Can I convert a half bath to a full bath in my Ottawa home?

Yes, you can typically convert a half bath to a full bath in your Ottawa home, but success depends on available space, plumbing access, and structural considerations. The most critical factor is whether you have enough room - a full bathroom needs minimum 5 feet by 8 feet, though 6 feet by 9 feet is more comfortable.

Space and Layout Requirements

Converting a half bath means adding a bathtub or shower, which requires significantly more floor space than just a toilet and sink. In Ottawa's older homes (pre-1960s), powder rooms were often built quite small, sometimes as little as 3 feet by 5 feet. You'll need to evaluate whether you can expand into adjacent space - perhaps borrowing from a hallway, closet, or bedroom. If expansion isn't possible, a compact corner shower unit might fit in some half baths, though it will be tight.

Plumbing and Structural Considerations

The existing plumbing rough-in is your next major consideration. Half baths typically have 2-inch drain lines, but a full bath with a tub requires a 3-inch main drain. You'll also need hot water supply lines if they don't already extend to that location. In Ottawa's older homes, this often means opening walls and potentially floors to run new plumbing. The floor structure must also support the additional weight of a filled bathtub - typically 1,000+ pounds when full.

Ottawa Building Code and Permits

Any plumbing modifications require permits through the City of Ottawa Building Code Services. The work must comply with the Ontario Building Code, including proper venting for the new fixtures and adequate ceiling height (minimum 6 feet 8 inches). If you're adding square footage by expanding the room, you'll need a building permit. Plumbing work must be done by licensed plumbers, and all work requires inspection before closing walls.

Professional Guidance and Timeline

While you might handle demolition and finishing work yourself, the plumbing modifications require professional installation. Licensed plumbers must install new drain lines, supply lines, and ensure proper venting. Electrical work for additional lighting, ventilation fan, or GFCI outlets must be done by licensed electricians and inspected by ESA (Electrical Safety Authority).

Next Steps

Start by measuring your existing half bath and adjacent spaces to determine if expansion is feasible. Consider consulting with a renovation contractor who can assess the plumbing access and structural requirements. For a comprehensive evaluation of your conversion options and a free estimate, contact Justyn Rook Contracting - we regularly handle these types of bathroom expansions in Ottawa homes and can guide you through the permit process.