Service category
ADU & Basement Suites
Legal basement apartments, garden suites & laneway ADUs. ProsFix connects Ontario homeowners with independent aDU & basement suites professionals who already service your neighbourhood. From quick fixes to full projects, compare local availability, review typical Ontario pricing, and request a free quote without calling around.
- Matched with verified local aDU & basement suites pros in your area
- See typical Ontario pricing ranges before you book
- Free, no-obligation quotes from independent professionals
- Licensed, insured providers — not call-centre dispatchers
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Tell us about the job and we'll route it to independent pros in your area. Free, no obligation.
3 services in ADU & Basement Suites
Price ranges are typical Ontario planning ranges. Your quote comes from the professional.
Basement Legal Suite ConversionConvert your basement into a code-compliant legal secondary dwelling unit.$65,000 – $140,000 per suite
Garden Suite (Detached ADU)Detached backyard dwelling unit - full permit, engineering, and turnkey build.$220,000 – $420,000 per suite
Laneway HouseTwo-storey laneway ADU on lots backing onto a public laneway.$300,000 – $550,000 per house
Methodology: Ranges are compiled from Ontario market data for planning only, exclude taxes and permits, and are reviewed as we verify pricing. They are not quotes and not binding on any provider.
Local coverage
Cities where we publish local pages for this category.
- ajax
- aurora
- barrie
- belleville
- bolton
- bowmanville
- brampton
- brantford
- brockville
- burlington
- caledon
- cambridge
- chatham
- cobourg
- collingwood
- cornwall
- fort erie
- georgina
- greater sudbury
- grimsby
- guelph
- halton hills
- hamilton
- innisfil
- kawartha lakes
- kenora
- kingston
- kitchener
- leamington
- london
- markham
- midland
- milton
- mississauga
- newcastle
- newmarket
- niagara falls
- north bay
- oakville
- orangeville
- orillia
- oshawa
- ottawa
- owen sound
- peterborough
- pickering
- port colborne
- quinte west
- richmond hill
- sarnia
- sault ste marie
- st catharines
- st thomas
- stratford
- tecumseh
- thorold
- thunder bay
- tillsonburg
- timmins
- toronto
- vaughan
- waterloo
- welland
- whitby
- windsor
- woodstock
Category FAQ
- How much do adu & basement suites jobs cost in Ontario?
- Ranges vary by scope, access, materials and season. The ranges on each service page are typical Ontario planning ranges, not quotes.
- Do I need permits or a licensed trade for this work?
- Requirements depend on the specific job and your municipality. Confirm with your city and the professional before work begins.
- Who performs the work?
- ProsFix is a connection platform. Independent service professionals perform the work. Licences, insurance, warranties, response times and reviews belong to the named provider that earned them.
ProsFix is a connection platform. Independent service professionals perform the work. Licences, insurance, warranties, response times and reviews belong to the named provider that earned them.
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