The bungalow-to-two-storey conversion has become one of Ottawa's most popular major renovation projects, and for good reason. Ottawa has thousands of 1950s–1970s bungalows sitting on premium lots in neighbourhoods like Alta Vista, Beacon Hill, Westboro, and Nepean. These homes occupy some of the most desirable land in the city, but their 1,000–1,400 square foot floor plans no longer meet modern family needs. Adding a second storey doubles your living space without expanding your home's footprin...
The total cost of converting an Ottawa bungalow to a two-storey home ranges from $200,000 to $500,000+ depending on the scope. Here's the detailed breakdown: **Structural Engineering & Design ($15,000–$35,000):** - Structural engineering assessment: $5,000–$10,000 - Architectural design and drawings: $8,000–$20,000 - Building permit fees: $2,000–$5,000 **Foundation Assessment & Reinforcement ($10,000–$50,000):** - Foundation assessment: $2,000–$5,000 - Foundation reinforcement (if needed): $10...
The fundamental question for any bungalow-to-two-storey conversion is whether the existing foundation and structure can support the additional load. Here's what a structural engineer evaluates: **Foundation Assessment:** - **Poured concrete foundations (most common 1960s–1970s):** Generally suitable with minor reinforcement. Can typically support a wood-frame second storey. - **Concrete block foundations (common 1950s–1960s):** May need reinforcement with carbon fibre straps ($200–$400 per stra...
Not every bungalow conversion needs a full second storey. Here are the main design approaches: **Full Second Storey ($250,000–$500,000):** - Removes existing roof entirely - Builds a complete second floor matching the bungalow's footprint - Adds 800–1,400 square feet of new living space - Typically includes 3–4 bedrooms and 1–2 bathrooms - Completely transforms the home's exterior appearance - Best for: Families needing maximum space **Partial Second Storey ($150,000–$300,000):** - Adds a seco...
**Permit Requirements:** A second-storey addition requires a full building permit from the City of Ottawa, including: - Architectural drawings (stamped by a licensed architect or engineer) - Structural engineering report - Site plan showing the modified building envelope - Energy efficiency calculations (Ontario Building Code compliance) - Demolition permit for the existing roof Permit processing time: 4–8 weeks for a typical second-storey addition. Total permit fees: $3,000–$8,000. **Typical ...
Before committing to a second-storey addition, compare all your options: **Second-Storey Addition:** - Cost: $200,000–$500,000 - Space gained: 800–1,400 sq ft - Timeline: 6–12 months - Disruption: High (must move out) - ROI: 60–80% **Rear Addition:** - Cost: $150,000–$350,000 - Space gained: 200–600 sq ft - Timeline: 3–6 months - Disruption: Moderate (can stay in home) - ROI: 50–70% **Demolition and Rebuild:** - Cost: $400,000–$800,000 - Space gained: Complete custom home - Timeline: 10–18 mo...
A full second-storey addition to an Ottawa bungalow costs $250,000–$500,000 in 2026. This includes structural engineering, foundation assessment/reinforcement, construction, new roof, HVAC extension, and interior finishing. A partial second storey ranges from $150,000–$300,000.
About 85% of Ottawa bungalow foundations can support a second storey with minor to moderate reinforcement ($5,000–$35,000). A structural engineering assessment ($5,000–$10,000) is required to determine your foundation's capacity before proceeding.
From design to completion, expect 6–12 months: 4–8 weeks for design, 4–8 weeks for permits, and 4–7 months for construction. The construction phase requires 4–7 months of alternative housing.
Yes, for most of the construction period (4–7 months). When the existing roof is removed, the home is exposed to weather. Budget $10,000–$30,000 for temporary housing and storage.
A second storey is better value per square foot — you gain 800–1,400 sq ft for $200,000–$500,000 ($175–$350/sq ft), while a rear addition adds 200–600 sq ft for $150,000–$350,000 ($400–$800/sq ft). The second storey also preserves your yard.