Talk to a designer, contractor, engineer, or other qualified professional before committing to a concept when the project might change structure, add floor area, alter plumbing or ventilation, finish a basement, affect a shared wall, or sit in a heritage or zoning-sensitive context. The City’s requirements depend on the work and the property; the City of Ottawa building and renovating hub is a better starting point than a universal checklist.
Once the brief exists, use the Ottawa renovation cost guide to expose assumptions and the contractor hiring questions to compare conversations.