Detached ADU in Halton Hills - Design, Permits, Construction

Halton Hills is really two serviced towns - Georgetown and Acton - inside a large rural township. The address decides the project: inside the urban boundary a garden suite ties into municipal water and sewer, while a Glen Williams or Limehouse property needs a well yield test and septic design before a single line is drawn. Halton Hills permits additional residential units; Georgetown and Acton have municipal servicing while the rural balance is on private septic with NEC overlay in the west.

Two serviced towns (Georgetown, Acton) surrounded by rural escarpment acreage - feasibility swings entirely on which side of the servicing boundary the address falls.

A detached unit stands clear of the main house, so it carries its own foundation, its own service laterals and its own exit - the three cost centres that separate it from an interior conversion on the same Halton Hills lot. We trench services across the yard and pour to 1.2 m before the ground closes; framing, envelope and interior finishing then run through the cold months without holding up occupancy. Detached is the highest per-square-foot form of the four, and also the only one that leaves the existing house untouched - no shared walls, no disruption to the occupants during construction.