Chemainus has both the oldest housing and the oldest population of anywhere in this service area, and the two together decide most of what a bathroom renovation here involves. More than a quarter of the town's occupied dwellings were built in 1960 or earlier — that pre-1960 band is the single largest era in town, bigger than any decade that followed it — and close to half predate 1981. The median age is in the low sixties, and more than four residents in ten are 65 or over. The result is a steady demand for bathrooms built before the current code existed to be rebuilt for people who intend to stay in the house.
The murals went up in the early 1980s, after the mill was rebuilt with far fewer workers than it had employed before. But Chemainus is not static. The population grew by nearly twelve per cent between 2016 and 2021, and the 2016–2021 building cohort is the second largest in town after the pre-1960 one. A little over half the dwellings are single-detached — a lower share than the neighbouring communities — with a substantial low-rise apartment and strata component alongside them.
Servicing is decided by a line on a map. North Cowichan's urban containment boundary is the practical divide: inside it, properties are generally on municipal water and sewer; outside it, on a private well and a septic system. That distinction matters more than it sounds, because adding a fixture on a serviced property is a plumbing question, whereas adding one on a septic property is a question about the system's capacity first. Where the septic system itself has to be altered, that is filed separately with Island Health by an authorised person under the provincial sewerage regulation, alongside rather than inside the building permit. Permits are coordinated where the scope requires them, and the work is built to BC Building Code.
Working in stock this old has consequences that surface at demolition rather than at the quote. The recurring finds are the ones any pre-code bathroom offers: water damage at the base of a tub or shower wall, subfloor softened around a slowly leaking toilet flange, exhaust ducting that stops in the attic, and plumbing altered at some point without a permit. Nearly one dwelling in ten in Chemainus is manufactured, which brings its own constraints again. Every project starts with the room itself — its era, what is behind the walls, and what the drainage will allow. Scope is itemised in writing and set out in a written contract. Other renovation work is available on request.