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Home Addition Services in Ottawa

Connect with experienced post-construction addition contractors for residential and commercial projects across Ottawa. From home extension and rough cleans to final detail cleaning, window restoration, and exterior pressure washing, we match you with the right pro.

Room Additions

Expand your Ottawa home with a professionally built room addition including foundation, framing, roof tie-in and full mechanical integration.

From $45,000 10-16 weeks
  • New foundation with frost-line footings (1.2-1.5m deep)
  • Structural framing and roof tie-in to existing home
  • HVAC ductwork extension and electrical panel assessment
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Second-Storey Additions

Add a full or partial second storey to your Ottawa home with structural engineering, foundation assessment and complete construction management.

From $150,000 16-28 weeks
  • Structural engineering assessment and load analysis
  • Foundation reinforcement or underpinning if required
  • Temporary roof removal and weather protection
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Bump-Out Extensions

Extend your Ottawa room by 2-15 feet with a bump-out addition including foundation, structural integration and exterior matching.

From $25,000 6-10 weeks
  • Foundation extension below 1.2-1.5m frost line
  • Structural wall opening and header installation
  • Roof overhang extension and exterior cladding match
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In-Law Suite Additions

Build a self-contained in-law suite addition in Ottawa with separate entrance, kitchen, bathroom and full fire separation per Ontario Building Code.

From $80,000 12-20 weeks
  • Self-contained unit with kitchen, bathroom and bedroom
  • Separate entrance and independent utility connections
  • Ontario Building Code fire separation compliance
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Sunroom Additions

Add a three-season or four-season sunroom to your Ottawa home with proper insulation, glass selection and heating for extreme winters.

From $30,000 6-12 weeks
  • Three-season or four-season design options
  • Triple-pane low-E glass for four-season rooms
  • Foundation with frost-line footings for permanent structures
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Garage Conversions

Convert your Ottawa garage to finished living space with insulation, HVAC, electrical upgrades and Ontario Building Code compliance.

From $35,000 8-14 weeks
  • Wall and ceiling insulation to OBC standards
  • Floor leveling and subfloor insulation system
  • HVAC ductwork extension or dedicated mini-split
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Kitchen Extensions

Expand your Ottawa kitchen with a rear or side extension including structural modifications, utility relocation and full finishing.

From $50,000 10-18 weeks
  • Load-bearing wall removal with engineered beam support
  • Foundation extension with frost-line footings
  • Plumbing and gas line relocation
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