit for a home addition in Markham?","guidance_status":"Depends on project conditions","direct_answer":"Yes. Markham’s building guidance states that additions and most construction work require a building permit.","last_verified":"2026-10-01","official_source_count":2,"official_source_urls":["https://www.markham.ca/economic-development-business/building-permits/building-permit-process","https://www.markham.ca/economic-development-business/building-permits/guide-building-permits"],"buildrules_url":"https://buildrules.ca/markham/home-addition-permit"},{"city":"Markham","city_slug":"markham","province":"Ontario","project":"Retaining wall","project_slug":"retaining-wall-permit","question":"Do you need a permit for a retaining wall in Markham?","guidance_status":"Depends on project conditions","direct_answer":"Markham lists retaining walls less than one metre high among housing projects that do not require a building permit.","last_verified":"2026-10-01","official_source_count":1,"official_source_urls":["https://www.markham.ca/economic-development-business/building-permits/building-permit-process"],"buildrules_url":"https://buildrules.ca/markham/retaining-wall-permit"},{"city":"Markham","city_slug":"markham","province":"Ontario","project":"Roof replacement","project_slug":"roof-replacement-permit","question":"Do you need a permit to replace roofing or shingles in Markham?","guidance_status":"Depends on project conditions","direct_answer":"Markham lists replacing roofing or shingles among housing projects that do not require a building permit.","last_verified":"2026-10-01","official_source_count":1,"official_source_urls":["https://www.markham.ca/economic-development-business/building-permits/building-permit-process"],"buildrules_url":"https://buildrules.ca/markham/roof-replacement-permit"},{"city":"Markham","city_slug":"markham","province":"Ontario","project":"Secondary suite","project_slug":"secondary-suite-permit","question":"What do you need for a secondary suite in Markham?","guidance_status":"Depends on project conditions","direct_answer":"Markham provides a dedicated secondary-suite process covering eligibility, the building permit application and registration with Markham Fire and Emergency Services.","last_verified":"2026-10-01","official_source_count":1,"official_source_urls":["https://www.markham.ca/economic-development-business/building-permits/guide-building-permits"],"buildrules_url":"https://buildrules.ca/markham/secondary-suite-permit"},{"city":"Markham","city_slug":"markham","province":"Ontario","project":"Shed / accessory structure","project_slug":"shed-permit","question":"Do you need a permit for a shed in Markham?","guidance_status":"Depends on project conditions","direct_answer":"A detached single-storey accessory building without plumbing can be permit-exempt when it is less than 15 m².","last_verified":"2026-10-01","official_source_count":1,"official_source_urls":["https://www.markham.ca/economic-development-business/building-permits/building-permit-process"],"buildrules_url":"https://buildrules.ca/markham/shed-permit"},{"city":"Markham","city_slug":"markham","province":"Ontario","project":"Solar panels","project_slug":"solar-panel-permit","question":"Do you need a building permit for solar photovoltaic panels in Markham?","guidance_status":"Depends on project conditions","direct_answer":"Markham lists ground- or roof-mounted solar photovoltaic panels among housing projects that do not require a building permit.","last_verified":"2026-10-01","official_source_count":1,"official_source_urls":["https://www.markham.ca/economic-development-business/building-permits/building-permit-process"],"buildrules_url":"https://buildrules.ca/markham/solar-panel-permit"}]}