Best Basement Development Company in Calgary – Onyx Basements

Author : Onyx Basements | Published On : 18 Feb 2026

If you’re searching for the best basement development company in Calgary, you’re likely looking for more than just drywall and flooring—you want a legal, income‑generating suite that adds real value to your home. Onyx Basements has built its reputation on turning underused basements into high‑quality, code‑compliant basement suites that work for families, renters, and investors alike.

Onyx Basements handles every stage of the project, from initial design and city permits to plumbing, electrical, insulation, drywall, flooring, and full kitchen and bathroom installation. Their team focuses on smart layouts, premium materials, and strict adherence to Calgary’s secondary‑suite bylaws, so your suite is not only beautiful but also fully legal and rent‑ready.

A professionally developed basement suite can significantly boost your property’s rental income and resale value. Whether you’re housing family members, renting to tenants, or creating a guest suite, Onyx Basements tailors each project to your goals, balancing functionality, comfort, and long‑term return on investment.