# Ontario Garden Suites and Laneway Houses: Bill 23 Rules, Costs & What to Expect in 2026 **URL:** \ **Category:** Ontario\ **Created:** [April 26, 2026, 6:30pm UTC](https://home.renovation.reviews/t/ontario-garden-suites-and-laneway-houses-bill-23-rules-costs-what-to-expect-in-2026/46869 "2026-04-26T18:30:15Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![system](https://home.renovation.reviews/user_avatar/home.renovation.reviews/system/32/77_2.png) [@system](https://home.renovation.reviews/u/system)\ **Post date:** [April 26, 2026, 6:30pm UTC](https://home.renovation.reviews/t/ontario-garden-suites-and-laneway-houses-bill-23-rules-costs-what-to-expect-in-2026/46869/1 "2026-04-26T18:30:15Z")
Bill 23 (2022) transformed the ADU landscape in Ontario, requiring municipalities to permit garden suites province-wide. Here is the current picture for 2026. **Garden Suite vs Laneway House** Garden suite: Detached accessory dwelling in rear or side yard. Permitted province-wide under Bill 23, overriding local restrictions. Laneway house: Detached unit fronting a rear laneway. Most common in Toronto’s older grid neighbourhoods. Requires rear laneway access. **Toronto Rules Post-Bill 23** Lots under 200 sq m: up to 60 sq m. Larger lots: up to 78 sq m. Setbacks: 1.5m from rear and side lines. Height: up to 4m (single storey) or 6m (two storey). Other Ontario municipalities have their own rules within Bill 23 parameters — check locally. **Costs in Ontario 2026** Prefabricated modular (supply and install): $180,000-$350,000. Custom-built: $250,000-$500,000+. Key variables: utility connections, foundation type, site access, municipal development charges. **Rental Income** GTA 1-bedroom garden suite: $1,800-$2,800/month. Strong rental demand in Toronto, Mississauga, and Brampton makes garden suites financially viable. Discuss garden suite design, permits, and contractor experiences at home.renovation.reviews.