Toronto Home Renovation Index

Best Basement Renovation Companies in Toronto & the GTA

Finishing, legal second units and underpinning. The top 10 across every city we cover.

Checked November 14, 2026

  1. 1

    Amar Royal Renovations GTA

    80 Barleyfield Rd, Brampton, ON L6R 2J1

    Home RenovationBasement Renovation

    Google reviews

    96/100

    5.0 on Google, 136 reviews

  2. 2

    Sky Home Renovation Ltd.

    10 Haslemere Ave, Brampton, ON L6Y 4S7

    Home RenovationBasement Renovation

    Google reviews

    93/100

    4.9 on Google, 172 reviews

  3. 3

    The Foundation Kings Ltd.

    34 Minowan Miikan Ln, Toronto, ON M6J 0G3

    Basement Renovation

    Google reviews

    93/100

    5.0 on Google, 95 reviews

  4. 4

    Elevate Home Renovation Toronto

    2300 Yonge St, Toronto, ON M4P 1E4

    Kitchen RenovationBathroom RenovationBasement Renovation

    Google reviews

    87/100

    5.0 on Google, 49 reviews

  5. 5

    Next Level Construction and Renovations

    5250 Solar Dr Unit 4, Mississauga, ON L4W 5M8

    Home RenovationBasement Renovation

    Google reviews

    85/100

    5.0 on Google, 44 reviews

  6. 6

    Harmony Basements

    156 Chrislea Rd #4, Woodbridge, ON L4L 8V1

    Basement Renovation

    Google reviews

    80/100

    4.7 on Google, 89 reviews

  7. 7

    My Legal Basement Ltd

    1510 Drew Rd Unit 9, Mississauga, ON L5S 1W7

    Basement Renovation

    Google reviews

    77/100

    4.6 on Google, 109 reviews

  8. 8

    FinishedBasement.ca

    290 Traders Blvd E #9, Mississauga, ON L4Z 1W7

    Basement Renovation

    Google reviews

    76/100

    4.7 on Google, 59 reviews

  9. 9

    Assured Basements

    1111 Finch Ave W Unit 5, North York, ON M3J 2E5

    Basement Renovation

    Google reviews

    75/100

    4.5 on Google, 164 reviews

  10. 10

    Basement Finishing Company

    219 Connie Crescent Unit 11a, Concord, ON L4K 2H3

    Basement Renovation

    Google reviews

    72/100

    4.6 on Google, 58 reviews